Japan’s 3 Mega Banks Compared MUFG SMBC Mizuho Which Is Right for You?
Drawing on 100+ authoritative sources and the latest data, we compare all three mega banks across 8 dimensions. Whether you’re a student, a foreign full-time employee, a Rakuten ecosystem user, an SBI Securities devotee, or planning a move to the U.S., you’ll find the bank that fits you best — plus the strongest “two-bank combo” strategy. Includes a hands-on look at Olive Infinite (live since May 26; SBI Securities credit-card investing up to 6%) and Mizuho’s investment in Rakuten Bank (October financial restructuring).
📌 The One-Minute Verdict
Each mega bank has a clear identity. There’s no “best” — only “best for you”:
- MUFG — the most international, with the most complete five-language support, exclusive U.S. Bank account referral, and an edge in large overseas transfers → best for people who need Chinese/Vietnamese support, those moving to the U.S., and anyone receiving large overseas transfers
- SMBC + Olive — the most digital, with Olive’s 4-in-1 card, up to 20% back at partner merchants, and SBI Securities integration; Olive Infinite went live on May 26, 2026 (SBI Securities credit-card investing up to 6% = normally up to 4% plus up to a further +2%; the first Visa Infinite in Japan) → best for digital-first users, heavy points collectors, SBI Securities users, and high-net-worth users
- Mizuho — the most Rakuten-aligned, with the Mizuho Rakuten Card’s W-point plan at an effective ~2%, deep Rakuten Securities integration, and account opening for full-time employees within their first 6 months → best for Rakuten ecosystem users and newly arrived full-time employees
- Key timeline of changes — On February 2, all three banks raised the ordinary savings rate from 0.2% to 0.3% (a 33-year high); on February 15, Mizuho greatly simplified its Mileage Club; on May 26, Olive Infinite went live; on October 1, Mizuho’s investment in Rakuten Bank (10.52% voting rights) completes the financial restructuring; and MUFG’s new digital bank opens later this year
🔍 The Three Mega Banks at a Glance
- Biggest strength / what sets it apart
- MUFG = the most international (40+ countries, 5 languages) | SMBC = the most digital (6M+ Olive users) | Mizuho = the most Rakuten-aligned (Mizuho Securities holds 49% of Rakuten Securities)
- Ordinary savings rate (now uniform)
- All three at a uniform 0.30% since February 2, 2026 (a roughly 33-year high for MUFG and others)
- Fastest account opening for foreigners
- SMBC Olive app (account number in as little as ~1 hour) | Mizuho app (open to foreigners) | MUFG requires a branch counter or video teller
- Highest rewards at partner merchants
- MUFG 20% (covers some supermarkets) | SMBC Olive 20% (focused on convenience stores/dining) | Mizuho via Rakuten Ichiba SPU stacking
- Highest credit-card investing rewards
- SMBC up to 6% (normally up to 4% plus up to a further +2% via asset management; Olive Infinite) | Mizuho effective ~2% (W-points) | MUFG 0.5-1%
- Multilingual support (app/online)
- MUFG = 5 languages (English, Simplified/Traditional Chinese, Korean, Vietnamese) | SMBC = mainly English | Mizuho = mainly Japanese and English
- SWIFT codes
- MUFG: BOTKJPJT | SMBC: SMBCJPJT | Mizuho: MHCBJPJT
- Last updated
- May 30, 2026
In the first three parts we took a deep dive into MUFG, SMBC Olive, and Mizuho — their distinctive features and how to get the most out of each. But if you’re living in Japan, you’re probably still asking: “So which one should actually be my primary bank?” This finale answers that head-on. We compare all three across 8 core dimensions, give precise recommendations for 7 typical user profiles, and finish with a “two-bank combo” strategy that lets you squeeze out every last benefit. The past year has been a pivotal stretch for Japan’s mega banks: after the Bank of Japan’s rate hike, all three raised their ordinary savings rate to 0.3% in February — a 33-year high; Mizuho greatly simplified its Mileage Club; Olive’s top-tier card, Olive Infinite, went live on May 26; Mizuho confirmed an investment in Rakuten Bank (financial restructuring completing October 1); MUFG’s “emoot” brand launched in June 2025 with a new digital bank due later this year — and we cover all of it below.
- Latest data: based on 100+ authoritative sources (official PDFs and reporting from Nikkei, Bloomberg, nikkin, watch.impress, etc.), updated May 30, 2026
- Ordinary savings rate: all three banks at a uniform 0.30% since February 2, 2026 (a roughly 33-year high for MUFG and others)
- Account-opening friendliness: Mizuho ≈ SMBC Olive > MUFG (Mizuho is the friendliest to full-time employees in their first 6 months)
- Multilingual support: MUFG wins outright (5 languages); the other two are mainly English
- ATM network: Mizuho has the widest coverage (partner Aeon Bank network of 6,000+ ATMs)
- Overseas transfers: MUFG is strongest (free foreign-to-foreign-account transfers; exclusive U.S. Bank referral)
- Credit-card rewards: both SMBC Olive and the MUFG card cap at 20%, but the qualifying conditions differ
- Investment integration: SMBC x SBI (Olive Infinite credit-card investing up to 6% — now live — the strongest) | Mizuho x Rakuten (no annual fee, ~2%, the best value) | MUFG x e-Smart (fully in-group)
- Latest-developments timeline: covers 12 key milestones (including the May 26 Olive Infinite launch and Mizuho’s October 1 investment in Rakuten Bank)
- Precise recommendations for 7 user profiles + 3 strongest two-bank combo strategies
Table of Contents
- The Three Mega Banks: Core Identities
- Dimension 1: Account Opening for Foreigners
- Dimension 2: Multilingual Support
- Dimension 3: ATM Network & Fees
- Dimension 4: Overseas Transfers
- Dimension 5: Credit-Card Rewards & Partner Merchants
- Dimension 6: Investment Integration
- Dimension 7: Digital Experience
- Dimension 8: Latest-Developments Timeline
- Recommendations for 7 User Profiles
- The Strongest 2-3 Bank Combos
- The Final Call — Decision Card
- Overall Scorecard
- FAQ — Common Real-World Questions
- Conclusion: You’re Ready
1. The Three Mega Banks: Core Identities
Before the 8-dimension deep dive, let’s understand each bank’s core strategic identity — this is what makes it appeal to different people.
MUFG Bank
Mitsubishi UFJ Financial GroupIdentity: a global-scale player in deep alliance with Morgan Stanley. The largest of the three, with a high share of overseas earnings (about half), a network across 40+ countries, and the most all-round five-language support.
Signature strengths: the U.S. Bank account referral service (open a U.S. account from within Japan before you move; started July 20, 2023), the widest overseas network, the new “emoot” brand (operating since June 2025), a new digital bank opening in the second half of fiscal 2026, and integration with WealthNavi.
Sumitomo Mitsui Banking + Olive
Sumitomo Mitsui Banking Corp.Identity: an efficiency-driven player reshaping the future of digital finance through Olive. Olive accounts have topped 6 million contracts, with the highest share of users in their 20s and 30s and a push into Asian markets (India and others).
Signature strengths: the Olive Flexible Pay 4-in-1 multifunction card, up to 20% back at partner merchants, deep SBI Securities integration, and Olive Infinite (live since May 26, 2026) (99,000 yen/year; the first Visa Infinite in Japan; SBI Securities credit-card investing up to 6%).
Mizuho Bank
Mizuho Bank, Ltd.Identity: a corporate-focused player rebuilding its IT foundation and partnering with Rakuten. Formed from the merger of three predecessor banks, with roughly 24 million personal accounts, a high share of listed-company dealings, and heavy IT investment.
Signature strengths: Mizuho Securities’ 49% stake in Rakuten Securities, the Mizuho Rakuten Card’s W-point plan at an effective ~2%, a partnership covering 6,000+ Aeon Bank ATMs, and a major simplification of the Mileage Club in February 2026 (unified into a single S stage). Note: Mizuho Financial Group has confirmed it will invest in Rakuten Bank (10.52% voting rights, completing October 1) and will divest its Rakuten Card holding (see the timeline).
2. Dimension 1: Account Opening for Foreigners
For foreigners, the difficulty, speed, and required documents for opening an account are the first thing to weigh — and the three banks differ enormously.
| Item | MUFGMUFG | SMBC OliveSMBC | MizuhoMizuho |
|---|---|---|---|
| Can open within 6 months of entry? | Generally no narrow exceptions |
Generally no some flexibility |
👑Yes full-time + certificate of employment |
| In-app opening for foreigners | No branch or video teller only |
👑Yes residence card-based |
Yes dedicated opening app |
| Fastest opening time | 1-2 hrs same day at counter + card mailed in ~1-2 weeks |
👑account number in ~1 hr + card mailed in ~1-2 weeks |
same day at the earliest + card mailed in ~1-2 weeks |
| Personal seal (hanko) required? | Required (no Shachihata) | Not required (in-app) | Not required (in-app) |
| Remaining residence period required | generally a set minimum | generally a set minimum | generally a set minimum |
| In-branch language support | 👑most complete Chinese/Vietnamese at some branches |
mainly English Chinese at some central branches |
mainly English opening guide in 5 languages |
Japanese banks generally require foreigners to have been in Japan for 6 months before opening an account, to satisfy the residency test under the Act on Prevention of Transfer of Criminal Proceeds. But this is a guideline, not an absolute — Mizuho explicitly opens an exception for full-time employees (with a staff ID or certificate of employment), making it the easiest mega bank for newly arrived workers. If you haven’t yet hit 6 months and aren’t a full-time employee, you can use Japan Post Bank (Yucho) (a lower bar to open) as a stopgap, then open a mega bank account once you reach 6 months.
Mizuho Bank
Its biggest advantage: if you’ve been in Japan under 6 months, you can still apply as long as you’re working as a full-time employee at a Japanese company — just submit a staff ID or certificate of employment. That makes it the top choice for newly arrived work-visa holders. In-app opening is available to foreigners, and no personal seal is needed.
SMBC Olive
An account number in as little as an hour, in-app opening for foreigners, and no seal required. The 6-month rule applies in principle, but there’s some flexibility in certain cases. The top pick for digital-first users who want the fastest opening.
MUFG
You must apply at a branch or via a video teller — no app — so it’s the most cumbersome to open, but it has the most complete in-branch language support (Chinese- and Vietnamese-speaking staff at some branches). Still a solid choice if you need Chinese support.
3. Dimension 2: Multilingual Support
This is one of the dimensions where the three mega banks differ most. Based on the actual state of support as of May 2026:
| Item | MUFG | SMBC Olive | Mizuho |
|---|---|---|---|
| Website languages | 👑5 EN, Simplified/Traditional ZH, KO, VI |
mainly English | mainly English |
| Online banking support | 5 (via WOVN.io) | mainly English | mainly Japanese & English |
| App support | 5 | English in progress | mainly Japanese & English |
| Account-opening documents | 5 languages | English + some other languages | 5-language PDF (strong at the opening stage) |
| Residence-status renewal reminders | multilingual (ZH, KO, VI, PT, etc.) | mainly Japanese & English | mainly Japanese & English |
| Chinese/Vietnamese staff in-branch | at some branches | some central branches | limited |
Via WOVN.io, MUFG has offered complete five-language support across its website and online banking since February 2020 — something unique among the three mega banks. If you have a Chinese, Taiwanese, Korean, or Vietnamese background, MUFG should be your first choice.
SMBC is rolling out multilingual support for Olive, but it’s currently mainly English, with Asian-language support still being built out. Mizuho’s app is mainly Japanese and English, so its multilingual support is relatively weak — though the five-language PDF for account opening is fairly thorough.
4. Dimension 3: ATM Network & Fees
If you use ATMs every day, the real-world reach of the fee-free network matters a lot.
| Item | MUFG | SMBC Olive | Mizuho |
|---|---|---|---|
| Own ATM scale | about 1,400+ | about 1,400 | about 1,400 + 6,000+ Aeon partner ATMs |
| Domestic branches | about 420 | about 450 | about 460 |
| Own ATM free (baseline) | free during set hours, weekdays/weekends/holidays | Olive account → own ATMs free 24/7, always | free during set hours on weekdays |
| Free convenience-store ATM uses (when conditions met) | membership tier → a few times/month | chosen perk → a few times/month | new S stage: 3 free/month |
| Other/partner ATM integration | SMBC off-branch ATMs free during set hours | MUFG off-branch ATMs free | all 6,000+ Aeon Bank ATMs at the same terms |
| Regional coverage | ★★★★ | ★★★★ | ★★★★★ (strongest via Aeon) |
Since 2024, Mizuho has fully partnered with Aeon Bank ATMs, so Mizuho members can use the roughly 6,000+ ATMs at Aeon Mall, Aeon supermarkets, and Ministop nationwide under the same fee-free terms — giving it the strongest coverage in regional cities and suburban shopping centers. Olive’s own ATMs being free 24/7 is an advantage that doesn’t require any membership tier. If you live near an Aeon, Mizuho is very convenient; if you mostly use convenience-store ATMs and want a digital-first experience, Olive suits you better.
5. Dimension 4: Overseas Transfer Capability
For foreigners, the convenience of receiving and sending overseas transfers is key.
| Item | MUFG | SMBC | Mizuho |
|---|---|---|---|
| SWIFT code | BOTKJPJT | SMBCJPJT | MHCBJPJT |
| Overseas network | 40+ countries/regions (strongest) | leaner | 40+ countries/regions |
| Incoming (yen-denominated) | about 4,000 yen | about 3,500-4,000 yen | about 2,500-4,000 yen (can be 0 when sender pays charges) |
| Incoming (foreign → FC account) | free (individuals) | lifting charge from ~2,500 yen | lifting charge from ~2,500 yen |
| Outgoing (online/app) | lower fees, higher limits | lower | app transfers require prior transaction history at a branch |
| Asia partner perks | broad coverage | China, Indonesia, Malaysia, etc. SMBC local-subsidiary perks |
average coverage |
| Exclusive special service | U.S. Bank account referral (open a U.S. account before you move) | — | — |
All three banks will partially revise their foreign-exchange fees (incoming transfers, etc.) on October 1 and December 14, 2026. The fees in this section are approximate; once the revisions take effect, please rely on official announcements.
For small transfers (up to a few hundred thousand yen), bank fees are far higher than specialist services (by several times). Choose based on the use case: small and frequent → Wise or Revolut; large or formal transactions → a bank.
MUFG is just about the only bank in Japan that lets you open a U.S. Bank account from within Japan in advance (started July 20, 2023, succeeding the former Union Bank referral service). Conditions: an MUFG ordinary deposit account, a Japan resident aged 18+, an obtained (or pending) U.S. visa, and, as a rule, a move to the U.S. within 90 days (U.S. citizens don’t need a visa). Process note: branch counters can’t handle this — download the referral request form, then mail the form plus your identity documents to MUFG’s “Mail Order Center,” MUFG forwards it to U.S. Bank, and you complete the opening per U.S. Bank’s email instructions. It takes about 1-2 months from referral to opened account, so start well before you leave.
6. Dimension 5: Credit-Card Rewards & Partner Merchants
For anyone serious about points (poikatsu), this is the core dimension. All three advertise “up to 20% back,” but the mechanics, partner merchants, and caps differ greatly.
| Item | MUFG Card | SMBC Olive | Mizuho Rakuten Card |
|---|---|---|---|
| Flagship card (base) | MUFG Card (no annual fee, ever) |
Olive Flexible Pay (general) (no annual fee, ever) |
Mizuho Rakuten Card (no annual fee, ever) |
| Standard reward rate | 0.5% | 0.5% | effective ~2% (W-points) |
| Partner-merchant reward rate | about 5.5-7% (with bonuses) | about 7-8% (credit mode) | Rakuten Ichiba SPU stacking |
| Maximum reward cap | 20% (Premiums Act limit) | 20% (Premiums Act limit) | Rakuten Ichiba SPU multiplier system |
| Partner-merchant types | includes some supermarkets (~30 brands: OK, Tokyu Store, etc.) | convenience stores, dining, cafes (no supermarkets) | all Rakuten Ichiba shops |
| Eligible payment methods | physical card touch, Apple Pay (QUICPay) | mainly smartphone Visa touch + Mobile Order | Mizuho Rakuten Card payment |
| Top-tier card | Platinum / American Express | Platinum Preferred (33,000 yen) + Olive Infinite (99,000 yen, now live) |
Rakuten Premium Card, etc. |
| Main points | Global Points (migrating to emoot points) |
V points | Rakuten Points + Mizuho Points |
The answer depends on how you spend:
- 🏪 Shop at supermarkets often (OK, Tokyu Store, etc.) → the MUFG Card wins (the only one covering ~30 brands that include supermarkets)
- 🍔 Convenience stores, Matsuya, Saizeriya, KFC, Sushiro, etc. → SMBC Olive wins (~7-8%, via smartphone Visa touch)
- 🛒 Heavy Rakuten Ichiba user → the Mizuho Rakuten Card has the edge (W-points at an effective ~2%, plus SPU stacking)
- 💼 High spender chasing the highest investing rewards → Olive Infinite (SBI Securities credit-card investing up to 6%, now live)
Practical tip: hold the MUFG Card + SMBC Olive + Mizuho Rakuten Card all at once and switch by merchant. All three have no annual fee, so there’s zero cost.
7. Dimension 6: Investment Integration (Credit-Card Investing & Online Brokers)
This is the most-watched dimension of 2026, and the three banks pursue completely different strategies.
| Item | MUFG | SMBC | Mizuho |
|---|---|---|---|
| Partner online broker | MUFG e-Smart Securities (formerly au Kabucom; wholly owned) |
SBI Securities (business alliance) |
Rakuten Securities (Mizuho Securities holds 49%) |
| Monthly credit-card investing limit | 100,000 yen | 100,000 yen | 100,000 yen |
| Base-card investing reward | 0.5% | 0.5% | 0.5-1% (Mizuho Rakuten Card) |
| Platinum-card investing reward | 1.0% | normally up to 4.0% (Platinum Preferred) | about 1% |
| Highest investing reward (achievable) | 1.0% | up to 6.0% (Olive Infinite, live 5/26) | effective ~2% (W-points) |
| How 6% works | — | normally up to 4% + up to a further +2% via the Olive asset-management service (requires enrolling and meeting balance conditions) | — |
| Bank → broker instant deposit | MUFG Money Connect | bank-broker linkage | easy deposit/withdrawal (free, instant) |
| Auto fund-accumulation debit | yes | yes | smart fund-accumulation purchase (no pre-funding needed) |
| Instant FC deposit/withdrawal | limited | limited | FC Direct (USD, free, instant) |
| Biggest fiscal-2026 change | emoot points (FY2026) + new digital bank (2nd half) | Olive Infinite launch (5/26) + new Olive Consulting company | joining Rakuten Bank group; Mizuho’s investment (10/1) + joint account-opening system |
On May 26, 2026, Sumitomo Mitsui Bank launched Olive’s top-tier card, “Olive Flexible Pay Visa Infinite”:
- 💎 Annual fee 99,000 yen (tax included) (free for family members; a metal card carries a separate issuance fee — around 33,000 yen, from autumn 2026)
- 👑 Japan’s first “Visa Infinite” (Visa’s highest tier)
- 📈 SBI Securities credit-card investing up to 6.0% = normally up to 4% (by annual spending) + up to a further +2% via the “Olive asset-management service” (up to ~72,000 points/year on 100,000 yen/month); the +2% requires enrolling in the service and meeting fairly high balance conditions
- 🎁 Sign-up bonus: spend 1 million yen within 3 months of joining → 100,000 points (worth roughly 100,000 yen, nearly covering the first-year fee). Note: if the annual fee is waived in year one due to balance conditions, you cannot also receive the new-member spending bonus
- 🎁 Ongoing bonuses: 40,000 points for 4 million yen/year, 110,000 points for 7 million yen/year (every year)
- 🏦 Banking perks: SMBC Direct transfers to other banks free 10x/month, convenience-store ATM fees free 10x/month, own ATMs free unlimited, plus 3 “choose-your-perk” benefits
- 🤝 “Flexible Consulting” (an AI chat plus advisers from SBI Securities, SMBC Nikko, and Sumitomo Mitsui Bank)
- 🏆 Metal card (autumn), concierge, and Priority Pass all included
Annual-fee waiver conditions (asset-based, assessed monthly): core requirements such as a Sumitomo Mitsui Bank ordinary yen balance of 5 million yen or more PLUS an SBI Securities balance of 5 million yen or more, with a combined total of 50 million yen or more. From year two, also 1 million yen or more in annual Olive Flexible Pay spending.
Break-even: around 4 million yen/year in spending, Platinum Preferred (33,000 yen) offers better value; if you can meet the 50-million-yen fee-waiver condition, Olive Infinite makes a strong case. It’s clearly aimed at high-net-worth and emerging-affluent users.
※ On the “6.5% credit-card investing” figure: some outlets initially reported 6.5% (a +0.5% on top of 6% from a yen-deposit balance), but this was largely corrected/standardized to up to 6%. This article follows the “up to 6%” stated by the official source and mainstream media.
This article’s “Mizuho = Rakuten alliance” positioning rests mainly on two capital relationships. On May 20, 2026, Rakuten Group and Mizuho Financial Group formally announced a restructuring of their financial businesses:
- 🏦 Mizuho Bank will invest in Rakuten Bank (a voting-rights ratio of 10.52%, equivalent to roughly 5.8% of common shares), completing October 1, 2026.
- 🔄 Mizuho Financial Group will divest its Rakuten Card holding (14.99%) and redirect the funds into the Rakuten Bank investment (a “co-equal” capital and business alliance).
- ✅ Mizuho Securities’ 49% stake in Rakuten Securities stays unchanged.
- 🏢 Rakuten will make Rakuten Bank its financial holding company, bringing Rakuten Card and Rakuten Securities Holdings under it (Rakuten Bank remains listed).
The Mizuho Rakuten Card itself and its W-points continue for now, but the longer-term “Mizuho × Rakuten ecosystem” structure will evolve (the focus shifts from “co-issued card” to “Rakuten Bank’s deposit base”). If you’re choosing Mizuho mainly for the “Mizuho Rakuten Card + Rakuten ecosystem” angle, confirm the latest terms on the official site before applying.
SMBC + Olive Infinite
Investing up to 6% (live May 26) is the strongest in Japan. The mechanism is normally up to 4% (by annual spending) plus up to a further +2% via the Olive asset-management service (requires enrolling and meeting balance conditions). It carries a 99,000 yen/year fee, but spending 1 million yen within 3 months of joining returns 100,000 points, nearly covering the first-year fee.
Mizuho + Rakuten Securities
The Mizuho Rakuten Card’s no annual fee + effective ~2% rewards is the best value pick. The bank-broker linkage — easy deposit/withdrawal, smart fund-accumulation purchase, and FC Direct, all free and instant — is the deepest of the three (built on Mizuho Securities’ 49% stake in Rakuten Securities, which is maintained after the restructuring).
MUFG + e-Smart
Renamed “MUFG e-Smart Securities” in 2025 (formerly au Kabucom), it’s a wholly owned subsidiary. Investing rewards are 0.5-1%. The new “emoot” brand launched in June 2025, and with emoot points and a loyalty program in fiscal 2026, plus a new digital bank in the second half, there’s real upside ahead.
8. Dimension 7: Digital Experience (App & Online Banking)
This is the fiercest battleground for the mega banks in 2026 — whoever delivers the better digital experience attracts more users in their 20s and 30s.
| Item | MUFG | SMBC Olive | Mizuho |
|---|---|---|---|
| Overall digital brand | emoot (operating since June 2025) |
Olive (since March 2023; 6M+ users) | Mizuho Mileage Club |
| App integration level | ★★★★ (total asset management in the app since June 2025) | ★★★★★ (industry-leading) | ★★★ (Rakuten Securities balance display linkage) |
| Multifunction card | — | Olive Flexible Pay 4-in-1 | — |
| App languages | 5 languages (WOVN.io) | mainly English | mainly Japanese & English |
| Biggest 2026 highlight | new digital bank (2nd half of FY2026) + emoot points (up to 20% back) + 5-tier loyalty | Olive Infinite (live 5/26) | Mileage Club simplification (effective Feb 15, 2026) + joining Rakuten Bank group (10/1) |
| AI & asset-management use | WealthNavi made a subsidiary + MAP (asset advisory platform) in development | Moneyforward linkage, SBI integration, Olive Consulting | limited |
| Target user base | all generations (40M existing accounts) | mostly 20s-30s | broad, traditional |
It’s easy to mix these up. “emoot” is a brand already in operation (since June 2, 2025, upgrading the bank app into a total asset-management app and unifying group services); the “new digital bank” is a separate initiative, slated to open in the second half of fiscal 2026, with Google Cloud as its core banking platform, billed as fusing the branch network with a digital experience. “emoot points” (group-wide points, up to 20% back) arrive in fiscal 2026. MUFG is the first of the three to set up a digital bank directly within the group.
9. Dimension 8: The Complete Latest-Developments Timeline
This section holds the most actionable content in the article — the key changes in the mega-bank industry over the past year, laid out chronologically:
MUFGNew financial brand “emoot” begins operating
MUFG overhauled its retail services on a large scale, upgrading the MUFG Bank app into a “total asset-management app” that unifies banking, credit cards, securities, and inheritance services. It also previewed group-wide “emoot points” for fiscal 2026 and the new digital bank for the second half of fiscal 2026.
All banksBOJ rate hike / three banks announce savings-rate increases
The Bank of Japan decided to raise its policy rate (the uncollateralized overnight call rate to 0.75%). The three mega banks plus Sumitomo Mitsui Trust Bank announced an ordinary savings rate increase from 0.2% to 0.3% (effective February 2, 2026). MUFG and Mizuho also moved to raise their short-term prime rates.
SBI groupSBI Shinsei Bank raises its savings rate
SBI Shinsei Bank raised its ordinary savings rate from 0.21% to 0.3%, along with the preferential rate on accounts linked to SBI Securities.
SMBCOlive Flexible Pay reward rate increase
Olive Flexible Pay raised its credit-mode reward rate at partner merchants. Aozora Bank’s BANK branch also raised its ordinary savings rate to 0.75% (up to 1 million yen; 0.5% on the excess) from February 2, 2026.
All three unifiedOrdinary savings rate hits 0.3% (a 33-year high)
MUFG, SMBC, Mizuho, and Sumitomo Mitsui Trust Bank uniformly raised their ordinary savings rate from 0.2% to 0.3%. For MUFG, SMBC, and Sumitomo Mitsui Trust, that’s the highest level in about 33 years — since 1993.
MizuhoMajor Mileage Club simplification takes effect
Mizuho’s “happy perks” went from a three-tier S/A/B system to a single unified S stage. Meeting just one of three conditions — at least one use of an eligible card / salary or pension deposit / a combined balance of 3 million yen or more — qualifies for perks equivalent to the old S stage. Setting up subscriptions to be paid by the Mizuho Rakuten Card makes it sustainable on its own (Feb 15 – Mar 20 runs old and new in parallel; the new conditions apply from Mar 21).
MizuhoRakuten financial restructuring formally announced / Mizuho to invest in Rakuten Bank 🔔
Rakuten Group and Mizuho Financial Group made a formal announcement. On October 1, Rakuten will restructure its financial businesses, consolidating Rakuten Card and Rakuten Securities Holdings under Rakuten Bank. Mizuho Bank will divest its Rakuten Card shares (14.99%) and redirect the funds into an investment in Rakuten Bank (10.52% voting rights; about 5.8% of common shares), moving to a “co-equal” capital and business alliance. Mizuho Securities’ 49% stake in Rakuten Securities is maintained. The “Mizuho ecosystem” structure shifts toward deposit-base cooperation.
SMBCOlive Infinite officially goes live 🎉
Sumitomo Mitsui Bank launched Olive’s top-tier card, “Olive Flexible Pay Visa Infinite.” Annual fee 99,000 yen (tax included), the first Visa Infinite in Japan, SBI Securities credit-card investing up to 6% (normally up to 4% + up to a further +2% via the asset-management service), 100,000 points for spending 1 million yen within 3 months of joining, and an ongoing 110,000 points for 7 million yen/year in spending. The annual fee can also be waived under asset conditions (Olive balance of 50 million yen, etc.). The Olive Consulting (a new company) service also began the same day.
MizuhoMizuho Securities & Rakuten Securities joint account-opening system goes live
The “joint account-opening system” announced in 2026 is slated to go live, expected to improve the account-opening experience at both Mizuho Securities and Rakuten Securities.
MizuhoRakuten financial restructuring completes / Mizuho invests in Rakuten Bank
Rakuten’s financial-business restructuring is set to complete. Rakuten Bank becomes the financial holding company, and Mizuho Bank invests for 10.52% of the voting rights. On the same day, the three banks also plan a partial revision of foreign-exchange fees (incoming transfers, etc.). Anyone making overseas transfers should review the revised terms.
All banksChanges to small-transfer fee notation and structure
The fee structure for small transfers is set to change, including a shift in the notation of yen-exchange and foreign-currency handling fees from fractions to decimals.
MUFGNew digital bank + emoot points in full swing
MUFG’s new digital bank, built on Google Cloud, is slated to open. An asset-advisory service (MAP) using AI to analyze data on roughly 40 million customers, a 5-tier loyalty program, and group-wide “emoot points” (up to 20% back) move into full operation. The bank also plans to open new physical branches for the first time in 20 years.
10. Recommendations for 7 Typical User Profiles
After all those comparison dimensions, which one should you actually pick? Here are precise recommendations for the 7 most common foreigner profiles in Japan:
1. Chinese, Korean, or Vietnamese speaker
→ MUFGWhy: via WOVN.io, MUFG offers complete five-language support across its website and online banking (English, Simplified/Traditional Chinese, Korean, Vietnamese) — unique among the three mega banks. Residence-status renewal reminders also come in multiple languages.
Game plan: MUFG primary account + MUFG Card (no annual fee) + e-Smart Securities for investing. The multilingual support makes everyday banking friction-free.
2. Planning to work, study, or travel to the U.S.
→ MUFGWhy: MUFG is just about the only bank in Japan that lets you open a U.S. Bank account from within Japan in advance (the U.S. Bank referral service, started July 20, 2023). If you’re moving to the U.S. within 90 days, you can complete the paperwork in Japan and use the account the moment you arrive.
Game plan: open an MUFG account → download and mail the referral request form to the Mail Order Center (branches can’t process it) → about 1-2 months of review → the account is ready when you move.
3. Digital-first; want the fastest opening and the highest points
→ SMBC OliveWhy: SMBC Olive is the most aggressive on digital of the three — foreigners can open in-app too, an account number in as little as an hour, the Olive Flexible Pay 4-in-1 card, and up to 20% back at partner merchants (smartphone Visa touch) + Mobile Order.
Game plan: open Olive → set up Apple Pay/Google Pay on your phone → use Mobile Order at convenience stores, Matsuya, Saizeriya, etc. → choose the “salary deposit perk” for a monthly boost → monthly rewards can reach double digits.
4. SBI Securities user / high-net-worth spender
→ SMBC Olive Infinite (now live)Why: Olive Infinite (99,000 yen/year), live since May 26, 2026, takes SBI Securities credit-card investing up to 6% (normally up to 4% + up to a further +2% via the Olive asset-management service). Spending 1 million yen within 3 months of joining returns 100,000 points, nearly covering the first-year fee (note: this can’t be combined with a year-one fee waiver).
Game plan: apply via the Sumitomo Mitsui Bank app → enroll in the Olive asset-management service and meet the balance conditions → invest 100,000 yen/month via credit card → up to ~72,000 points/year in rewards. If you can meet conditions like a 50-million-yen Olive balance, you can also waive the annual fee.
5. Heavy Rakuten ecosystem user
→ MizuhoWhy: Mizuho is the only one of the three with a deep capital tie to the Rakuten ecosystem (Mizuho Securities holds 49% of Rakuten Securities, maintained after the restructuring). The Mizuho Rakuten Card’s W-point plan (Rakuten Points + Mizuho Points, with a cap on Mizuho Points) gives an effective ~2%, on top of Rakuten Ichiba SPU stacking.
Game plan: Mizuho primary account → Mizuho Rakuten Card (no annual fee, ever) → Rakuten Securities account → pay subscriptions with the Mizuho Rakuten Card (sustaining Mileage Club S) → multiply rewards during Rakuten shopping events and SPU campaigns. Watch the Mizuho × Rakuten capital realignment before applying (see section 9).
6. Newly arrived full-time employee, in Japan under 6 months
→ MizuhoWhy: Mizuho is the most flexible of the three for foreigners — if you’ve been in Japan under 6 months but are working as a full-time employee, you can apply with just a staff ID or certificate of employment. MUFG enforces the 6-month rule strictly; SMBC applies it in principle (with some flexibility).
Game plan: apply within 2-3 weeks of arriving → bring a staff ID or certificate of employment + your residence card → open in-app and get an account number the same day at the earliest → receive your salary as soon as the first month.
7. Receiving large family transfers from overseas
→ MUFGWhy: MUFG has a better cost structure for receiving overseas transfers — foreign-to-foreign-account transfers are free, and yen-denominated transfers are a fixed ~4,000 yen. At SMBC and Mizuho, foreign-to-foreign incurs a lifting charge of at least ~2,500 yen. MUFG’s SWIFT network spans the globe, with 40+ countries.
Game plan: MUFG primary account + a foreign-currency account (USD, EUR, etc.) → have the overseas sender use a yen-denominated, sender-pays transfer → avoid being eaten away by layered fees.
11. The Strongest 2-3 Bank Combos
In practice, most savvy foreigners in Japan use a combination of 2-3 banks: a mega bank as the backbone primary account, an online bank as a high-yield vault, and a specific bank for points. Here are the three strongest combos we recommend:
Combo A: The International Route
MUFG + Aozora Bank BANK + SBI SecuritiesBest for: people who need Chinese/Vietnamese support, those receiving large overseas transfers, those moving to the U.S., and anyone wanting steady wealth-building.
🏦 MUFG primary account (multilingual, overseas transfers, U.S. Bank referral, 40+ country network)
💎 Aozora Bank BANK high-yield vault (ordinary savings at 0.75% up to 1 million yen, 0.5% on the excess, from February 2026)
📈 SBI Securities investment account (NISA, iDeCo, Japanese and U.S. stocks)
💳 MUFG Card (used by scenario)
Combo B: The Digital Points Route
SMBC Olive + SBI Shinsei Bank + Rakuten BankBest for: digital-first users in their 20s-30s, heavy points collectors, SBI Securities users, and anyone chasing the highest reward rates.
🏦 SMBC Olive primary account (digital, up to 20% back at partner merchants, SBI Securities integration)
💎 SBI Shinsei Bank high-yield (ordinary savings 0.3%, 0.5% preferential when linked to SBI Securities)
🛒 Rakuten Bank points account (Money Bridge, SPU boost)
💳 Olive Flexible Pay + Rakuten Card (used by scenario)
Combo C: The Rakuten Ecosystem Route
Mizuho + Rakuten Bank + Rakuten SecuritiesBest for: heavy Rakuten ecosystem users, people with lots of subscriptions, newly arrived full-time employees, and anyone wanting strong no-annual-fee rewards.
🏦 Mizuho primary account (Rakuten alliance, sustaining Mileage Club S, easy deposits)
🛒 Rakuten Bank sub-account (Money Bridge, SPU boost, multiplied Rakuten Ichiba points)
📈 Rakuten Securities investment account (NISA, SPU-linked fund accumulation)
💳 Mizuho Rakuten Card (no annual fee, effective ~2% rewards)
Once you’re comfortable running three banks, you can add a special-purpose bank:
- 📲 IDARE: a prepaid card with a 2% annual yield, for holding emergency funds
- 🚄 JRE BANK: JR East-affiliated, with perks like 40%-off Shinkansen tickets and Green Car passes
- 💴 Wise + Revolut: the strongest combo for overseas transfers and international travel
- 🏦 au Jibun Bank: a high yield when conditions are met, plus several free transfers to other banks
12. The Final Call — Decision Card
Finally, here’s a decision card you can use to make up your mind in five seconds:
🎯 Decision Card: Which One Should You Choose?
13. Overall Scorecard
Finally, a single scorecard bringing all 8 dimensions together (star ratings are this article’s subjective assessment based on public information, for reference only):
| Dimension | MUFG | SMBC Olive | Mizuho |
|---|---|---|---|
| Account-opening friendliness | ★★★ (branch only) | ★★★★★ (fastest in-app) | ★★★★★ (full-time exception) |
| Multilingual support | ★★★★★ (5 languages) | ★★★ (mainly English) | ★★ (JP/EN) |
| ATM network | ★★★★ (ample own ATMs) | ★★★★ (free 24/7) | ★★★★★ (Aeon partnership) |
| Overseas transfers | ★★★★★ (U.S. Bank, 40+ countries) | ★★★★ (Asia perks) | ★★★ (average) |
| Credit-card rewards | ★★★★ (incl. supermarkets) | ★★★★★ (~7-8%, smartphone) | ★★★★ (W-points ~2%) |
| Investment integration | ★★★★ (in-group) | ★★★★★ (Olive Infinite 6%, live) | ★★★★★ (deep Rakuten Securities ties) |
| Digital experience | ★★★★ (emoot) | ★★★★★ (Olive, 6M+) | ★★★ (Rakuten linkage) |
| Momentum on new developments | ★★★★★ (new digital bank) | ★★★★★ (Olive Infinite, live) | ★★★★ (Rakuten realignment, Mileage simplification) |
| Best for | international users, large overseas transfers, U.S.-bound | digital-first, points fans, SBI Securities users | Rakuten fans, newcomers |
Each has its own “overwhelming, exclusive strength”: MUFG → international reach, languages, overseas transfers; SMBC → digital, points, SBI Securities; Mizuho → Rakuten alliance, flexible opening, Aeon ATMs. Don’t agonize over “which is best” — pick the one that best matches your needs, or be smarter and open two to use together.
14. FAQ — Common Real-World Questions
You won’t be rejected for it. Japanese law allows residents to hold multiple bank accounts. Each bank reviews independently, so being turned down at one has no knock-on effect when you apply elsewhere. It’s a good idea to space out your applications (1-2 months apart) to avoid triggering anti-money-laundering scrutiny.
Absolutely. Many savvy users open 2-3. Note that each bank requires you to submit all documents again (residence card, My Number, personal seal, etc.). When opening in-app, you just photograph and upload the documents, which is far faster than the counter.
Yes, you still do. A mega bank’s 0.3% is up from 0.2% in 2025, but it’s still far below online banks like Aozora Bank BANK at 0.75%. The interest difference on 1 million yen over a year (before tax):
- Mega bank 0.3% = 3,000 yen
- Aozora Bank BANK 0.75% (portion up to 1 million yen) = 7,500 yen
- Difference: about 4,500 yen/year (before tax)
For funds you’ll hold over the medium to long term, a high-yield account still makes sense.
Most users don’t. The 99,000 yen annual fee (tax included) is waived only if you meet fairly high balance conditions (an Olive balance of 50 million yen, etc.), or you’d need over 7 million yen/year in spending for the ongoing bonus to clearly beat Platinum Preferred. For ordinary users, Olive Platinum Preferred (33,000 yen) or the general card (no annual fee, ever) is plenty. That said, the sign-up bonus of 100,000 points for spending 1 million yen within 3 months is worth running the numbers on if you have a large purchase coming up (note: it can’t be combined with a year-one fee waiver).
The core difference is the W-point plan. With the Mizuho Rakuten Card, you earn Rakuten Points + Mizuho Points at the same time (Mizuho Points are capped) = an effective ~2%; a regular Rakuten Card is just 1%. But the Mizuho Rakuten Card’s billing account is limited to Mizuho Bank. You can hold both. Note: the Mizuho × Rakuten capital relationship is formally realigning in October 2026 (Mizuho invests in Rakuten Bank and divests its Rakuten Card shares), so longer-term terms may change (see section 9).
Since February 2, 2026, all three are uniformly at 0.3% — no difference. But that’s still far below online banks (0.5-0.75%). For a higher yield, consider Aozora Bank BANK, SBI Shinsei Bank, SBI Sumishin Net Bank, and the like.
Based on informal observation: students and newcomers → Japan Post Bank (Yucho) or Mizuho (full-time exception); ordinary workers → MUFG (complete multilingual support, international); digital-first users in their 20s-30s → SMBC Olive; Rakuten ecosystem users → Mizuho (Mizuho Rakuten Card).
All three generally require a branch visit or advance application: MUFG closes at a branch in principle (you can keep it open while living abroad via “Global Direct”); SMBC can handle some steps in-app; Mizuho closes at a branch in principle. Before closing, confirm that all automatic debits have stopped.
All mega banks require foreign customers to promptly submit a copy of the new residence card after a residence-status renewal. Failing to do so can lead to a “transaction restriction” on the account (including being unable to receive salary deposits). SMBC Olive lets you upload the update via the app most conveniently; MUFG may require a branch visit.
All three have major progress, some of it already in place: SMBC → Olive Infinite went live on May 26 (done); Mizuho → the Mileage Club simplification took effect in February (done) and the Rakuten financial restructuring completes October 1 (announced); MUFG → its new digital bank and emoot points move into full swing in the second half of fiscal 2026 (the most imaginative over the long term, still in progress).
15. Conclusion: You’re Ready
In this finale we’ve compared Japan’s three mega banks (MUFG, SMBC Olive, Mizuho) across 8 core dimensions, given recommendations for 7 user profiles, laid out 12 key milestones, and offered 3 of the strongest combo strategies.
The core takeaways:
- ✅ There’s no “best” mega bank — only the one that best matches your needs
- ✅ For most foreigners in Japan, the optimal strategy is a two-bank combo: one mega bank as the primary + one online bank for high yield
- ✅ The past year has been a period of major change for Japan’s mega banks — rates, points, and digitalization have all leveled up, Olive Infinite is officially live, and the Mizuho × Rakuten capital relationship formally realigns in October
- ✅ By combining different banks, you can enjoy international reach (MUFG) + digital strength (SMBC) + the Rakuten alliance (Mizuho) all at once
That wraps up our three-part Mega Bank series. If these four articles helped you reach a decision, feel free to share them with friends in Japan — good financial choices bring peace of mind and save real money over the long run.
This series has four parts; reading them in order works best:
- MUFG Bank — Complete Guide — international, multilingual, U.S.-bound
- Sumitomo Mitsui Banking (SMBC) + Olive — Complete Guide — digital, points, SBI integration
- Mizuho Bank — Complete Guide — Rakuten alliance, full-time exception, Aeon ATMs
- Japan’s 3 Mega Banks Compared (this article) — 8 dimensions, 7 profiles, 3 combos, 12 milestones
👇 Ready to open an account? All three mega banks have official referral programs, and opening through a referral earns you extra perks. Use the matching referral code for the bank you want to open:
🟥 MUFG Bank: referral code s800487740, and you receive 1,500 yen (⚠️ for Japanese nationals only — foreign nationals can’t join the referral but can still open an account normally):
🟩 Sumitomo Mitsui Bank / Olive: referral code FF24531-9441419, and with a balance of 10,000 yen by the end of the month after you sign up, you receive 1,000 yen worth of V points (foreigners can join too):
🟦 Mizuho Bank: referral code M226684478, and you receive 1,000 yen worth of Mizuho points (foreigners can join too, and it stacks with the new-life campaign):
