Japan Post Bank pays 0.20% on ordinary savings. Rakuten Bank pays up to 0.48% if you jump through three hoops. SBI Sumishin Net Bank can hit 1.0% on a hybrid deposit. The gap between these three banks is bigger than most expat guides let on.
But the rate alone tells you almost nothing about which account will cause you fewer headaches on a Tuesday morning in Shinjuku.
This comparison is for the expat or long-term resident who already has a residence card and wants one reliable savings account. Not a fintech stack. Not a five-bank optimization strategy. One account that works.
Japan Post Bank Ordinary Savings Rate and ATM Access
Japan Post Bank pays 0.20% on ordinary deposits as of 2026, which rose from 0.10% after the Bank of Japan's rate hikes through late 2025 and into 2026.
Time deposits go higher: a five-year term pays 1.0%, and a ten-year term pays 1.25%, according to Japan Post Bank's August 2026 rate revision.
Can You Open a Japan Post Bank Account on Day One?
Japan Post Bank is the only major option that lets foreigners open an account immediately after arrival. No six-month residency waiting period.
Walk into any post office with your residence card, passport, and My Number notification, and you can walk out the same day with a passbook.
The bank has over 24,000 branches inside post offices across the country. Even tiny rural towns have one. ATM access at Japan Post Bank works at 7-Eleven and FamilyMart convenience stores too.
Where Japan Post Bank Falls Short
English support at branch counters is spotty. Larger city branches sometimes have multilingual staff. Smaller ones don't.
The online banking interface works but feels dated compared to Rakuten or SBI Sumishin. And overseas transfer fees run between ¥3,000 and ¥7,500 per transaction.
Rakuten Bank Interest Rate: The 0.48% Requires More Steps Than You Think
Rakuten Bank's Money Bridge program raised its preferential rate to 0.48% on balances up to ¥10 million as of mid-2026, according to Rakuten's August 2026 press release.
Balances over ¥10 million earn 0.42%. The base ordinary deposit rate without Money Bridge sits at 0.30%.
How Money Bridge and Bonus Interest Work
Money Bridge links your Rakuten Bank account to a Rakuten Securities account. The securities account sweeps idle funds back to your bank deposit each evening. Setting it up is free, and it takes about ten minutes online.
Miss the window, and you earn the base rate for that entire month. A separate Bonus Interest program stacks another 0.12% or more if you receive your salary through Rakuten Bank and set up automatic transfers.
So the "maximum 0.64%" headline rate some Japanese finance blogs quote assumes you hit every condition simultaneously.
Rakuten Bank for Expats: The Ecosystem Question
I think Rakuten Bank only makes sense if you already shop on Rakuten Ichiba, because the points integration is where the real return compounds.
If you don't use the Rakuten ecosystem, you're opening a securities account just to squeeze out 0.18% above the base rate. Account opening is fully online. No branch visit. But Rakuten Bank's application and banking interface is mostly in Japanese.
English support exists through their help center during limited hours. The app itself has improved, but don't expect the same English coverage you'd get from SBI Shinsei.
SBI Sumishin Net Bank: Highest Rate, Steepest Learning Curve
SBI Sumishin Net Bank (now rebranded as DOCOMO SMTB Net Bank) offers a hybrid deposit rate of up to 1.0% when linked with SBI Securities, according to ExpatJapan's 2026 savings comparison.
The standard ordinary deposit rate sits around 0.50% without the securities link.
The Hybrid Deposit Structure
The hybrid deposit sweeps funds between your SBI Sumishin bank account and your SBI Securities account. Idle cash sitting in the securities sweep earns the enhanced rate.
For anyone already using or planning to use NISA (Japan's tax-advantaged investment account) through SBI Securities, this setup is a natural fit.
Transferring money between the bank and securities accounts is instant. No manual steps once you've configured it.
Is SBI Sumishin Hard to Use in English?
Yes. The interface leans heavily Japanese. Phone support is almost entirely in Japanese.
Written FAQs have some English, but if something goes wrong with your account, expect to troubleshoot through translation tools or a Japanese-speaking friend.
ATM access runs through partnerships with 7-Eleven, Lawson, and FamilyMart ATMs. Transaction fees get waived a set number of times per month depending on your account tier.
Rate Comparison Table: Japan Post Bank vs Rakuten Bank vs SBI Sumishin
SBI Sumishin wins on rate. Japan Post Bank wins on accessibility. Rakuten sits in between, rewarding loyalty to its ecosystem.
| Feature | Japan Post Bank | Rakuten Bank | SBI Sumishin |
|---|---|---|---|
| Ordinary deposit rate | 0.20% | 0.30% (base), 0.48% (Money Bridge) | 0.50% (standard) |
| Max rate with securities link | N/A | 0.48% to 0.64% | Up to 1.0% (hybrid deposit) |
| Account opening for new arrivals | Yes, day one | Online, may need 6 months | Online, may need 6 months |
| English support | Limited (branch) | Limited (online help center) | Very limited |
| ATM network | 24,000+ own ATMs + convenience stores | Convenience store ATMs | Convenience store ATMs |
| Monthly fees | ¥0 | ¥0 | ¥0 |
Who Should Pick Which Bank?
Each bank fits a different stage of life in Japan, and I'd argue picking by interest rate alone is a mistake when your Japanese reading ability determines whether you can troubleshoot a locked account at 11 PM.
New Arrivals and Students
Japan Post Bank. No contest. You can open it the week you land. The rate is the lowest of the three, but a ¥1 million deposit at 0.20% earns about ¥1,594 after tax annually.
The difference between that and Rakuten's 0.48% on the same balance is roughly ¥2,200 per year. For a student, the convenience of 24,000 ATM locations and same-day account opening outweighs that gap.
Rakuten Ecosystem Users
If your salary hits a Rakuten Bank account and you already hold a Rakuten Card, Money Bridge is a no-brainer second account.
The points accumulation across Rakuten Ichiba, Rakuten Pay, and Rakuten Securities adds up faster than the interest differential alone suggests.
Active Investors Planning to Use NISA
SBI Sumishin paired with SBI Securities. The 1.0% hybrid deposit rate on idle cash between trades is hard to beat anywhere in Japan's consumer banking market. But go in knowing the support is almost entirely Japanese-language.
The Six-Month Residency Rule Is Softer Than You Think
The Foreign Exchange and Foreign Trade Control Law technically requires six months of residency for most bank accounts. But enforcement varies wildly. Japan Post Bank ignores it entirely for practical purposes.
Rakuten Bank and SBI Sumishin are stricter on paper but sometimes approve applications earlier if you hold a valid residence card with a registered address.
The common mistake:
- Waiting six months to open any account at all.
- Open Japan Post Bank immediately.
- Then add Rakuten or SBI Sumishin once you've settled and know which ecosystem fits your spending.
I'd push back on the advice to "just open SBI Shinsei because it has English support." SBI Shinsei Bank is a separate institution from SBI Sumishin Net Bank, and the two get confused constantly in expat forums.
SBI Shinsei's Diamond Stage rate of 0.42% is solid, but it requires meeting loyalty tier conditions that new residents rarely qualify for in their first year.
Precautions and Common Mistakes
Expats trip over a few recurring issues when opening Japanese savings accounts:
- My Number confusion: all three banks now require your My Number for tax reporting. Bring your My Number notification card or Individual Number Card to every bank appointment.
- Seal vs. signature: Japan Post Bank accepts signatures. Some Rakuten and SBI Sumishin processes assume you have a registered seal (hanko). Check current requirements on the bank's site before applying.
- Deposit insurance cap: Japan's Deposit Insurance Corporation (DICJ) covers ¥10 million per depositor per bank. If you hold more than that in one institution, split across banks.
Questions People Ask About Japanese Savings Accounts for Expats
A few searches keep popping up around this topic, so let me answer them directly.
- Q: Can I open a Japanese bank account without speaking Japanese?
Japan Post Bank is the safest bet. Larger branches in Tokyo, Osaka, and Nagoya often have multilingual application forms in up to 14 languages. Online banks like Rakuten and SBI Sumishin have English FAQ sections but limited real-time English support. - Q: Do Japanese savings accounts charge monthly fees?
All three banks covered here charge ¥0 in monthly maintenance fees for ordinary savings. ATM withdrawal fees apply outside of free-use windows, typically ¥110 to ¥220 per transaction at partner convenience store ATMs during off-hours. - Q: Is Japan Post Bank safe for large deposits?
Japan Post Bank is backed by the Japanese government's deposit insurance system through DICJ, covering up to ¥10 million per depositor. Amounts above that threshold are not covered, same as any other Japanese bank. - Q: Can I use my Japanese savings account to invest in NISA?
Directly through Japan Post Bank, no. You'd need a separate securities account. Rakuten Bank links to Rakuten Securities for NISA, and SBI Sumishin links to SBI Securities. Both make the transfer between bank and brokerage seamless once configured. - Q: What happens to my Japanese bank account if I leave Japan?
Most banks require you to close your account or convert it to a non-resident account before departing. Leaving an active account without notifying the bank can result in a frozen account. Check each bank's non-resident policy before booking your flight home.
Conclusion
The Bank of Japan's benchmark rate hit 1.25% in September 2026, the highest since the mid-1990s. Japanese savings rates are moving in a direction they haven't moved in a generation.
Picking the right account now locks you into an ecosystem you'll use for years. Take the thirty minutes to compare these three banks against your own daily habits, not someone else's spreadsheet.