Time Deposit Calculator — Japan
Calculate your fixed-deposit maturity value and interest in JPY at current rates. No signup, no account needed.
Enter a deposit amount, a rate between 0% and 100%, and a term above zero (up to 50 years) to see results.
Fixed deposit rates in Japan (2026)
Time deposit rates ≈ 0.3–0.6% p.a. for 1-5 year terms. Rates edging up from historic zero-lower-bound. Top rates at online banks: SBI Shinsei, Aeon Bank.
At around 0.5%, the fixed-deposit rate in Japan is far below the global norm - among the lowest deposit rates anywhere, so keeping fees and charges near zero matters more than the headline rate.
Reference figures, ~2026. FD interest is often taxable and rates vary by bank and tenure - verify the current rate before depositing.
Worked example
For every ￥3,000,000 deposited at 0.50% for 5 years (quarterly compounding):
- Maturity value: ￥3,075,897
- Interest earned: ￥75,897
Scale to your deposit amount. Longer tenures and higher rates grow the maturity value; compare banks before locking in.
How to get the best fixed-deposit return in Japan
- Compare several banks - smaller and digital banks often pay more than the big high-street names.
- Ladder your deposits across different tenures so some matures regularly and you can reinvest at new rates.
- Check how often interest compounds; more frequent compounding grows the maturity value.
- Factor in tax on the interest, and compare against short-term government bills or bonds.
A real-data rate check: fixed deposit rates in Japan (2026)
Many calculators still default to the near-zero rates Japan had for two decades, but that assumption is now outdated. After years of negative and near-zero rates, the Bank of Japan raised its policy rate to around 1.0% in its June 16, 2026 decision, and megabanks have followed with higher deposit rates. As of September 2026, MUFG Bank, SMBC (Mitsui Sumitomo Bank), Mizuho Bank, and Resona Bank were all quoting a standard 1-year (12-month) JPY time deposit rate of 0.50% per year for ordinary account holders, according to a Diamond Online rate-comparison roundup published in September 2026. That is a meaningful jump from the roughly 0.20%-0.40% megabanks paid just a couple of years earlier, and it means a prior calculator default of 0.4% understates today's typical megabank rate — 0.5% is the more accurate baseline for a general depositor in 2026.
Rates vary a lot by bank type. Rakuten Bank's own June 2026 press release confirms its standard 1-year JPY time deposit rate was 0.40% annually (before tax) prior to a limited-time summer campaign that temporarily lifted the rate to 1.20% from June 8 to July 31, 2026. Internet-only and challenger banks push further: the same Diamond Online comparison (September 2026) lists SBI Shinsei Bank, Tokyo Star Bank, and SBJ Bank offering promotional 1-year rates as high as 1.70% for new account holders, and Orix Bank at 1.65% — over three times the megabank standard rate. The gap exists because internet banks carry lower branch overhead and use rate campaigns to attract new deposits, but these headline rates are often new-customer or limited-time offers rather than the rate an existing, general-population depositor earns automatically.
A more realistic example: using A = P(1 + r/n)^(nt) with a megabank-typical rate of r = 0.5%, annual compounding (n = 1, since a 12-month time deposit pays interest at maturity), and a principal of ¥1,000,000: after 1 year, A = 1,000,000 × (1 + 0.005/1)^(1×1) = ¥1,005,000, i.e. ¥5,000 in interest before tax — matching the megabank figure cited in the Diamond Online article. Rolled over for 3 years at the same rate, A = 1,000,000 × (1.005)^3 ≈ ¥1,015,075, or about ¥15,075 in cumulative interest before the standard 20.315% withholding tax on deposit interest in Japan. By contrast, the same ¥1,000,000 at a top internet-bank promotional rate of 1.70% would earn roughly ¥17,000 in the first year — illustrating why shopping around between megabanks and internet banks matters far more in Japan's current higher-rate environment than it did during the near-zero-rate years.
Frequently Asked Questions
How is FD maturity calculated in Japan?
Maturity = P × (1 + r/4)^(4n) for quarterly compounding, where P is the deposit, r the annual rate and n the years. fin·calc uses this standard method.
What is the current FD rate in Japan?
As a 2026 reference, fixed-deposit rates are around 0.5% per year, varying by bank and tenure. Time deposit rates ≈ 0.3–0.6% p.a. for 1-5 year terms. Rates edging up from historic zero-lower-bound. Top rates at online banks: SBI Shinsei, Aeon Bank.
Is FD interest taxable in Japan?
In most countries FD interest is taxable as income; some offer tax-advantaged or senior-citizen options. Check your local rules - the calculator shows the pre-tax maturity value.
Is a fixed deposit safe in Japan?
Fixed deposits carry no market risk. In Japan, deposits are protected by the DICJ up to ¥10 million plus interest per depositor, per bank. They trade higher safety for lower long-term returns than equities.
Should I choose a fixed deposit or invest instead in Japan?
A fixed deposit gives a guaranteed return and suits money you cannot afford to risk. Investing targets higher long-term growth but can fall in value. Many people keep an FD for safety and invest separately for growth.
What is a realistic default interest rate for a 12-month JPY fixed deposit in 2026?
As of September 2026, Japan's major megabanks (MUFG Bank, SMBC, Mizuho Bank, Resona Bank) were quoting standard 1-year JPY time deposit rates of about 0.50% per year, following the Bank of Japan's policy rate hikes to around 1.0% in June 2026 and 1.25% in September 2026. That makes 0.5% a more realistic calculator default than the older 0.4% figure used when BOJ rates were near zero.
Do internet banks in Japan really pay much higher fixed deposit rates than megabanks?
Yes. A September 2026 Diamond Online comparison found internet and challenger banks such as SBI Shinsei Bank, Tokyo Star Bank, and SBJ Bank offering 1-year promotional rates up to 1.70%, versus roughly 0.50% at megabanks — more than three times higher, since internet banks have lower overhead and use rate campaigns to attract deposits.
Are Japanese time deposit interest rates fixed for the whole term, and are they taxed?
A standard Japanese time deposit (定期預金) locks in its quoted annual rate for the deposit's term (e.g., 12 months), with interest normally paid at maturity — captured by using n = 1 (annual compounding) in A = P(1+r/n)^(nt). Interest income is subject to Japan's standard 20.315% withholding tax (income tax plus resident tax) unless held in a tax-advantaged account like NISA.
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Sources
Deposit rates are compiled from each country's central-bank publications and the typical offerings of its major banks, reviewed for 2026 and subject to change — always confirm the current rate with your bank before depositing. See our methodology and editorial policy for how we source and update this data.
Additional sources for this page
Rakuten Bank press release (June 8, 2026): 1-year JPY time deposit standard rate of 0.40% and summer campaign rate of 1.20%. Diamond Online / Diamond Zai rate ranking (September 2026): comparison of megabank (0.50%) vs. internet bank (up to 1.70%) 1-year fixed deposit rates. Bank of Japan Monetary Policy Meeting decision (June 16, 2026): policy rate guideline raised to around 1.0%. See our methodology and editorial policy for how we source and update this data.