Key facts at a glance
Self-burden below cap
¥2,000
Flat, no matter how much you donate up to your cap
One-Stop limit
5 municipalities
More than that, and you must file a tax return instead
Thank-you gift value
~30%
Of your donation, on top of the tax deduction
Here's the short version: below a calculated cap, Furusato Nozei (ふるさと納税, "hometown tax") costs you a flat ¥2,000 out of pocket, no matter how much you donate. Take a salaried taxpayer on ¥7,000,000 gross with no other deductions: their taxable income works out to roughly ¥3,559,750, their resident tax income levy to about ¥355,975, and their donation cap lands around ¥104,321. Donate up to that amount across the year, and national income tax plus a special resident-tax deduction return almost all of it to you, leaving just the ¥2,000 self-burden and a thank-you gift (返礼品) worth roughly 30% of what you donated, on top.
Go even ¥1 over that cap and the arithmetic flips. Everything above your limit stops qualifying for the special resident-tax deduction and becomes a plain donation instead, so donate ¥50,000 over the ¥104,321 cap and your real cost jumps from ¥2,000 to roughly ¥52,000. The cap is not a fixed number for everyone, it's driven by your income and your tax bracket, which is exactly why "how much can I donate" is the single most searched Furusato Nozei question every autumn among both Japanese taxpayers and foreign residents trying to make sense of it for the first time.
Enter your salary to see your own Furusato Nozei donation cap for 2026.
Open the Furusato Nozei CalculatorWhat Furusato Nozei actually is
Furusato Nozei is a national program that lets any Japanese taxpayer "donate" to a municipality of their choosing, anywhere in the country, not just their own hometown despite the name. In return, most municipalities send a thank-you gift (返礼品) worth up to roughly 30% of the donation, everything from Wagyu beef and local seafood to hotel vouchers and household goods. On top of the gift, the donation counts as a deduction split across two separate taxes: an itemized donation deduction against your national income tax, and a special deduction (特例控除) layered on top of the ordinary donation deduction against your resident tax (住民税), the same local tax discussed in our separate article on how Japan's resident tax works.
Put those two deductions together and, below your personal cap, they add up to almost the entire donation, leaving just the ¥2,000 self-burden. That's the mechanism that makes Furusato Nozei genuinely worth doing for most salaried workers in Tokyo, Osaka, and everywhere else in Japan: you're not really "donating" money you'll never see again, you're pre-paying tax you'd owe anyway, in exchange for a gift and a small amount of paperwork.
How the deduction ceiling is calculated
Your cap isn't a percentage of your salary, it's built from three pieces of your actual tax position. First, your resident tax income levy (所得割), the 10% flat-rate portion of resident tax charged on your taxable income after the employment income deduction and basic deduction, roughly ¥355,975 in our ¥7,000,000 example. Second, your marginal national income tax rate, meaning the bracket rate that applies to your very last yen of taxable income (5% up to ¥1,950,000 of taxable income, 10% up to ¥3,300,000, 20% up to ¥6,950,000, 23% up to ¥9,000,000, 33% up to ¥18,000,000, 40% up to ¥40,000,000, and 45% above that). Third, the 2.1% reconstruction surtax (復興特別所得税), a surcharge layered on top of national income tax that nudges your effective marginal rate slightly higher than the headline bracket number.
The special resident-tax deduction is engineered to exactly fill the gap that your marginal income tax rate leaves behind, so the two deductions combined add up to (almost) the whole donation regardless of which bracket you're in. For the technically minded reader, the literal formula is:
Run that on our ¥7,000,000 example: a 20% marginal national rate against a ¥355,975 resident tax income levy gives (355,975 x 0.20) / (1 − 0.10 − 0.20 x 1.021) + 2,000, which comes out to roughly ¥104,321. Donating exactly that much, split across as many municipalities as you like, costs you the ¥2,000 self-burden and earns a thank-you gift worth roughly ¥31,300 (about 30% of the donation), on top of the resident tax reduction you'd have owed anyway.
One-Stop Special System vs filing a tax return
The One-Stop Special System (ワンストップ特例制度) lets most salaried taxpayers skip a tax return entirely, but only under specific conditions.
| Feature | One-Stop Special System | Full tax return (確定申告) |
|---|---|---|
| Who qualifies | 5 or fewer municipalities donated to in the calendar year, and no other reason to file a return | 6+ municipalities, or you already need to file for another reason |
| Paperwork | One short form per municipality, mailed to each one, no return needed | Declare all donations on your 確定申告 (kakutei shinkoku) between mid-February and mid-March |
| Where the deduction lands | 100% as a resident tax reduction the following year | Split: part as an income tax refund shortly after filing, part as a resident tax reduction the following year |
| Deadline | Application must reach each municipality by 10 January of the following year | Filing deadline is mid-March of the following year (around 15 March) |
| If you mess it up | Miss the deadline or donate to a 6th municipality and the special treatment lapses, you must file a return instead | No municipality-count limit at all, this is the fallback that always works |
Note the eligibility condition is about municipality COUNT, not donation count: you can donate to the same municipality multiple times and still qualify for One-Stop, as long as the total number of distinct municipalities you donated to in the calendar year is 5 or fewer, and you don't otherwise need to file a return (for example, because you're self-employed, claiming a medical expense deduction, earning above ¥20,000,000, or working multiple jobs). Cross a 6th municipality, or need to file for any other reason, and the deduction shifts from a pure resident-tax reduction into a split between an income tax refund and a smaller resident-tax reduction, claimed via 確定申告 instead.
Common pitfalls that shrink your real cap
A salary-only cap estimate, like the ¥104,321 figure above, assumes no other deductions beyond the employment income deduction and the basic deduction. In reality, several common deductions shrink your taxable income further, and since your cap is calculated FROM taxable income, each one lowers your real cap below the salary-only estimate: iDeCo (個人型確定拠出年金) contributions, the life insurance premium deduction, the medical expense deduction, dependents, and the home loan tax credit (住宅ローン控除). If you're contributing to iDeCo, see our iDeCo tax relief calculator first and work out your Furusato Nozei cap on income AFTER those contributions, not before. Stacking a salary-only Furusato Nozei estimate on top of a full iDeCo contribution is one of the most common ways people accidentally donate over their real limit.
The second trap is the one that costs actual money: exceeding your cap doesn't mean you lose the whole benefit, it means every yen above the cap is charged at essentially full price. Below the cap, ¥1 donated costs you close to ¥0 extra (it's absorbed into the flat ¥2,000 self-burden). Above the cap, that same ¥1 costs you close to ¥1, since it only gets the much smaller ordinary income-tax donation deduction, not the enhanced resident-tax special deduction. There's no partial credit or grace band, the line is sharp, which is exactly why estimating conservatively, rather than donating right up to a rounded guess, is the safer approach.
Find your own donation cap before you donate
Enter your salary to see your estimated taxable income, resident tax income levy, and Furusato Nozei cap, plus your net benefit at that cap.
Open the Furusato Nozei CalculatorA confirmed high-earner cap does NOT apply to 2026 donations
Japan's FY2026 (令和8年度) tax reform confirms an absolute ceiling of roughly ¥1.93 million on the special resident-tax deduction for very high earners, this is now enacted policy, not a loose proposal. It applies starting with donations made in 2027 (令和9年分), landing on your FY2028 resident tax bill, and it still does NOT touch donations made during 2026. If your calculated cap sits well above ¥1.93 million because of very high income, this year's donations are unaffected, but build the ceiling into any 2027 donation planning, since someone earning close to ¥100 million a year would otherwise hit roughly ¥4.38 million in donations before the enhanced deduction runs out.
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Frequently asked questions
Can foreign residents and expats in Japan use Furusato Nozei?
Yes, as long as you're a Japanese tax resident who actually pays resident tax (住民税), which in practice means you were registered as a resident in a Japanese municipality on 1 January of the relevant year and have taxable income here. You'll need a My Number (マイナンバー) and a Japanese mailing address to apply, whether you use the One-Stop Special System or a full tax return. If you arrived partway through the year or plan to leave Japan before the deduction lands (it shows up as a resident tax reduction the following year), talk to your municipal tax office first, since leaving the country can mean you never actually receive the resident tax portion of the benefit.
What happens if I donate over my calculated limit?
Everything above your cap stops getting the special Furusato Nozei treatment and becomes a plain donation instead. You still keep the thank-you gift on whatever you donated, and the excess amount still qualifies for the ordinary income-tax donation deduction (a much smaller benefit), but it does NOT get the resident tax special deduction that makes amounts below the cap cost you almost nothing. Concretely: donate exactly at a ¥104,000 cap and your out-of-pocket cost is the flat ¥2,000 self-burden. Donate ¥50,000 over that cap and your out-of-pocket cost jumps to roughly ¥52,000, because that extra ¥50,000 comes back to you only as a small ordinary deduction, not as a near-full credit.
When is the deadline for 2026 Furusato Nozei donations?
Donations must be completed by 31 December 2026, 23:59 Japan time, based on when the donation itself is finalized (not when the thank-you gift arrives). If you're using the One-Stop Special System, each municipality needs your application paperwork to physically arrive by 10 January 2027, so mailing it in the first week of January is cutting it close given New Year postal delays. If you're filing a full tax return instead, you have until roughly 15 March 2027 to declare your donations.
How do I read my 源泉徴収票 (gensen choshu-hyo) to estimate my donation cap?
Your gensen choshu-hyo, the withholding statement your employer issues around December or January, has your gross annual salary (支払金額) printed near the top. That figure is what you plug into a Furusato Nozei calculator as your annual income. It's a snapshot of what already happened this year though, so if your salary is trending meaningfully up or down partway through the year, use your most recent full-year figure as a starting estimate and revisit it once your December pay is settled, since donating based on a stale income figure is one of the more common ways people accidentally overshoot their cap.
Why does the cap calculation feel so much more complicated than a flat percentage of salary?
Because it isn't sized off your salary directly, it's sized to exactly offset what your MARGINAL national income tax rate does NOT already recover through the ordinary donation deduction. Someone in the 20% national bracket needs a different formula multiplier than someone in the 33% bracket, because the special resident-tax deduction is designed to make the two deductions together add up to almost the full donation, no matter which income tax bracket you're in. That's why the formula divides by (1 − 10% − your marginal rate x 1.021) instead of just multiplying your salary by a flat percentage: it's solving for the exact top-up resident tax needs to contribute at your specific bracket.
Does contributing to iDeCo or other deductions change my Furusato Nozei cap?
Yes, and this is one of the most common mistakes: any deduction that lowers your taxable income also lowers your Furusato Nozei cap, because the cap is calculated from your taxable income, not your gross salary. iDeCo (個人型確定拠出年金) contributions, the life insurance premium deduction, the medical expense deduction, dependents, and the home loan tax credit (住宅ローン控除) all shrink your real cap below a salary-only estimate. If you're maximizing iDeCo contributions, run your Furusato Nozei numbers after your iDeCo contributions are accounted for, not before, or you'll plan a donation cap that's too high for your actual tax position that year.
The core idea is simple even though the formula looks intimidating: figure out your cap first, donate at or comfortably under it, and use the One-Stop Special System if you're keeping things to 5 municipalities or fewer. Get the cap wrong, or skip checking it because "it's basically free anyway," and you can end up paying real money for what you assumed was a near-costless donation.
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