Furusato nozei is built around a full tax year, and its benefit does not land all at once. Part of it comes back through income tax for the year you donate, and the rest comes back through resident tax the following June. If you are leaving Japan partway through the year, that split matters a lot, because one half depends on where you are registered on a single date: January 1. Get the timing wrong and you can end up donating and receiving only part of what you expected, even though every donation itself was made correctly and on time.
The January 1 rule
Resident tax (住民税) is not assessed based on where you live when you file, or where you lived for most of the year. It is assessed by the municipality where your 住民票 (resident registration) was on record on January 1 of the assessment year. That municipality bills you for resident tax starting in June, covering income and donations from the previous calendar year.
This is why furusato nozei's resident-tax portion is described as applying "from June of the following year": the deduction is built into the resident tax bill that your January 1 municipality sends you. If you have already left Japan and deregistered your 住民票 before that January 1, there is no municipality to assess you, no resident tax bill to reduce, and no mechanism left to deliver that part of the benefit.
The donation itself still has its own deadline regardless of your travel plans: it must be completed by December 31 to count toward that tax year. Leaving the country does not extend or change this cutoff.
What you keep and what you lose when leaving mid-year
It helps to think of the furusato nozei benefit as two separate pieces rather than one lump refund.
- Income-tax portion: tied to the year you actually made the donation. If you had taxable income in Japan that year, this portion can still be claimed even if you leave the country afterward, because it is settled through an income tax filing rather than a future resident tax bill.
- Resident-tax portion: tied to wherever your 住民票 sits on the following January 1. This is normally the larger share of the total benefit. If you remove your 住民票 before that date, there is no resident tax assessment to apply it against, and this portion is simply lost. It is not carried over, refunded separately, or transferred anywhere else.
In practice, this means someone who donates in, say, October and leaves Japan for good in November of the same year will likely receive only the income-tax portion of the benefit, not the full amount they would have gotten had they stayed registered through the following January 1.
How to file when leaving
The ワンストップ特例 (one-stop exception) is not an option here. It works by routing the entire benefit through your resident tax the following year, with no income tax filing at all. Since a departing resident may not have a resident tax assessment to route it through, using one-stop can mean losing the benefit altogether rather than just the resident-tax half.
The safer route when leaving is 確定申告, Japan's standard income tax return, since it is what actually captures the income-tax portion. There are a few ways to handle the filing depending on your timeline:
- If you are still in Japan when filing season arrives, file a regular 確定申告 as usual.
- If you are leaving before you would normally file, you can submit a 準確定申告, a return filed for the year up to your departure, completed before you leave.
- If you cannot file before departure, you can appoint a 納税管理人 (tax representative) in Japan, who then files the 確定申告 on your behalf after you have gone.
For a side-by-side comparison of how the one-stop system and the tax-return route differ more generally, see our page on one-stop vs tax return. If your move is already further along, our fuller leaving-Japan guide walks through the practical steps in more detail, including how to line up a 納税管理人.
Should you still donate in a departure year?
It depends on how much of the year you will remain a registered resident. If your 住民票 will still be in Japan on January 1 of the following year, a donation made now behaves normally: both portions apply as expected. If you know you will deregister before that date, treat any donation as delivering only the income-tax portion, and size your expectations accordingly rather than donating up to your usual full-benefit limit.
Before donating in a year you plan to leave, it is worth running your numbers through the calculator to see what your income-tax-only benefit looks like compared to a normal full year, and deciding from there whether the donation is still worth making. If you do go ahead, plan for a 確定申告 rather than one-stop, and arrange a 準確定申告 or a 納税管理人 well before your departure date so the filing does not get missed in the rush of moving.
This page is general information, not individual tax advice. For decisions, confirm with an official source or a licensed tax accountant (税理士).