Tax season will be here before you know it. Are you ready? The real question is: do you actually know how to file your taxes in Japan? If the answer is “no”, then this article is exactly what you need.
Filing taxes, no matter what country you’re in, is never a fun task. Let’s be honest. But that doesn’t make it any less important, especially because if you earn income in Japan, you are required to follow Japanese tax law.
Even as a foreigner, once you earn a source of income in Japan, you’re treated as a tax resident for that income. The good news? The system is actually pretty organized, and the staff at tax offices are very helpful.
This is a simple, easy-to-understand guide to Japanese tax filing for foreigners, breaking down the basics so you can get through tax season without stress, panic, or last-minute chaos.
First things first: when you hear people talk about filing taxes in Japan, they’re usually referring to 確定申告 (kakutei shinkoku).
By filing your tax return properly and on time, you are:
Even if your employer does some of your taxes automatically, there are still many situations where you may need to file on your own.
February 16th to March 15th is when you should file your report for any income earned in 2025.
Whether you choose to file online, in person, or by mail, your tax return must be submitted within this timeframe. This part is very important, so please don’t ignore the dates.
If you are filing only to receive a refund, you should know the Japanese word for tax refund:
還付 (kanpu)
You can file earlier than February 16th AND even after March 15th, though it’s always better to do it earlier than later.
<You can technically file taxes for a specific year up to five years after that tax year ends, but I don’t recommend waiting unless absolutely necessary.>
You typically need to file a tax return in Japan if you fall into one or more of the following categories:
-Dependents
-Medical expenses
-Insurance deductions
-Special tax credits
As someone who has filed my taxes independently for the last three years, I cannot stress this enough: having your documents ready makes everything so much easier.
Make sure you prepare the following:
In Addition:
There are several methods available for filing taxes in Japan. Here are the three most common options used by foreigners.
You can find your local tax office based on your ward or city. When filing in person, expect to spend a couple of hours, especially during peak season. It may be a bit time-consuming, BUT
once you’re done, you’re done, and you can ask questions directly if you’re confused.
E-Tax is Japan’s official online tax filing system. Many people are switching to this method because it’s fast and efficient. It’s much easier because you can do things like:
-Use translation tools
-Upload documents digitally
-Receive confirmation quickly
Once submitted, the system processes your information very smoothly.
If neither in-person nor online filing works for you, you can mail your completed tax return to your local tax office. Just be sure to use registered mail (書留, kakidome), so you have proof that your tax return was sent on time.
Even if you don’t speak Japanese fluently, I personally recommend going to your local tax office at least once. The staff are usually kind, patient, and prepared to help, and many offices have consultation corners specifically for tax filing season.
It’s always better to ask questions directly than risk filing incorrectly.
I really hope this article helped take some of the stress off your shoulders when it comes to tax filing for foreigners in Japan. While taxes may never be fun, they are manageable — especially when you know what to expect.
Japanese tax office staff are generally very helpful, and there are plenty of resources available to guide you through the process.
I’ve also included an extra resource below to help you stay organized:
Until the next article, stay happy, safe, healthy, and please don’t forget to file your taxes on time 🙂
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