If you live and work in Japan, you are required to pay 住民税 (jūminzei) — commonly called municipal tax or resident tax. The good news is that, as a foreign resident, you are entitled to the same tax deductions as Japanese nationals. Many people miss out simply because they are not aware these deductions exist. This guide walks you through the most common eligible expenses, who qualifies for exemptions, and exactly how to apply — so you can keep more of your hard-earned money.
What Is Municipal (Resident) Tax in Japan?
Municipal tax is a local tax paid to your city, town, or ward office. It is calculated based on your income from the previous year. So the tax bill you receive in June covers income you earned from January to December of the year before. It is separate from national income tax, which is filed via a 確定申告 (kakutei shinkoku) tax return or handled automatically by your employer through year-end adjustment (年末調整, nenmatsu chōsei).
As a foreign resident registered in Japan, you are subject to this tax if you were living here on 1 January of the tax year — regardless of your nationality or visa type.
Who May Be Exempt from Municipal Tax?
Some foreign residents may qualify for a full or partial exemption. This is a general guide — always confirm your situation with your local ward or city office, as rules can vary by municipality.
- Very low income: If your annual income falls below a certain threshold set by your municipality (often around the minimum living cost standard), you may be fully exempt. The exact figure varies by city and household size.
- Dependants in your household: Having a spouse or children registered as dependants can lower the income threshold for exemption and reduce your taxable amount.
- Diplomatic status: Certain visa categories linked to diplomatic or consular roles may be exempt under treaty arrangements.
- Short-term stay: If you arrived in Japan after 1 January of the relevant tax year, you are not liable for municipal tax for that year.
Common Tax Deductions Available to Foreign Residents
Deductions reduce the amount of income that is taxed. Here are the main ones you should know about:
1. Basic Deduction (基礎控除)
Everyone is entitled to a basic deduction. The exact amount depends on your total income level. This is applied automatically, so you do not need to do anything special to claim it.
2. Dependent Deduction (扶養控除)
If you financially support family members — a spouse, children, parents, or siblings — you may be able to claim a dependent deduction. Importantly for foreign residents, overseas dependants can also qualify, but since 2023, stricter documentation is required. You will need to provide official proof such as:
- Family registry documents (translated if not in Japanese)
- Proof of remittance showing you are sending money to support them (bank transfer records or receipts from services such as Wise or Remitly)
- A residence certificate or equivalent document for each dependant
Keep your transfer records organised throughout the year — they are essential evidence when claiming overseas dependent deductions.
3. Social Insurance Deduction (社会保険料控除)
Premiums you pay for health insurance (健康保険), pension (厚生年金 or 国民年金), and long-term care insurance are fully deductible. If you pay these yourself (common for self-employed residents or those enrolled in National Health Insurance), make sure you keep your payment receipts.
4. Life Insurance Deduction (生命保険料控除)
If you pay premiums for a Japanese life insurance, medical insurance, or private pension plan, a portion of those premiums qualifies as a deduction. The insurer will send you a certificate (控除証明書) each autumn — do not throw it away.
5. Medical Expense Deduction (医療費控除)
If your household's out-of-pocket medical costs exceeded a threshold during the year (generally 100,000 yen or 5% of your total income, whichever is lower), you can deduct the amount above that threshold. This includes hospital fees, prescription costs, dental treatment, and even some transport costs to medical facilities. Keep all receipts.
6. Earthquake Insurance Deduction (地震保険料控除)
Premiums paid on earthquake insurance for your home in Japan are partially deductible. Your insurer will provide a certificate for this as well.
7. Furusato Nōzei (ふるさと納税 — Hometown Tax Donation)
This popular scheme lets you donate to municipalities across Japan and receive local products in return. The donated amount (minus a flat 2,000 yen fee) is deducted from your income and resident tax. Foreign residents are fully eligible. If you use the One-Stop Exception system (ワンストップ特例), you can skip filing a full tax return for this deduction — but only if you are not already required to file one for other reasons.
How to Apply: Step-by-Step
- Check if your employer handles it: If you are a salaried employee, your company does a year-end adjustment (年末調整) in November or December. Submit any deduction certificates (insurance, dependent documents) to your HR or payroll department by their deadline — usually late October or November.
- File a tax return if needed: If you are self-employed, have multiple income sources, left your company mid-year, or want to claim deductions your employer cannot process (such as medical expenses or furusato nōzei beyond the one-stop limit), file a 確定申告 at your local tax office (税務署) between mid-February and mid-March.
- Gather your documents: Prepare your My Number card (マイナンバーカード), income records (源泉徴収票 from your employer), all deduction certificates, receipts for medical costs, and proof of any overseas remittances for dependants.
- Complete the forms: You can file online via the e-Tax system (available in some languages) or use the paper forms available at the tax office. Staff at the tax office are generally patient — bring a dictionary or translation app if your Japanese is limited.
- Municipal tax is assessed automatically: Once national tax authorities share your income data, your city or ward office will calculate your municipal tax and send a bill (usually in June). You do not file a separate form for municipal tax unless instructed to do so.
Useful Documents to Prepare
| Document | Where to Get It |
|---|---|
| 源泉徴収票 (withholding tax slip) | Your employer (issued in December or January) |
| Insurance deduction certificates | Sent by your insurer each autumn |
| Medical expense receipts | Keep originals throughout the year |
| Remittance records for overseas dependants | Bank statements or transfer service history (e.g., Wise, Remitly) |
| My Number card or notification slip | Issued by your municipality |
| Residence certificate of overseas dependant | Obtained from the home country and translated |
Summary: Make the Most of Your Tax Deductions in Japan
Navigating the Japanese tax system as a foreign resident can feel daunting, but the rules around tax deductions for foreigners in Japan are actually quite fair and accessible. The key steps are simple: know which deductions apply to your situation, collect the right documents throughout the year, and either submit them to your employer for the year-end adjustment or file a tax return yourself.
Do not let a language barrier stop you from claiming what you are entitled to. Tax offices often have multilingual support materials, and many municipalities offer consultation services. If your situation is complex — for example, you have overseas dependants or run your own business — consider consulting a licensed tax accountant (税理士, zeirishi) who has experience with foreign residents.
This article is general practical information and not legal or financial advice. Tax rules and thresholds change, so always confirm the latest details on the National Tax Agency website or at your local tax office before filing.
You have already taken the important first step by looking into this — keep going, and filing season will be much less stressful than you expect.