Tax Deductions Available in Japan for Foreigners

Living and working in Japan means navigating the Japanese tax system, which can feel overwhelming at first. The good news is that foreign residents in Japan are entitled to the same tax deductions as Japanese citizens. Understanding these deductions can save you hundreds of thousands of yen each year. This guide breaks down every major tax deduction available to foreigners in Japan and how to claim them.

For a broader overview of taxes in Japan, check out our Complete Guide to Taxes in Japan for Foreigners.

Understanding Your Tax Residency Status

Before diving into deductions, you need to understand your tax residency status, as it determines which deductions you can claim. Japan classifies taxpayers into three categories: non-residents, non-permanent residents, and permanent residents.

If you have lived in Japan for less than one year, you are generally considered a non-resident and taxed at a flat rate of 20.42% on Japan-sourced income with no deductions available. Once you have resided in Japan for one year or more, you become a tax resident and gain access to the full range of deductions. Permanent residents (those who have lived in Japan for five or more years out of the past ten) are taxed on worldwide income.

Most foreign workers on work visas who stay beyond one year qualify as tax residents. This is the status that unlocks all the deductions described below. For more on visa categories, see our Japan Visa and Immigration Guide.

Income-Based Deductions

These deductions are automatically applied based on your earnings and form the foundation of tax savings for salaried workers.

Employment Income Deduction (Kyuyo Shotoku Kojo)

If you are a salaried employee, you receive an automatic deduction from your gross salary before taxes are calculated. This deduction is meant to account for work-related expenses and varies by income level.

Starting from 2025 income, the minimum employment income deduction increased to ¥650,000, providing additional savings for lower-income earners.

Basic Deduction (Kiso Kojo)

Every taxpayer receives a basic deduction, which was raised to ¥580,000 for 2025 income (previously ¥480,000). This deduction phases out for high earners with total income exceeding ¥24 million and is completely eliminated above ¥25 million.

Social Insurance Premium Deductions

One of the most valuable deductions for foreign workers is the social insurance premium deduction. All premiums you pay for health insurance, pension (kosei nenkin or kokumin nenkin), unemployment insurance, and nursing care insurance are fully deductible from your taxable income.

For salaried employees, these deductions are automatically applied through payroll. If you are self-employed and pay national health insurance and national pension yourself, you can deduct the full amount when filing your tax return.

This deduction alone can reduce your taxable income by ¥500,000 to ¥1,500,000 or more per year, depending on your salary. To understand more about managing your finances in Japan, visit our Banking and Finance Guide.

Family-Related Deductions

Spouse Deduction (Haigusha Kojo)

If your spouse earns below a certain threshold, you can claim a spouse deduction worth up to ¥380,000 (or ¥480,000 if your spouse is 70 or older). Your own income must be below ¥10,000,000 to qualify, and your spouse's income must be below ¥480,000.

There is also a special spouse deduction (haigusha tokubetsu kojo) for cases where your spouse earns slightly more, up to ¥1,330,000 in income. The deduction amount gradually decreases as your spouse's income increases.

Dependent Deduction (Fuyou Kojo)

You can claim deductions for each qualifying dependent you financially support. The amount varies by the dependent's age:

Foreign residents can claim dependents living overseas, but you must provide proof of financial support such as remittance records. This is particularly relevant for foreigners sending money to family in their home country. For more about family life in Japan, see our Guide to Raising Children in Japan.

Insurance Premium Deductions

Life Insurance Premium Deduction

Premiums paid for life insurance policies are deductible, with deductions split into three categories: general life insurance, nursing care insurance, and individual annuity insurance. Each category allows a maximum deduction of ¥40,000 for income tax purposes, with a combined maximum of ¥120,000 across all three categories.

Earthquake Insurance Premium Deduction

If you pay earthquake insurance on your residence, you can deduct up to ¥50,000 per year. Given Japan's earthquake risk, many residents carry this insurance, making it a common deduction. For more about finding housing in Japan, check our dedicated guide.

Medical Expense Deduction

If your total medical expenses for the year exceed ¥100,000 (or 5% of your income if that is lower), you can deduct the excess amount up to a maximum of ¥2,000,000. This includes doctor visits, hospital stays, prescription medications, dental work, and even transportation costs to medical facilities.

Keep all your receipts throughout the year. Expenses covered by insurance cannot be claimed. Japan's healthcare system is excellent but costs can add up, so this deduction is worth tracking. Learn more in our Healthcare Guide for Foreigners.

There is also a simplified medical expense deduction (self-medication tax system) where you can deduct up to ¥88,000 for over-the-counter medications if you participate in preventive health checkups.

Tax-Advantaged Investment and Savings Programs

Furusato Nozei (Hometown Tax Donations)

Furusato Nozei is one of the most popular tax benefits in Japan. You make donations to local governments across Japan and receive both a tax deduction and thank-you gifts (often regional specialties like premium beef, seafood, or rice). Donations exceeding ¥2,000 are deductible, with the maximum limit based on your income and family situation.

For a worker earning ¥5,000,000 annually, the deduction limit is approximately ¥60,000. You essentially pay ¥2,000 out of pocket and receive gifts worth far more in return. Many foreigners in Japan take advantage of this system through websites like Furusato Choice or Satofull.

iDeCo (Individual Defined Contribution Pension)

iDeCo contributions are fully deductible from your taxable income. Company employees can contribute up to ¥23,000 per month (¥276,000 per year), and investment gains within the account are tax-free until withdrawal at age 60. Self-employed individuals can contribute up to ¥68,000 per month.

NISA (Tax-Free Investment Account)

While NISA does not provide an income tax deduction, investment profits within a NISA account are completely tax-free. The current Shin NISA program offers a lifetime investment limit of ¥18,000,000 with no time restrictions. This is a powerful wealth-building tool for foreigners planning a longer stay in Japan.

Housing Loan Deduction (Jutaku Loan Kojo)

If you purchased a home in Japan using a mortgage, you may qualify for the housing loan deduction. This is a tax credit (not just a deduction) equal to 0.7% of your remaining mortgage balance, available for up to 13 years for new homes and 10 years for existing homes.

For a mortgage balance of ¥30,000,000, this credit would be ¥210,000 per year directly subtracted from your tax bill. This is one of the most significant tax benefits available and applies to foreign residents who own property in Japan. For details about the housing market, see our Guide to Finding Housing in Japan.

How to Claim Your Deductions

There are two main ways to claim tax deductions in Japan:

Year-End Adjustment (Nenmatsu Chousei): If you work for a single employer, your company handles most deductions automatically in December. You fill out declaration forms for insurance premiums, dependents, and spouse deductions. No separate tax filing is required for these deductions.

Final Tax Return (Kakutei Shinkoku): You must file a tax return if you want to claim medical expense deductions, the first year of housing loan deduction, furusato nozei (for more than five municipalities), or if you have multiple income sources. The filing period is typically February 16 to March 15 for the previous year's income. You can file online using e-Tax or visit your local tax office (zeimusho).

For more practical tips on managing finances and daily expenses in Japan, check out Living in Nihon and For Work in Japan for employment-related tax guidance. You can also find career transition resources at Ittenshoku.

Common Mistakes Foreigners Make with Tax Deductions

Many foreigners in Japan miss out on legitimate deductions simply because they do not know about them. Here are the most common mistakes:

• Not claiming overseas dependents: You can claim family members abroad as dependents if you financially support them, but you need remittance proof.
• Ignoring Furusato Nozei: This program is essentially free money in the form of gifts, yet many foreigners never use it.
• Not filing for medical expenses: If you had significant medical costs, filing a return can result in a substantial refund.
• Leaving Japan without filing: If you leave Japan mid-year, you should file a tax return or appoint a tax representative to claim your deductions and get any refund owed.
• Not keeping receipts: Japan's tax system relies heavily on documentation, so save all insurance certificates, medical receipts, and donation receipts.

Understanding your tax deductions is an essential part of managing your cost of living in Japan. For additional reference, you can consult the PwC Japan Individual Deductions guide and the Japan Guide tax overview for official and up-to-date information.