International students earning part-time wages in Japan are subject to Japanese individual income tax and municipal inhabitant taxes based on their tax residence status and annual earnings. Tax obligations depend on whether you are classified as a resident or non-resident, your total yearly income after eligible deductions, and where you live on January 1. Understanding these rules ensures you remain compliant while taking full advantage of applicable exemptions.
How are international students classified for Japanese tax in 2026?
Under Japanese tax law, individuals are categorized as either residents or non-residents based on domicile and length of stay. A person who establishes a principal base of life (domicile) or resides continuously in Japan for one year or more is classified as a resident. Non-citizens living in Japan for five years or less within a ten-year period are treated as non-permanent residents.
Residents are taxed on worldwide income, though non-permanent residents are exempt from taxation on foreign-sourced income if it is not paid in or remitted to Japan. However, all compensation earned from working inside Japan qualifies as domestic-sourced income, making it subject to income tax regardless of where the payment is issued. Non-residents who do not meet the one-year residence requirement are taxed solely on Japan-sourced income. Salary received by non-residents for work performed in Japan that is not covered by employer withholding requires filing a tax return at a flat rate of 20.42%, which includes the 2.1% restoration income surtax active through December 31, 2037. Specific treatments may vary under international tax treaties, so students should confirm details with the National Tax Agency.
What are the income tax rates and deductions for part-time earnings?
Japan levies self-assessed income tax on calendar-year earnings using a progressive tax rate scale after subtracting deductions. Employment income receives a automatic deduction calculated according to total wage brackets:
- Up to 1,900,000 JPY: Deduction of 650,000 JPY
- 1,900,001 to 3,600,000 JPY: 30% of employment income plus 80,000 JPY
- 3,600,001 to 6,600,000 JPY: 20% of employment income plus 440,000 JPY
After applying employment deductions, individual income tax rates apply to remaining taxable income:
- 1,000 to 1,949,000 JPY: 5% rate (0 JPY deduction)
- 1,950,000 to 3,299,000 JPY: 10% rate (97,500 JPY deduction)
- 3,300,000 to 6,949,000 JPY: 20% rate (427,500 JPY deduction)
Taxpayers may also utilize up to 16 categories of additional personal exemptions, such as the basic exemption, working student exemption, and dependent exemption. To claim deductions for overseas dependent relatives, supporting documents verifying family relationship and money transfer records must be provided.
Who needs to file an income tax return between February 16 and March 15?
Residents are required to file an annual self-assessed income tax return and pay any remaining tax due between February 16 and March 15 of the following year. However, you generally do not need to submit a return if your total annual income does not exceed your combined deductions, or if you receive salary from only one employer that performs a year-end adjustment, provided your salary is 20 million JPY or less and side income does not exceed 200,000 JPY.
If a non-resident worker leaves Japan without designating an official tax agent to handle tax obligations with the local tax office, an income tax return must be submitted and full tax paid before departing the country.
How does individual inhabitant tax work on January 1?
Individual inhabitant tax consists of prefectural and municipal local taxes assessed on individuals who have a domicile in Japan as of January 1 each year. The tax is calculated based on taxable income earned during the preceding calendar year.
- Income-graded rate: Standard combined rate of 10% (4% prefectural tax and 6% municipal tax).
- Flat-rate component: Standard base of 1,000 JPY for prefectural tax and 3,000 JPY for municipal tax. In addition, a 1,000 JPY forest environment tax is collected annually alongside local taxes.
Taxpayers who file an official income tax return by March 15 are not required to submit a separate municipal inhabitant tax filing. Rates can vary depending on local municipality rules.
Finding a place to stay
When planning to study and work part-time in Japan, securing initial housing is essential after obtaining your Certificate of Eligibility or student visa, well before your arrival. Choosing standard rental housing in Tokyo often involves complex setup procedures, guarantors, and upfront fees. Many newcomers stay in a furnished monthly apartment first to settle in smoothly while completing municipality registration. OHAYO Stay offers furnished monthly apartments and rooms in Tokyo; most homes have a minimum stay of 30 nights (shown on each listing). The monthly price includes electricity, gas, water and Wi-Fi. No guarantor, no key money and no agency fee; booking is online with a passport or ID and a credit card. Having a steady home base ensures you can easily receive tax notices and register your address on time.