About Japan Tax Calculator
Japan Tax Calculator is a free, open resource dedicated to helping employees, freelancers, and business owners understand and estimate their tax obligations in Japan. We cover income tax (所得税), resident tax (住民税), social insurance premiums (社会保険料), and more.
Our Mission
Navigating the Japanese tax system can be daunting — especially for foreign residents, freelancers switching from employment, or anyone filing taxes for the first time. Official resources are often only available in Japanese, and the rules around deductions, social insurance, and filing can be complex.
We built Japan Tax Calculator to bridge that gap. Our goal is to provide accurate, up-to-date tax estimates and plain-language explanations so that anyone working in Japan can make informed financial decisions — without needing to read through hundreds of pages of National Tax Agency (国税庁) documentation.
What We Offer
Tax Calculator
Our free tax calculator estimates your income tax, resident tax, and social insurance premiums for FY2026. It supports both employees and self-employed individuals, including Blue Return (青色申告) filers.
Tax Guides & Articles
Our comprehensive guides cover everything from freelancing in Japan to essential deductions, e-Tax filing, and visa-related tax implications.
Built for Everyone in Japan
Whether you're a salaried employee (会社員), a freelancer (個人事業主), or considering incorporating a company, our tools and guides are designed to help you understand your tax situation clearly.
Accuracy & Transparency
Our calculations are based on official tax rates published by Japan's National Tax Agency and local government sources. We update our rates and logic every fiscal year and clearly note when estimates may vary by municipality.
Our Expertise
Japan Tax Calculator is maintained by a team with direct experience navigating the Japanese tax system — as both taxpayers and professionals. Our content is informed by official NTA (国税庁) publications, tax accountant (税理士) guidance, and years of hands-on experience with Japanese tax filing for individuals and businesses.
We regularly review and update our calculator logic and articles to reflect the latest tax law changes, rate adjustments, and policy updates from the Japanese government.
Important Disclaimer
The information and calculations provided on this site are for general reference and educational purposes only. They do not constitute professional tax, legal, or financial advice. Tax obligations vary based on individual circumstances, municipality, and specific provisions that may apply to your situation. Always consult a certified tax accountant (税理士) for official tax advice. See our Terms of Service and Privacy Policy for more details.
Ready to estimate your taxes?
Try our free calculator or explore our tax guides.