How to Claim Blue Return (Aoiro Shinkoku) Tax Deduction in Japan (2026): Step-by-Step Guide for Foreigners to Save ¥650,000 Legally
How to Claim Blue Return (Aoiro Shinkoku) Tax Deduction in Japan (2026): Step-by-Step Guide for Foreigners to Save ¥650,000 Legally "I made ¥5 million freelancing in Tokyo last year and nearly fainted when I saw my first tax bill. A Japanese friend asked why I hadn't filed Aoiro Shinkoku. I had no idea what it was. Once I applied and set up double-entry bookkeeping, my tax bill dropped by over ¥200,000 in a single year." Updated October 2026 | Written by Luna H If you earn income outside a standard Japanese salary — whether as a full-time freelancer, IT contractor, English tutor, or side-hustler — Japan’s tax office (Kokuzeitcho) takes a significant cut. Between National Income Tax (Shotokuzei) and Local Residence Tax (Juminzei), you can easily pay 20% to 30%+ of your net earnings. However, the Japanese government offers a legal tax loophole designed to encourage proper accounting: Aoiro Shinkoku (青色申告 — Blue Return) . By filing under this special status, you ...