How to File Taxes in Japan as a Foreigner (2026): Kakutei Shinkoku Complete Guide
Quick Answer Who must file: Freelancers, side-income earners (¥200,000+/year extra income), those with 2+ employers, people who left mid-year, and anyone claiming deductions beyond the standard year-end adjustment. Who doesn’t need to file: Salaried employees with one employer — your company handles it via nenmatsu chōsei. Deadline: February 16–March 15 (for previous year’s income). Biggest mistake foreigners make: Not knowing about the second-year residence tax spike (housing allowance stops, ¥100,000–300,000 bill arrives in June). ...