Japan Tax Forecast

Japan Tax Forecast helps foreign residents in Japan understand their real take-home pay — including the resident tax that catches so many people off guard a year later. Enter your salary, bonus, age, residency timing, social insurance, dependents and any side income, and get a clear, plain-English estimate of what actually lands in your bank account. WHAT YOU CAN DO - See your estimated monthly take-home after income tax, resident tax and social insurance - Forecast next year's "resident tax shock" on a friendly timeline, and how much to save each month - Model side income — see the extra tax and what to set aside, with a slider from 0 to custom - Get a cautious read on your tax-residency situation as a foreigner (non-conclusive) - Compare scenarios side by side: a new job offer, employee vs freelancer, staying vs leaving Japan - Estimate your furusato nozei limit and what it really costs you - Save scenarios and export a clean PDF or text summary WHY RESIDENT TAX SURPRISES PEOPLE Resident tax is billed on last year's income, usually starting around June of the following year. Your first year in Japan it's often near zero — then it kicks in and your take-home drops. This app shows you when and by how much, so there are no surprises. BUILT FOR FOREIGN RESIDENTS First-year-in-Japan modelling, side income, overseas-income flags, leaving-Japan scenarios, and a Learn section that explains income tax vs resident tax, revenue vs income, when you may need to file, and what to prepare for an accountant. FREE & PRO Free: basic take-home estimate, basic resident-tax estimate, one saved scenario. Pro: unlimited scenarios, the side-income simulator, the resident-tax shock forecast, the foreigner tax wizard, scenario comparison, export, and detailed explanations. PRIVATE BY DESIGN No account, no backend, no analytics. Your scenarios stay on your device unless you choose to export them. IMPORTANT This app provides educational estimates only and is not tax, legal, immigration, or financial advice. Tax outcomes vary by municipality and individual circumstances. Confirm important decisions with the National Tax Agency, your municipality, employer, or a qualified tax professional. Estimates are based on tax rule version 2026-JP-MVP. SUBSCRIPTION INFORMATION Pro subscriptions renew automatically until cancelled. Payment is charged to your Apple Account at confirmation. Manage or cancel in your Apple Account settings. Prices and billing periods are shown before purchase. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Additional Terms: https://kamiumamama.com/jptaxforecast/terms/ Privacy Policy: https://kamiumamama.com/jptaxforecast/privacy/