Your money. Your numbers. Sorted.
Free calculators for Japanese income tax, resident tax, new NISA, iDeCo, mortgages, consumption tax, and furusato nōzei — tuned to 2026 tax rules.
Plan, don't just calculate
Got a life goal? We'll chain the right calculators for you — buy a home, retire comfortably, cut your tax bill, more.
Loans & EMI
1 calculator
Investment
2 calculators
Tax
4 calculators
Income Tax
Calculate your 2026 Japanese income tax: national tax (shotokuzei), resident tax (juminzei), and the 2.
Take-Home
Convert gross annual salary to net monthly take-home in Japan — deducts social insurance (~15%), national income tax, resident tax, and reconstruction surtax.
Consumption Tax
Add or extract Japanese consumption tax (shōhizei) at the 10% standard rate or 8% reduced rate for food and newspapers.
Furusato Nōzei
Estimate your furusato nōzei (hometown tax) donation cap based on your income.
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Built for people who want the math — without ads begging for their email address.
Accurate to the cent
Every formula matches RBI, SEBI, and IRD standards.
100% private
Every calculation runs in your browser. We never see, store, or transmit your financial details.
Always free
No paywalls, no accounts, no "pro" upgrades. Just the tools you need.