JapanUpdated for 2026FinanceJapan New NISA Tax-Exempt Investment Calculator 2026 (18M JPY Lifetime Cap)
Calculate compounded portfolio growth and statutory 20.315% capital gains tax savings under Japan's permanent New NISA system (18M JPY lifetime tax-free allowance).
Total NISA Portfolio Balance (Tax-Free)
Total 20.315% Taxes Spared
Calculator Inputs
Total NISA Portfolio Balance (Tax-Free)
Total 20.315% Taxes Spared
Total Principal Invested
Total Capital Gains Growth
Principal vs Gains Breakdown
Based on Act on Special Tax Measures Art. 37-14. Lifetime principal cap of 18,000,000 JPY (max 12,000,000 JPY growth quota).
This calculator is a mathematical model for general financial estimation, planning, and educational guidance. Results depend on your inputs and standard formulas, and do not constitute binding financial, tax, or investment advice. Always consult a qualified professional before making financial decisions.
Calculation Methodology
Tax Savings = Compound Investment Capital Gains × 20.315% (Tax spared compared to standard Tokutei accounts).
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