NISA contribution calculator
Estimate future assets from an initial investment and monthly contributions.
Example inputs
Invested principal4,600,000 JPY
Investment gain1,724,888 JPY
Investment gains in NISATax exempt
How it works
The model adds contributions monthly and compounds at an assumed annual rate. It does not account for fees or market volatility.
JPY 30,000 contributed monthly for 20 years gives JPY 7,200,000 of principal before any investment gain.
Questions
Are gains tax-free?
Eligible investment gains within a NISA account are tax-free under applicable rules.
Which return should I use?
No future return is guaranteed. Compare several assumptions.
Figures are estimates. Taxes and investment performance vary.