Pension corpus & annuity from NPS. The NPS Calculator takes monthly contribution, current age, retirement age, expected return until retirement, share of corpus used to buy an annuity (minimum 40%), annuity rate and returns estimated monthly pension plus corpus at retirement, lump sum withdrawn (tax-free), total contributed. Results update as you type, and the formula is shown under the result so you can repeat it in your own spreadsheet.
Government-backed schemes publish their interest rates quarterly and market-linked funds do not guarantee returns. Enter the current rate for the scheme and treat market-return assumptions as scenarios rather than promises. Use the worked example below to check the maths against your own figures.
How the NPS Calculator works
NPS contributions grow at market returns until 60; at least 40% of the corpus must then buy an annuity that pays the monthly pension, and the rest (up to 60%) can be withdrawn tax-free.
Worked example
With the example values (monthly contribution of ₹5,000, current age of 30, retirement age of 60, expected return until retirement of 10%, share of corpus used to buy an annuity (minimum 40%) of 40%, annuity rate of 6%), the estimated monthly pension is ₹22,793.25; corpus at retirement ₹11,396,626.62, lump sum withdrawn (tax-free) ₹6,837,975.97, total contributed ₹1,800,000.00. Change any figure above and the result updates immediately; use Copy results to paste the summary into a note or email.
Assumptions and limits: Returns and annuity rates are assumptions; NPS values fluctuate with the market.
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Frequently Asked Questions
How is estimated monthly pension calculated?
corpus = SIP future value; pension = corpus × annuity share × annuity rate ÷ 12.
Which figures do I need?
Monthly contribution, current age, retirement age, expected return until retirement, share of corpus used to buy an annuity (minimum 40%), annuity rate. Take them from the same period and the same set of accounts or reports so the ratio is consistent, and check the example values as a guide to the units expected.
Is the interest rate fixed?
Small-savings rates are reviewed by the government every quarter and bank rates change with policy; market-linked schemes have no fixed rate at all. Enter the current rate for your scheme and revisit the result when rates change.
What assumptions does this calculator make?
Returns and annuity rates are assumptions; NPS values fluctuate with the market.






