NPS Calculator — Corpus, Lump Sum and Pension under the 2025 Exit Rules

How to use the NPS calculator

1. Enter your Monthly contribution to NPS.
2. Enter your Current age and your Exit age.
3. Enter an Expected return (per year). This is your assumption about how your NPS investments will grow.
4. If you plan to raise your contribution every year, enter the Yearly increase in contribution in per cent.
5. Choose your Subscriber type: All Citizen / corporate (up to 80% lump sum) or Government sector (up to 60% lump sum).
6. Enter the Lump sum you take in per cent and an Annuity rate, then read the corpus, the lump sum and its tax-free part, the amount used for an annuity and the estimated monthly pension. The table shows your corpus at every age.

What it does and when to use it

The National Pension System is a long-term retirement scheme regulated by the Pension Fund Regulatory and Development Authority (PFRDA). You contribute during your working life. At exit, part of the corpus can be taken as cash and the rest must buy an annuity, which pays a regular pension.

This calculator answers three questions:

• How big could my corpus be? It depends on how much you put in, for how long, and the return.
• How much can I take as cash, and how much of it is taxed? That depends on your subscriber type and the share you choose.
• What pension could the rest buy? That depends on the annuity rate when you retire.

Use it to set a monthly contribution, to see what a yearly step-up does, or to compare taking 60% and 80% as a lump sum. For a wider retirement plan that includes other savings, try the Retirement Savings Calculator. To compare NPS with a market-linked mutual fund plan, the Step-up SIP Calculator uses similar inputs. To see how much of the corpus comes from compounding alone, try the Compound Interest Calculator.

NPS exit rules used by the calculator

These come from the PFRDA press release of 19 December 2025 on amendments to the NPS exit and withdrawal regulations. Older articles may still show a 60% / 40% split for everyone.

Tax on the lump sum: Schedule II of the Income-tax Act 2025 exempts a payment from the NPS Trust on closure up to 60% of the amount payable. A non-government subscriber who takes 80% therefore has 20% of the corpus that is taxable. The calculator shows this split.

How it works

The calculator assumes you pay at the start of every month and that the return is earned monthly:

• Monthly rate i = yearly return ÷ 12 ÷ 100
• Each month: corpus = (corpus + contribution) × (1 + i)
• After every 12 months the contribution rises by the yearly increase you enter.

At the exit age:

• Lump sum = corpus × the lump-sum share (capped at 80% or 60% for your subscriber type)
• Annuity amount = corpus − lump sum
• Tax-free lump sum = the smaller of the lump sum and 60% of the corpus
• Monthly pension = annuity amount × annuity rate ÷ 12 ÷ 100

The pension figure is a simple estimate: it assumes an annuity that pays the same yearly rate on the amount you use, for life. Real annuities come in several types and pay different rates. All of the maths runs in your browser.

Worked examples

All results are from the calculator.

1. ₹10,000 a month from 30 to 60, at 10%, taking 60%. You contribute ₹36,00,000 over 30 years. The Corpus at exit: ₹2,27,93,253.24. A 60% lump sum is ₹1,36,75,951.95, all of it tax-free. The remaining ₹91,17,301.30 buys an annuity, and at 6% the Estimated monthly pension: ₹45,586.51.

2. The same saver taking 80%. As a non-government subscriber you can take ₹1,82,34,602.59 as cash. The first 60% of the corpus is tax-free, so the Taxable part of the lump sum: ₹45,58,650.65. Only ₹45,58,650.65 is left for the annuity, so the pension halves to ₹22,793.25 a month. More cash now means less income later, and more tax.

3. A government employee, ₹5,000 a month from 35 to 60, rising 5% a year, at 9%. Contributions grow from ₹5,000 to over ₹16,000 a month and total ₹28,63,625.93. The Corpus at exit: ₹86,61,460.31. At the 60% limit, ₹51,96,876.18 is a tax-free lump sum and ₹34,64,584.12 buys an annuity paying ₹17,322.92 a month at 6%.

4. A late start: ₹2,000 a month from 45 to 60, at 8%. You contribute ₹3,60,000 and the corpus reaches ₹6,96,690.29. As this is below ₹8 lakh, the calculator notes: A corpus of ₹8 lakh or less can be withdrawn in full at normal exit.

Choosing between 60% and 80%

Taking 80% gives you more control over your money, but it has two costs. The part above 60% of the corpus is taxed, and a smaller annuity means a smaller guaranteed pension. If you have other income in retirement, more cash may suit you. If the NPS pension will be your main income, a larger annuity may be safer. Run both in the calculator and look at the monthly pension, not just the lump sum.

Limits and tips

• Returns are not guaranteed. NPS is market-linked. A steady 10% every year is a simplification; real returns go up and down.
• One return for the whole period. Some investment choices move money from equity to bonds as you get older, which can lower the return near the end. Enter a lower rate to allow for this.
• Annuity rates change. The pension estimate depends heavily on the rate you enter. A 1% change in the annuity rate changes the pension by about a sixth at these levels.
• Not covered: early exit, partial withdrawals, death benefits, fund charges and the tax on your pension. Check the PFRDA regulations or your point of presence for these.
• Inflation. ₹45,000 a month in 30 years will buy much less than it does today. Use the Inflation Calculator to see it in today’s money.