NPS Calculator

What is an NPS calculator?

An NPS calculator estimates your National Pension System corpus from your age, monthly contribution and expected return, then splits it into a lump sum and a monthly pension. Under PFRDA's current exit rules, non-government subscribers can take up to 80% as a lump sum and must annuitise at least 20%; a corpus up to ₹8 lakh can be withdrawn in full.

How to use the NPS calculator

1. Enter your current age (18 to 75).
2. Enter how much you will contribute every month.
3. Optional: click "Click here" under the form to change the assumptions: the expected return (10% a year to start), the share of the corpus used to buy an annuity (20% to start) and the annuity rate (6% to start).
4. Click Calculate to see your total investment, corpus, lump sum, annuity and projected monthly pension.

How the NPS calculator works

The calculator adds your monthly contributions and grows them at the expected return, compounded monthly, until your account vests. In the All Citizen model that is after 15 years of contributions or at age 60, whichever comes first. If you are 60 or older, it projects to age 75.

Corpus = P × [((1 + r)ⁿ − 1) ÷ r] × (1 + r)

Here P is your monthly contribution, r is the expected yearly return divided by 12, and n is the number of months. The corpus is then split into a lump sum and an annuity. The monthly pension is the annuity amount multiplied by the annuity rate, divided by 12.

NPS calculator example

Suppose you are 30 and contribute ₹5,000 a month, using the calculator's starting assumptions:

Of the ₹20,89,622 corpus, 60% (₹12,53,773) is tax-free at exit. The Income-tax Act, 2025 does not yet spell out how the remaining ₹4,17,924 of the lump sum is taxed, so check before you withdraw it. The monthly pension is taxed as income.

How much should I invest for a ₹50,000 monthly pension?

Work backwards from the annuity. Monthly pension = annuity amount × annuity rate ÷ 12, so at a 6% annuity rate every ₹10,000 of monthly pension needs ₹20 lakh in the annuity. The table shows the monthly contribution that builds that amount at a 10% return, if you use the whole amount to buy the annuity:

If you annuitise only part of the corpus, the corpus has to be larger: at the calculator's starting 20%, five times the annuity amount. Change "Purchase Annuity for" in the assumptions to see your own numbers, or read how to get ₹50,000 a month with NPS.

Lump sum and annuity at exit

Under PFRDA's exit rules for non-government subscribers, at normal exit you can take up to 80% of the corpus as a lump sum and must use at least 20% to buy an annuity. If the corpus is ₹8 lakh or less you can withdraw all of it. Between ₹8 lakh and ₹12 lakh you also have the option of taking up to ₹6 lakh as a lump sum and putting the rest into an annuity or a systematic redemption over at least six years. On a ₹9 lakh corpus, that means up to ₹7.2 lakh under the 80% route or up to ₹6 lakh under the other two.

When these numbers don't apply

• Government-sector subscribers must use at least 40% of the corpus to buy an annuity.
• If you joined NPS after 60, there is no vesting period: you can exit at any time and withdraw a corpus up to ₹12 lakh in full.
• NPS Vatsalya accounts for children follow their own rules; use the NPS Vatsalya calculator instead.

These figures are illustrative projections based on the inputs and assumptions you choose and are not guaranteed. NPS is market-linked, and actual returns will vary. Exit rules are from PFRDA's FAQs on exits and withdrawals for the All Citizen model (March 2026) and tax rules from the Income-tax Act, 2025. Last reviewed 19 October 2026. This isn't tax or investment advice.