NPS Calculator India 2026: Corpus, Lump Sum, and Monthly Pension

An NPS calculator helps estimate how National Pension System contributions may grow by retirement age and how the final corpus may be split between lump sum withdrawal and annuity purchase.

Use the NPS Calculator India to enter current age, retirement age, contribution amount, current NPS corpus, expected return, lump sum percentage, annuity percentage, and expected annuity rate.

NPS corpus formula

The calculator estimates NPS corpus month by month.

Monthly return rate = expected annual return / 12 / 100

Each month:

1. Existing corpus grows by the monthly return rate.
2. Monthly equivalent contribution is added.
3. The balance carries forward to the next month.

If yearly contribution mode is selected:

Monthly equivalent contribution = yearly contribution / 12

This keeps monthly and yearly contribution modes comparable.

Lump sum and annuity split

At retirement, the estimated corpus is split using the entered percentages.

Lump sum withdrawal = retirement corpus x lump sum withdrawal percentage

Annuity corpus = retirement corpus x annuity purchase percentage

Estimated monthly pension = annuity corpus x annuity rate / 12

The calculator caps the combined exit split at 100%. If annuity and lump sum percentages exceed 100%, the lump sum share is capped after preserving the annuity share.

Example

Assume:

• Current age: 30
• Retirement age: 60
• Monthly contribution: Rs 10,000
• Expected annual return: 10%
• Lump sum withdrawal: 60%
• Annuity purchase: 40%
• Expected annuity rate: 6%

The calculator estimates retirement corpus, lump sum withdrawal, annuity corpus, and monthly pension from the annuity corpus.

NPS vs PPF vs FD

NPS is retirement-focused and market-linked. PPF is a long-term government-backed savings scheme. FD is a fixed deposit product with simpler payout or maturity estimates.

Read PPF vs NPS vs FD to compare lock-in, risk, tax treatment, liquidity, and use cases.

Use the PPF Calculator and FD Calculator to compare other savings options.

For a tax-saving and retirement-focused decision flow, use the PPF vs NPS vs FD Calculator and read PPF vs NPS vs FD for Tax Saving and Retirement.

Retirement planning angle

NPS is one part of retirement planning. To estimate total retirement corpus needed, use the Retirement Calculator India. It considers monthly expenses, inflation, life expectancy, and expected returns before and after retirement.

Assumptions

• Contributions are treated as monthly equivalent deposits.
• Expected return remains fixed during accumulation.
• Annuity rate remains fixed for the monthly pension estimate.
• NPS returns, annuity rates, product charges, exit rules, tax treatment, and withdrawal rules can change.
• This calculator does not model equity/debt allocation, employer contribution, Tier II account, or detailed tax outcomes.

Disclaimer

The information and calculations provided on this website are for general informational and educational purposes only. Results are estimates based on user inputs and simplified assumptions and may not reflect actual investment performance, annuity payouts, taxes, inflation, expenses, or retirement needs. This content does not constitute tax, legal, accounting, or financial advice. Consult a qualified financial advisor, accountant, or the relevant financial institution before making financial decisions.