National Pension Scheme Calculator - Corpus and Pension Split

A national pension scheme calculator estimates how regular NPS contributions could grow into a retirement corpus, then splits that corpus into an estimated lump sum and annuity-based monthly pension. Use it when you are choosing a monthly contribution, deciding whether to raise contributions each year, comparing retirement ages, or checking whether a planned annuity share can support the pension income you want.

• • Set a monthly contribution: Enter the amount you can contribute now and see whether the projected corpus is close to your retirement target.
• • Test yearly step-ups: Increase the annual contribution growth rate to model salary-linked increases without rebuilding the estimate by hand.
• • Compare exit ages: Move the retirement age up or down to see how extra contribution years and compounding change the result.
• • Plan the annuity split: Change the annuity purchase percentage and annuity rate to estimate monthly pension versus available lump sum.

The result is a planning estimate, not an account statement. NPS is market-linked, so actual returns depend on your pension fund, asset allocation, market performance, charges, contribution timing, and the annuity product available when you exit. Treat the output as a scenario you can revise, not as a promised maturity value.

Compare several assumptions side by side. A higher contribution, longer term, or annual step-up often matters more than a small change in annuity rate, while the pension estimate depends directly on the corpus share converted into annuity income.

If you want a retirement estimate outside the NPS-specific annuity split, the Retirement Savings Calculator can model a broader savings target.

The calculation compounds each monthly contribution from the month it is made until the selected exit age. If you enter an annual increase, the monthly contribution rises once each contribution year. The final corpus is then split between the lump sum and the annuity purchase amount.

• C_m: Monthly contribution for month m, after any annual step-up.
• r: Expected annual NPS return, converted to a monthly rate.
• n: Total number of contribution months between current age and exit age.
• annuity%: The share of the projected corpus used to purchase annuity income.
• annuity rate: The assumed yearly payout rate applied to the annuity corpus.

For example, suppose you are 30, contribute ₹5,000 per month, increase that contribution by 5% each year, exit at 60, assume a 9% annual return, use 40% of the corpus for annuity purchase, and assume a 6% annuity rate. The model sums 360 monthly contributions, each compounded to age 60.

That scenario produces an estimated corpus of about ₹1,48,59,176.56. Total modeled contributions are about ₹39,86,330.85, estimated investment gain is about ₹1,08,72,845.71, the annuity corpus is about ₹59,43,670.63, the lump sum is about ₹89,15,505.94, and the estimated monthly pension is about ₹29,718.35.

According to Investor.gov Compound Interest Calculator, compound-growth projections can use monthly contribution, length of time in years, and estimated annual interest rate as core inputs.

To isolate the compounding formula without NPS withdrawal rules, compare the contribution growth in the Future Value Calculator.

Four ideas explain most of the output. Review them before changing assumptions, because the same projected corpus can produce very different cash flow depending on the annuity split and annuity rate.

Read the results by separating accumulation from distribution. Contributions, age, step-up, and expected return build the corpus. The annuity percentage and annuity rate turn part of that corpus into monthly pension.

For a deeper look at turning a balance into income, the Annuity Payout Calculator focuses on payout behavior after the corpus is set.

Start with conservative assumptions, then adjust one input at a time. This makes it easier to see whether the result changes because of contribution behavior, return assumptions, or the annuity split.

1. 1 Enter your current age: Use completed years, not your next birthday.
2. 2 Choose the exit age: Enter the age when you expect contributions to stop and the corpus to be available for withdrawal or annuity purchase.
3. 3 Add the monthly contribution: Use the amount you expect to contribute regularly to NPS, including employee and voluntary amounts if you want a combined estimate.
4. 4 Set return and step-up assumptions: Enter the expected annual NPS return and any yearly increase in contributions.
5. 5 Set annuity assumptions: Enter the corpus percentage used for annuity purchase and the expected annual annuity rate.
6. 6 Compare the outputs: Review corpus, lump sum, annuity corpus, monthly pension, total contribution, and estimated gain together.

A 35-year-old who can contribute ₹8,000 per month might first use a 0% annual step-up, then test 5% and 10% step-ups. If the monthly pension remains low, compare whether a higher contribution, later exit age, or larger annuity share is more realistic for the household budget.

When the monthly NPS contribution needs to fit beside other savings goals, the Savings Plan Calculator helps compare recurring deposits toward a target.

This national pension scheme calculator is built for decision support. It will not replace official statements or regulated advice, but it can make NPS planning more concrete before you change a contribution or speak with an adviser.

• • Shows the corpus and income split: You can see both the lump sum and the estimated monthly pension instead of looking only at a maturity amount.
• • Makes step-ups visible: Annual contribution increases are hard to judge mentally. The calculator shows their long-term effect on corpus and pension.
• • Tests retirement-age tradeoffs: Changing the exit age shows the combined effect of more contributions and more compounding months.
• • Separates return from annuity assumptions: You can lower expected return or annuity rate to see whether the plan still works under less favorable assumptions.
• • Supports contribution reviews: Use the result during annual salary or budget reviews to decide whether your NPS contribution should rise.

The most practical benefit is comparison. Run a base case, a cautious case, and an optimistic case, then focus on the range rather than one number. If a plan works only at a high return or high annuity rate, the contribution target may need attention.

For a wider retirement readiness view that includes expenses and savings beyond NPS, use the Retirement Calculator.

Several assumptions can move the result materially. Check these factors before treating the output as a plan.

• • The calculator does not retrieve live NPS fund returns, account balances, charges, tax treatment, or insurer annuity quotes.
• • The model applies a constant expected return and constant annuity rate, so it cannot capture year-by-year market volatility or product changes.
• • If you are near exit, use official CRA records and current PFRDA rules before making a withdrawal or annuity decision.

For many users, the annuity percentage is the most rule-sensitive input. The default may not fit every subscriber type. For example, Government Sector normal exits have historically required a higher minimum annuity share than the revised All Citizen and Corporate normal-exit rule. You can model either case by changing the annuity purchase percentage.

A larger lump sum is not always better. A lower annuity purchase amount can raise liquidity at exit, but it can also reduce predictable monthly pension. Review household expenses, other retirement assets, health costs, and survivor needs before choosing a scenario.

According to PFRDA exit regulation press release, All Citizen Model and Corporate Sector normal exits allow up to 80% lump sum and require at least 20% annuity, while Government Sector normal exits remain up to 60% lump sum and at least 40% annuity.

According to PFRDA All Citizen Model, Tier I is the default pension account, subscribers may make unlimited contributions with no upper limit, and contributions are invested according to the selected pension fund and asset allocation recorded with the CRA.

If annuity pricing is the main question, the Annuity Calculator gives a more general way to examine annuity assumptions.