NPS Calculator: Pension Corpus, Lumpsum & Monthly Pension

What the PlanMyReturns NPS Calculator Does

This tool estimates three numbers that matter for retirement: your total corpus at age 60, the lump sum you can take in cash, and the monthly pension your annuity will pay.

You enter your date of birth, contribution, expected return, and annuity rate. The calculator handles the rest, including how many years you have left until 60 and how your money compounds each year.

Every calculation runs inside your browser. Nothing is sent to a server, and there is no sign-up.

Features built into this calculator

• Yearly or monthly contribution modes, with monthly amounts compounded monthly
• Step-up options: fixed, increase 5% a year, decrease 5% a year, or custom year-wise amounts
• Auto lifecycle asset allocation that reduces equity as you age, or a custom Equity, Corporate Bond, and Government Bond mix
• Both withdrawal rules side by side: the 60/40 split and the newer 80/20 split
• A full year-wise projection table showing contribution, corpus, and returns for every year
• Share link, downloadable CSV, and a shareable result image

What Is the National Pension System (NPS)?

NPS is a government-backed, market-linked retirement scheme. You contribute during your working years, professional fund managers invest the money across equity and bonds, and the corpus grows until you exit at 60.

It started in 2004 for central government employees and opened to all Indian citizens in 2009. The scheme is regulated by the Pension Fund Regulatory and Development Authority (PFRDA).

At retirement, part of your corpus comes to you as cash, and part must buy an annuity that pays a monthly pension for life.

How NPS Returns Are Calculated

NPS grows through compounding. Each year your existing balance and new contribution both earn the expected return.

The standard future value formula for a regular yearly contribution is:

FV = C × [ ((1 + r)ⁿ − 1) / r ]

Where C is the yearly contribution, r is the expected annual return, and n is the number of years to 60. This calculator adds each year’s contribution at the start of the year, so it compounds for the full year. If you choose monthly mode, the same logic runs month by month at one-twelfth the annual rate.

NPS returns are not fixed. They depend on your asset mix and market performance. A 10% long-run return is a common planning assumption for an equity-tilted portfolio, but your actual result will vary.

NPS Retirement Corpus & Monthly Pension Milestones (30-Year Horizon)

Baseline Assumptions: DOB: 08-09-1996 (Age 30 to 60) | 10% Expected Return Rate | 40% Reinvested in Annuity at 6% p.a. | 60% Lump Sum Withdrawal

NPS Withdrawal Rules in 2026

This is where the calculator earns its place, because the rules changed in the October to December 2025 PFRDA reforms.

60/40 rule (government sector)

Government employees follow the older split. You take up to 60% of the corpus as a lump sum, and at least 40% must buy an annuity. All 60% of the lump sum is tax-free under Section 10(12A) of the Income Tax Act.

80/20 rule (private and corporate sector)

Non-government subscribers in the All Citizen Model and Corporate NPS can now take up to 80% of the corpus as a lump sum, with a minimum 20% going to annuity. This gives far more cash in hand at retirement.

There is a catch the calculator’s “current vs proposed” labels do not spell out. Even under the 80% option, only 60% of your corpus is tax-free. Section 10(12A) still caps the exemption at 60%. The extra 20% you withdraw is taxable at your income slab rate until the Income Tax Act is amended to match the new PFRDA rule. So a bigger lump sum can mean a tax bill on part of it.

Small corpus exit

If your corpus is small at exit, recent rules let you withdraw the full amount without buying an annuity. The exact threshold has been raised under the 2026 reforms, so check the current PFRDA limit before you plan around it.

Higher exit age

The 2026 rules also raised the maximum entry and exit age, letting subscribers stay invested and defer withdrawal up to age 85.

Tax Benefits on NPS Contributions

NPS is one of the few ways to claim a deduction beyond the ₹1.5 lakh Section 80C limit.

• Section 80CCD(1): your own contribution, within the overall ₹1.5 lakh 80C ceiling
• Section 80CCD(1B): an extra ₹50,000 deduction on top of 80C, available only for NPS
• Section 80CCD(2): employer contribution, deductible separately and available under the new tax regime

The extra ₹50,000 under 80CCD(1B) is the main reason many salaried investors open an NPS account. On maturity, NPS follows an Exempt-Exempt-Taxable pattern: contributions and growth are tax-free, but the annuity pension you receive later is taxed as income.

Worked Example

Take a 30-year-old who invests ₹50,000 a year for 30 years at a 9% expected return.

Total invested: ₹15,00,000
Corpus at 60: about ₹74 lakh (start-of-year compounding)
Estimated returns: about ₹59 lakh

Under the 60/40 rule at a 6% annuity rate:

• Lump sum (60%): about ₹44.6 lakh
• Annuity corpus (40%): about ₹29.7 lakh
• Monthly pension: about ₹14,900

Under the 80/20 rule at the same annuity rate:

• Lump sum (80%): about ₹59.4 lakh
• Annuity corpus (20%): about ₹14.9 lakh
• Monthly pension: about ₹7,400

The 80/20 route gives more cash now but a smaller lifelong pension. Remember that only ₹44.6 lakh of that ₹59.4 lakh lump sum is tax-free.

Contribution Frequency: Yearly or Monthly

Pick yearly if you invest in one shot, often near the end of the financial year to claim the deduction. Pick monthly if you contribute in regular installments. Monthly contributions compound monthly, so the growth path is smoother but the timing of each rupee matters.

Step-Up Strategies

Most people earn more over time, so a flat contribution understates what you can actually save.

• Fixed: same amount every year
• Increase 5% a year: matches rising income and builds a larger corpus
• Decrease 5% a year: for those who plan to ease off later in their career
• Custom year-wise: set a different amount for each year, useful for business owners or bonus-linked income

Asset Allocation

Your corpus depends heavily on how much sits in equity.

Auto lifecycle starts with higher equity when you are young and cuts it as you approach 60, which lowers risk near retirement. This suits hands-off investors.

Custom lets you set your own Equity (E), Corporate Bond (C), and Government Bond (G) split. Equity in NPS is capped, so the tool limits the equity slider accordingly.

How to Use This Calculator

1. Enter your date of birth
2. Choose yearly or monthly, then enter your contribution
3. Pick a step-up strategy
4. Set auto or custom asset allocation
5. Enter expected return and annuity rate
6. Choose the 60/40 or 80/20 withdrawal rule
7. Read your corpus, lump sum, and monthly pension

You can then share the plan, download the year-wise CSV, or save the result as an image.

NPS vs PPF vs EPF

If you want a safe, fully tax-free corpus, PPF wins. If you want higher growth potential and the extra deduction, NPS fits. Many investors use both.

Who Should Use This Calculator

• Private employees checking the value of the ₹50,000 extra deduction
• Government employees planning under the 60/40 rule
• Anyone within ten years of 60 who needs the lump sum and pension split
• Investors comparing NPS with PPF, EPF, or a plain SIP

Limitations to Keep in Mind

• Returns are assumed, not guaranteed. NPS is market-linked.
• The annuity rate is set at the time you buy the annuity, so your real pension may differ.
• The calculator shows the PFRDA withdrawal split, not the exact tax on the taxable portion of an 80% withdrawal.
• Figures are estimates for planning, not financial advice.

Frequently Asked Questions