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What is the NPS Calculator?
The National Pension System (NPS) is a government-backed, market-linked retirement scheme open to all Indian citizens, offering additional tax deduction of up to ₹50,000 under Section 80CCD(1B) over and above the ₹1.5 lakh limit under Section 80C. Because your contributions are invested in equity and debt and grow over decades, projecting the final corpus requires compounding your monthly contribution at an assumed rate of return. This calculator does exactly that, and also splits the final corpus between the portion you can withdraw and the portion that must be used to buy an annuity, as per NPS withdrawal rules.
NPS Corpus Formula
where r is the monthly rate of return (annual rate ÷ 12 ÷ 100) and n is the total number of months contributed. On exit, current NPS rules allow you to withdraw up to 60% of the corpus as a tax-free lump sum, while the remaining 40% must go into an annuity that pays you a regular pension.
Worked Example
Contribute ₹5,000 every month for 25 years (300 months) at an assumed 10% annual return. Applying the formula gives a projected corpus of approximately ₹66.9 lakh at retirement. Of this, roughly ₹40.1 lakh (60%) can be withdrawn as a lump sum, largely tax-free, while about ₹26.8 lakh (40%) must be used to purchase an annuity plan that will pay you a monthly pension for life.
How to Use This Calculator
- Enter your planned monthly NPS contribution.
- Enter the expected annual rate of return — NPS equity-heavy Tier-1 accounts have historically returned 9–12% over the long run.
- Enter the number of years remaining until retirement (typically until age 60).
- Click Calculate to see your projected total corpus, lump-sum withdrawal, and annuity portion.
Things to Know About NPS
- You can choose your own asset allocation between equity (E), corporate bonds (C), and government securities (G), or opt for an auto-choice lifecycle fund that gradually shifts to safer assets as you age.
- Employer contributions to NPS (for salaried employees) enjoy a separate deduction under Section 80CCD(2), making it one of the most tax-efficient retirement products available in India.
- The mandatory annuity portion is taxed as regular income when you receive the pension, so factor that into your retirement income planning.
Common Mistakes to Avoid With NPS
A common planning mistake is assuming the entire corpus will be available as a lump sum at retirement — by rule, at least 40% must be used to purchase an annuity that pays a monthly pension, and only up to 60% can be withdrawn tax-free, so treating the full projected corpus as spendable savings overstates your actual liquid retirement fund. Another frequent error is picking an unrealistic expected return: while NPS equity-heavy schemes have historically delivered 9-12% over long periods, returns are market-linked and not guaranteed, so it's safer to run this calculator with a conservative 8-10% assumption rather than the highest historical figure. People also often overlook the separate Section 80CCD(1B) deduction of up to ₹50,000, available only for NPS and over and above the ₹1.5 lakh 80C limit — many investors miss this extra tax benefit simply by not opening a Tier-1 NPS account alongside their existing 80C investments.
Frequently Asked Questions
Q: What's the difference between NPS Tier-1 and Tier-2 accounts?
A: Tier-1 is the primary retirement account with withdrawal restrictions and tax benefits (80C and 80CCD(1B)), while Tier-2 is a voluntary savings account with no lock-in and no tax deduction on deposits, though it uses the same fund managers and investment options. Only Tier-1 contributions are used for retirement corpus projections like the one in this calculator.
Q: How much of my NPS corpus can I withdraw at retirement?
A: At normal retirement (age 60), you can withdraw up to 60% of the accumulated corpus as a lump sum, which is entirely tax-free. The remaining minimum 40% must be used to purchase an annuity plan from a PFRDA-empanelled insurer, which then pays you a regular monthly pension that is taxable as income.
Q: Is the NPS annuity income taxable?
A: Yes. While the lump-sum withdrawal is tax-free, the monthly pension you receive from the annuity is fully taxable in the year you receive it, added to your regular income and taxed at your applicable slab rate — an important factor when estimating post-retirement cash flow.
Q: What is the extra ₹50,000 NPS tax deduction under Section 80CCD(1B)?
A: This is an additional deduction available exclusively for NPS Tier-1 contributions, over and above the ₹1.5 lakh limit under Section 80C. So a taxpayer in the old regime can claim up to ₹2 lakh total deduction (₹1.5 lakh under 80C plus ₹50,000 under 80CCD(1B)) by contributing to NPS.
Q: Can I change my NPS asset allocation over time?
A: Yes, subscribers can choose "Active Choice" to set their own mix across equity (E), corporate bonds (C), and government securities (G) — equity is capped at 75% and gradually reduced after age 50 — or opt for "Auto Choice," a lifecycle fund that automatically shifts towards safer assets as you approach retirement age.
NPS vs PPF vs EPF — Choosing Between Retirement Options
NPS, PPF, and EPF are the three most common long-term retirement instruments for Indian taxpayers, but they differ significantly. EPF is mandatory for most salaried employees, offers a government-declared fixed interest rate (historically 8-8.5%), and both employer and employee contribute 12% of Basic salary. PPF is voluntary, open to anyone including the self-employed, offers a slightly lower fixed rate (currently 7.1%) but with full EEE tax treatment and a 15-year lock-in. NPS is market-linked, can deliver higher long-term returns than either EPF or PPF because of its equity exposure, offers the unique extra ₹50,000 deduction under Section 80CCD(1B), but locks 40% of the corpus into a mandatory annuity at retirement and is not entirely risk-free. Many financial planners recommend using all three together — EPF and NPS through your employer, plus voluntary PPF or NPS Tier-1 contributions — to diversify between guaranteed and market-linked growth.
More NPS Corpus Examples
| Monthly Contribution | Years to Retirement | Assumed Return | Projected Corpus |
|---|---|---|---|
| ₹2,000 | 30 years | 9% | ≈ ₹36.6 lakh |
| ₹10,000 | 20 years | 10% | ≈ ₹76.6 lakh |
| ₹15,000 | 15 years | 11% | ≈ ₹75.9 lakh |
These examples show that starting early with a smaller amount (₹2,000/month for 30 years) can build a comparable or larger corpus than starting late with a much bigger contribution over a shorter period, underlining why joining NPS in your 20s or early 30s is particularly valuable.
📅 Last reviewed: July 2026 · Formulas verified against RBI/SEBI/IT Dept guidelines.