NPS Calculator

The NPS Calculator estimates the retirement corpus you can build under India's National Pension System (NPS), then shows how that corpus splits into a tax-free lump sum and an annuity that pays a monthly pension. Enter your age, monthly contribution, and expected return, and the tool projects your wealth year by year. The standout feature is an interactive annuity slider that lets you instantly trade a bigger cash payout for a higher monthly pension, so you can find the balance that fits your retirement plan.

What is the National Pension System (NPS)?

The National Pension System is a voluntary, government-backed retirement savings scheme regulated by the PFRDA. You contribute regularly during your working years, and your money is invested across equity, corporate bonds, and government securities. The returns are market-linked, so your corpus grows with the market rather than at a fixed rate. At retirement (normally age 60), you take part of the corpus as a lump sum and convert the rest into a lifelong pension through an annuity.

NPS Maturity Formula

Your NPS corpus is the future value of every monthly contribution, compounded monthly until retirement. Because contributions are made at the start of each month, the standard annuity-due formula is used:

Where P is your monthly contribution, i is the monthly rate (annual return divided by 12), and n is the total number of months until retirement. The monthly pension is then estimated from the annuity portion:

The 60/40 Rule: Lump Sum vs Annuity

At normal exit at age 60, NPS rules let you withdraw up to 60% of your corpus as a tax-free lump sum, while at least 40% must be used to buy an annuity that provides a regular pension for life. You can choose to annuitize more than 40% — every extra INR you move into the annuity raises your monthly pension but reduces the cash you take home. The trade-off slider in this tool is built specifically to make that decision visual and instant.

How Tax Works on NPS at Retirement

NPS enjoys a favourable tax treatment at exit. The lump-sum withdrawal of up to 60% is fully tax-free. The amount used to purchase the annuity is also not taxed at the time of purchase. However, the monthly pension you later receive is taxable as ordinary income in the year you receive it, at your applicable slab rate. This is why the balance between lump sum and annuity is partly a tax decision, not just an income decision.

What Affects Your NPS Corpus?

How to Use This Calculator

1. Enter your age and contribution: Put in your current age, your planned retirement age (usually 60), and the amount you invest in NPS each month.
2. Set your assumptions: Enter your expected annual return, the share of the corpus you will annuitize (minimum 40%), and the expected annuity rate.
3. Click Calculate: The tool shows your maturity corpus, tax-free lump sum, and estimated monthly pension, plus a year-by-year growth chart.
4. Use the trade-off slider: Drag the annuity slider to instantly see how more annuity boosts your pension while shrinking your lump sum.

Frequently Asked Questions

What is the NPS Calculator?

The NPS Calculator estimates the retirement corpus you will build under India's National Pension System, based on your monthly contribution, investment period, and expected return. It also splits the corpus into a tax-free lump sum and an annuity, and estimates the monthly pension that annuity can pay.

How is the NPS maturity corpus calculated?

The corpus is the future value of your monthly contributions compounded monthly. The formula is FV = P × ((1 + i)ⁿ − 1) / i × (1 + i), where P is the monthly contribution, i is the monthly rate (annual return divided by 12), and n is the total number of months until retirement.

How much pension will I get from NPS?

At retirement, at least 40% of your corpus must be used to buy an annuity. The monthly pension is roughly the annuity corpus multiplied by the annuity rate, divided by 12. For example, an annuity corpus of ₹10,000,000 at a 6% annuity rate pays about ₹50,000 per month.

Is the NPS lump sum taxable?

Under current rules, the lump sum you withdraw at age 60 (up to 60% of the corpus) is fully tax-free. The annuity portion is not taxed when purchased, but the monthly pension you later receive is taxed as ordinary income in the year you receive it.

What is the minimum annuity requirement in NPS?

At normal exit at age 60, you must use at least 40% of your accumulated corpus to purchase an annuity that provides a regular pension. You can choose to annuitize more than 40%, but not less. The remaining amount can be taken as a tax-free lump sum.

What return can I expect from NPS?

NPS returns depend on your asset allocation between equity, corporate bonds, and government securities. Historically, diversified NPS portfolios have delivered roughly 8% to 12% per year over the long term, though returns are market-linked and not guaranteed. A 10% assumption is a common middle-ground estimate.

Additional Resources

• National Pension System - Wikipedia
• Annuity - Wikipedia