NPS Calculator
The NPS Calculator estimates the corpus you could accumulate in the National Pension System and the monthly pension it could generate. NPS is a government-backed retirement savings scheme in India.
NPS Calculator
Currency
$
%
years
What the result means
NPS accumulates your contributions with compounded returns. At retirement, 60% of the corpus can be withdrawn as a lump sum (tax-free), and 40% must be used to buy an annuity that provides a monthly pension.
How to use this calculator
- 1Enter your monthly NPS contribution in rupees.
- 2Enter the expected annual return rate.
- 3Enter the number of years until retirement.
- 4Press Calculate to see the estimated corpus, lump sum, and monthly pension.
- 5Adjust the inputs to plan your retirement savings.
The formula
The calculation uses a standard, verifiable formula. Here it is in its simplest form.
Corpus = Monthly × [((1 + r)^n − 1) / r] × (1 + r)
Lump sum = Corpus × 60%
Monthly pension ≈ (Lump sum × 6%) ÷ 12
What each variable means
| Symbol | Name | Description |
|---|---|---|
| M | Monthly contribution | How much you contribute to NPS each month. |
| r | Monthly rate | The expected annual return divided by 12 and 100. |
| n | Months | The number of months until retirement. |
Step-by-step example
Example: ₹5,000/month at 10% for 30 years
Monthly contribution:₹5,000Expected return:10%Years:30
- 1Monthly rate = 10% ÷ 12 = 0.833% = 0.00833
- 2Months = 30 × 12 = 360
- 3Corpus ≈ ₹1,13,00,000
- 4Lump sum (60%) ≈ ₹67,80,000
- 5Monthly pension ≈ ₹33,900
Result
≈ ₹1.13 crore corpus, ₹33,900/month pension
What changes the result
- NPS offers tax benefits under Section 80CCD.
- Returns depend on the asset allocation (equity, corporate bonds, government securities).
- The annuity rate at retirement affects the monthly pension.
- Higher equity allocation typically means higher long-term returns but more volatility.
Edge cases to be aware of
Unusual situations handled correctly
- If the return rate is 0%, the corpus equals total contributions.
- The annuity rate used here (6%) is an estimate; actual rates vary.
- NPS has a mandatory annuity purchase of at least 40% of the corpus.
Common mistakes
Avoid these errors
- Using the annual rate directly instead of dividing by 12.
- Assuming the annuity rate will be higher than current market rates.
- Ignoring the mandatory 40% annuity requirement.
Assumptions
- The return rate is constant over the investment period.
- Contributions are made monthly at the beginning of each month.
- The annuity rate is 6% of the lump sum.
Limitations
- Actual returns vary with market conditions and asset allocation.
- The annuity rate at retirement is not guaranteed.
- This is an estimate for planning, not a guarantee.
Frequently asked questions
What is the tax benefit of NPS?+
NPS contributions are tax-deductible under Section 80CCD(1) up to 10% of salary (or 20% for self-employed), with an additional deduction under 80CCD(1B) up to ₹50,000.
How much of the NPS corpus is tax-free at withdrawal?+
Up to 60% of the corpus can be withdrawn as a lump sum at retirement, and this amount is tax-free. The remaining 40% must be used to purchase an annuity.
What return rate should I expect from NPS?+
Historically, NPS has delivered 9-12% annual returns depending on asset allocation. A conservative estimate of 8-10% is reasonable for planning.