What is the NPS Calculator?
The National Pension System is a government-regulated, market-linked retirement account. Your contributions are invested across equity, corporate bonds and government securities (you choose the mix, up to 75% equity), and at retirement you must use at least 40% of the corpus to buy an annuity; the rest is available as a tax-free lump sum.
This calculator is for salaried investors seeking a dedicated retirement vehicle, taxpayers wanting the extra ₹50,000 deduction under 80CCD(1B), and anyone who values enforced long-term discipline. NPS combines three attractions: very low fund-management costs (~0.1%), an extra tax deduction beyond the 80C limit, and lock-in until 60 — a feature for retirement, not a bug.
The calculator projects your accumulation phase, then splits the corpus into the tax-free lump sum and the annuity portion, estimating monthly pension at a typical ~6% annuity rate. Adjust the annuity share to see the trade-off between lump sum and pension income.
NPS corpus and pension
Corpus = SIP formula; Pension = (Corpus × Annuity%) × AnnuityRate ÷ 12
| Symbol | Meaning |
|---|---|
| Corpus | Accumulated value at retirement (monthly contributions compounded) |
| Annuity% | Share of corpus used to buy annuity (minimum 40%) |
| AnnuityRate | Rate paid by the annuity provider (~6% currently) |
Worked example
₹10,000/month for 25 years at 10% builds ≈ ₹1.34 crore. With 40% annuitised: ₹80.4 lakh tax-free lump sum + ₹53.6 lakh annuity paying ≈ ₹26,800/month for life.
| Component | Amount |
|---|---|
| Total contributions | ₹30.0 L |
| Corpus at retirement | ≈ ₹1.34 Cr |
| Lump sum (60%, tax-free) | ≈ ₹80.4 L |
| Annuity purchase (40%) | ≈ ₹53.6 L |
| Est. monthly pension | ≈ ₹26,800 |
Benefits of the NPS Calculator
Extra ₹50,000 deduction under 80CCD(1B)
Over and above the ₹1.5L 80C limit, NPS offers an exclusive ₹50,000 deduction — worth up to ₹15,600/year in the 30% bracket.
Ultra-low fund costs (~0.1% vs 1%+ for mutual funds)
NPS fund managers charge a fraction of mutual fund expense ratios, saving lakhs over a 30-year horizon.
60% of corpus tax-free at retirement
The lump sum portion is entirely tax-free, making NPS one of the most tax-efficient retirement vehicles available.
Auto-discipline: locked until retirement
The lock-in until 60 prevents premature withdrawals, enforcing the long horizon retirement compounding needs.
Employer contribution gets 80CCD(2) benefit
Corporate NPS contributions up to 10% of basic salary are tax-free for the employee — an extra, uncapped deduction for salaried investors.
Limitations to keep in mind
40% mandatory annuity at modest, taxable rates
Nearly half the corpus must buy an annuity paying ~6%, fully taxable and not inflation-indexed — a real drag on retirement income.
Locked until 60 with restricted early exit
Premature exit (before 60) allows only 20% lump sum with 80% mandatorily annuitised; liquidity is very limited.
Annuity income is not inflation-indexed
The pension is fixed in nominal terms and loses purchasing power every year to inflation.
Limited equity cap (75%) for aggressive investors
Even the maximum equity allocation is capped at 75%, below what an aggressive young investor might prefer.
Annuity provider choice is limited
You must buy the annuity from an empanelled insurer, with limited product flexibility at retirement.
Common mistakes to avoid
Choosing a conservative allocation at 25
With 35 years to retirement, a 75% equity allocation historically compounds far ahead of the G-sec-heavy default.
Ignoring the annuity’s low returns
Annuity rates (~6%) are fully taxable and inflation-unprotected — annuitise only the mandatory 40% unless you value certainty highly.
Forgetting NPS in asset allocation
Your NPS equity share counts toward your overall equity exposure — do not double-count risk across NPS and mutual funds.
Assuming full access at 60
Only 60% comes as lump sum; plan other liquid assets alongside for flexibility.
Not using the Active Choice option
The default Auto Choice glides to conservative too early for most; Active Choice lets you hold 75% equity through your earning years.
Expert tips for better results
Use Active Choice with 75% equity until 45
Maximise equity exposure during your long earning years; the Auto Choice default de-risks too early for most investors.
Claim the full ₹50,000 80CCD(1B) every year
It is a separate deduction from 80C — do not let it lapse; over 30 years the tax saved compounds significantly.
Annuitise only the mandatory 40%
Keep the 60% lump sum invested in mutual funds for inflation-beating growth; the annuity covers baseline expenses.
Review your fund manager once a year
You can switch pension fund managers once a year free of cost — move if yours persistently underperforms peers.
Coordinate NPS with EPF and mutual funds
Treat all three as one retirement portfolio; avoid over-allocating to debt across EPF and NPS debt portion.
When to use this calculator
- Core retirement vehicle for salaried investors
- Extra tax saving beyond the 80C limit
- Corporate NPS for employer contributions (80CCD(2))
- Forced long-term compounding for spenders
Frequently asked questions
Sources & references
- PFRDA — National Pension System scheme rules and fund manager list
- Income Tax Department — Sections 80CCD(1), 80CCD(1B), 80CCD(2)
- WealthRise Methodology page — NPS corpus and annuity computation