Formula used
NPS corpus = future value of monthly contribution compounded at the expected annual return until age 60. Under current PFRDA normal-exit rules for the All Citizen Model, a corpus above Rs 12 lakh can use at least 20% for annuity and up to 80% for lump-sum or periodic payout. Monthly pension = annuity corpus × annuity rate / 12. Income-tax treatment is separate: Section 10(12A) currently exempts lump-sum withdrawal up to 60% of the corpus, so verify the treatment of any amount above 60% before choosing an exit split.
Example calculation
Age 30, Rs 5,000/month, 10% return, 40% annuity at 6% (the default): corpus at 60 = about Rs 1,13,02,000. Lump-sum = Rs 67,81,000, which sits inside the 60% currently exempt under Section 10(12A). Annuity corpus = Rs 45,21,000. Estimated monthly pension = Rs 22,605. Dropping the annuity to the permitted 20% minimum would raise the lump sum to about Rs 90,42,000 and cut the pension to about Rs 11,302, but the roughly Rs 22,60,000 above the 60% mark has no matching exemption today.
How to use this calculator
- Enter your current age — corpus is estimated until age 60.
- Enter your monthly NPS Tier 1 contribution (include employer contribution if adding both).
- Set the expected annual return based on your NPS fund allocation (10% for aggressive, 7–8% for conservative).
- Set annuity purchase % — the 40% default keeps your lump sum within the 60% currently exempt under Section 10(12A). Current All Citizen Model normal-exit rules allow going as low as 20% when corpus is above Rs 12 lakh, which increases the lump sum but leaves the portion above 60% without a matching exemption. Other subscriber models and corpus thresholds can differ.
- Set the annuity rate offered by insurers (typically 5.5–7%) to estimate monthly pension.
Important assumptions
- Constant monthly contribution throughout the period — actual contributions may vary.
- Constant return rate — NPS equity allocation returns are market-linked and volatile.
- Annuity rate is an estimate; actual rates depend on the insurer and annuity type chosen at maturity.
- Employer NPS contributions (80CCD(2)) are not separately tracked — add them to monthly contribution if including both.
- The calculator models the All Citizen Model normal-exit split for a corpus above Rs 12 lakh; government-sector and lower-corpus exit rules can differ. A corpus of Rs 8 lakh or less can generally be taken as 100% lump sum, which this calculator's 20% minimum annuity does not model.
- Lump-sum and pension figures are pre-tax. Annuity income is taxable at your slab rate, and any lump sum above 60% of the corpus has no current exemption under Section 10(12A).
- PFRDA permits up to 80% lump-sum or periodic payout in the modeled normal-exit scenario, while the Income Tax Department currently states a 60% lump-sum exemption under Section 10(12A).
- Educational estimate only. Verify current NPS rules and annuity rates on the NPS Trust website.
Common mistakes to avoid
- Using the equity CAGR (10–12%) for a conservative NPS allocation with high government bond exposure.
- Forgetting that monthly pension (annuity income) is taxable at your slab rate.
- Assuming the extra Rs 50,000 Section 80CCD(1B) self-contribution deduction is available under the new regime; it generally belongs to the old-regime deduction set.
- Treating employer NPS contribution as unlimited; Section 80CCD(2) uses a statutory percentage of salary and depends on the tax regime.
How NPS works
The National Pension System (NPS) is a voluntary, long-term retirement savings scheme regulated by PFRDA. Contributions go into Tier 1 and optionally Tier 2. Under current All Citizen Model normal-exit rules, a corpus above Rs 12 lakh can allocate up to 80% to lump-sum or periodic payout and at least 20% to annuity. The Income Tax Department currently describes lump-sum exemption up to 60%, so the permitted exit split and the tax-exempt split are not identical.
- Old regime: eligible self-contributions can use Section 80CCD(1) within the combined limit plus up to Rs 50,000 under Section 80CCD(1B).
- New regime: eligible employer NPS contributions can be deducted under Section 80CCD(2), subject to the statutory percentage of salary.
- Normal exit above Rs 12L corpus: up to 80% payout + at least 20% annuity; current lump-sum tax exemption is stated separately at up to 60%.
NPS vs EPF vs PPF
EPF is automatic for organised-sector employees (12% employee + 3.67% employer to EPF). PPF is a 15-year government-backed investment with full EEE tax status. NPS is more flexible in investment choice (equity to bonds) and may provide an extra Rs 50,000 Section 80CCD(1B) deduction under the old regime; the new regime instead retains the eligible employer-contribution deduction under Section 80CCD(2). NPS also requires an annuity purchase at maturity under the applicable exit rules.
- NPS: market-linked, flexible allocation, regime-dependent tax benefits, annuity required.
- EPF: auto-deducted, employer-matched, ~8.25% declared rate.
- PPF: voluntary, risk-free, full EEE, 15-year lock-in.
Source and Methodology
Last reviewed: August 2026
Corpus is computed as the future value of a constant monthly contribution compounded monthly at the entered annual rate until age 60. Lump-sum and annuity splits are applied on the total corpus. Monthly pension = annuity corpus × annuity rate / 12. All figures are pre-tax estimates.
Educational estimate only. RupeeKit does not provide personalized financial, investment, legal, tax or loan advice.
Related calculators and guides
You can cross-check this estimate using: salary in-hand calculator, Old vs New Tax Regime Calculator, 80C deduction calculator, EMI calculator, ITR-2 filing guide, emergency fund guide.
When this tool is useful
- When you want a fast estimate before making a financial or salary decision.
- When you want to compare different assumptions in seconds.
- When you want to understand the formula behind the result.