Annuity Calculator India — Monthly Pension from Corpus
Calculate monthly pension from your retirement corpus, understand NPS 60/40 annuity split, and compare fixed vs increasing annuity options. Updated with LIC Jeevan Akshay reference rates, PFRDA rules, and FY 2025-26 income tax slabs.
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How to Use This Calculator
Monthly Pension from Corpus tab
Enter your retirement corpus (e.g. ₹1,00,00,000), your age at retirement (default 60), and select the annuity type (life annuity, joint life, annuity certain 10/20 years, or life with return of purchase price). The calculator shows your gross monthly pension, tax deduction at your slab rate, and net monthly income. It also compares all five annuity types side by side so you can choose the best option for your situation.
NPS Annuity Split tab
Enter your total NPS corpus at maturity and the calculator splits it per PFRDA rules: 60% as a tax-free lump sum and 40% into mandatory annuity. It calculates monthly pension from the annuity portion and monthly SWP income if you invest the lump sum in a balanced mutual fund. This gives you a complete picture of your total post-retirement monthly income from NPS.
Fixed vs Increasing Annuity tab
Enter your corpus, fixed and increasing annuity rates, the annual increase percentage, and expected inflation. The calculator runs a 20-year year-by-year comparison showing both nominal and inflation-adjusted (real) pension values. It identifies the break-even year when the increasing pension catches up with fixed, helping you decide which option protects your purchasing power better over a long retirement.
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The Formula
Annuity pension is calculated as a percentage of the purchase price (corpus). The rate depends on your age, annuity type, and insurer:
Annual Pension = Corpus × Annuity Rate / 100
Monthly Pension (Gross):
Monthly Pension = Annual Pension / 12
Tax on Annuity Income:
Annual Tax = Annual Pension × Slab Rate
Monthly Tax = Annual Tax / 12
Net Monthly Pension:
Net Monthly = Monthly Pension − Monthly Tax
NPS Split (PFRDA rules):
Lump Sum = NPS Corpus × 60% (tax-free under Section 10(12A))
Annuity Purchase = NPS Corpus × 40% (mandatory)
Monthly SWP from Lump Sum = Lump Sum × SWP Rate / 12
Increasing Annuity (year n):
Pensionn = Starting Pension × (1 + Annual Increase)n-1
Real Value (inflation-adjusted):
Real Pensionn = Nominal Pensionn / (1 + Inflation)n-1
Annuity income is fully taxable as "income from other sources" under the Income Tax Act. There is no special exemption or lower rate for annuity income from insurance companies.
Example
Mohan — Retires at 60 with ₹1Cr corpus
Mohan (60) retires from a private company with a total retirement corpus of ₹1,00,00,000 (₹1 Cr). He wants to understand how much monthly pension he can get from an annuity, and whether NPS gives him a better deal with the 60/40 split. He is in the 30% tax slab.
Step 1: Life Annuity calculation
Step 2: Monthly pension result
Step 3: If ₹80L was in NPS (60/40 split)
Mohan realises that the NPS route gives him ₹49,333/month total income (annuity + SWP) versus ₹37,917/month from a pure annuity on ₹1Cr. The NPS 60% lump sum invested in a balanced fund via SWP is more tax-efficient because only gains (not principal) are taxed, and the corpus continues to grow.