Retirement Pension Calculator
Estimate your monthly pension on retirement based on last basic pay and qualifying service.
Last updated 29/07/2026
Calculator
Retirement Pension Calculator inputs
Enter your date of birth.
Stored only in this browser — never uploaded, no account required.
Manage My Service DetailsHow this works
What it means
An estimate of your monthly basic pension on retirement, along with your age and length of service at that point. This is Version 1 — a simplified planning estimate, not an official pension figure.
How it’s calculated
The calculator applies the single most widely-cited baseline rule: 50% of your last basic pay for 20 or more years of qualifying service, reduced proportionally below 20 years. Qualifying service is auto-calculated from your joining and retirement dates, but you can type over it if your reckonable service differs.
Common Defence use cases
Getting a rough monthly pension figure while planning ahead of retirement, comparing Normal Retirement against an upcoming Voluntary Retirement date, and sanity-checking a figure quoted elsewhere before formally verifying it.
Formula
Qualifying Service (years) = days between joining date and retirement date ÷ 365.25
(or your manually entered figure, if provided)
ratio = min(Qualifying Service ÷ 20, 1)
Estimated Basic Pension (monthly) = 50% × Last Basic Pay × ratioAssumptions
- This is a simplified, illustrative estimate only — not an official pension calculation. Always verify your actual entitlement with your Pension Disbursing Authority, PCDA(P)/PCDA(O), or your service HQ pension cell before making financial decisions.
- Assumes the "Last Basic Pay" you enter is already your correct reckonable emoluments as defined by pension rules — this calculator does not add Military Service Pay or any other element to what you type in.
- Assumes pension scales proportionally for qualifying service below 20 years and caps at 50% of last basic pay for 20 years or more. Actual rules for minimum qualifying service, invalidment pension, and short-service exits are not modeled.
- Applies the same formula to Normal Retirement and Voluntary Retirement. Actual VRS rules may include additional weightage-of-service or different eligibility conditions — Version 1 does not model these.
- Does not account for commutation of pension, Dearness Relief, family pension, disability pension, or One Rank One Pension (OROP) revisions.
- Does not distinguish between Army, Navy, Air Force, or between Officers and JCOs/ORs, whose exact pension rules and reckonable-service definitions can differ.
- Last Basic Pay can be entered manually or resolved from the 7th CPC Pay Matrix Calculator (Pay Level + Cell Number) — see that calculator's own assumptions for what the Pay Matrix figure does and doesn't include.
Example calculations
Born 15 Jan 1980, joined 15 Jan 2000, retiring 15 Jan 2025, last basic pay ₹1,00,000 (Normal Retirement)
Age at retirement 45 years — 25 years qualifying service (capped at the 20-year full-pension threshold) — estimated pension ₹50,000/month
Born 1 Jun 1995, joined 1 Jun 2015, retiring 1 Jun 2030, last basic pay ₹80,000 (Voluntary Retirement)
Age at retirement 35 years — 15 years qualifying service — estimated pension ≈ ₹30,000/month (75% of full pension)
Born 1 Apr 1985, joined 1 Apr 2010, retiring 1 Apr 2028, last basic pay ₹60,000, qualifying service manually entered as 20 years
Age at retirement 43 years — 18 years of actual service, but 20 years qualifying service as entered — estimated pension ₹30,000/month (full pension)