"Save 25 times your annual expenses" is the number that circulates most often for a retirement target. It comes from the 4% safe withdrawal rate rule — but that rule was built on U.S. market and inflation data, and applying it to Indian retirement planning without adjustment tends to undershoot.
Where the 25x figure comes from
If you can safely withdraw 4% of your corpus each year without running out of money over a multi-decade retirement, the corpus needed is the inverse: annual expenses ÷ 4% = 25x annual expenses. The 4% figure assumes a specific mix of equity and bond returns net of inflation, sustained over 30 years.
Why India needs a different multiple
Indian retirees generally hold more debt-heavy, lower-yielding instruments (FDs, PPF, NPS annuities) in the withdrawal phase than the equity-heavy U.S. portfolios the 4% rule was modeled on, and long-term consumer inflation in India has historically run higher than in developed markets. Both push the safe withdrawal rate down — closer to 3-3.5% — which pushes the required multiple up to roughly 28-33x annual expenses, depending on how conservative your post-retirement asset mix is.
Working out your own number
- Start with today's annual expenses — not income, actual spending.
- Inflate them to your retirement age. At 6% average inflation, ₹6 lakh/year today becomes roughly ₹19 lakh/year in 20 years.
- Apply your multiple (25-33x) to that inflated figure to get your target corpus at retirement.
Example: ₹6 lakh/year today, 20 years to retirement, 6% inflation → about ₹19.2 lakh/year at retirement. At 30x, that's a target corpus of roughly ₹5.75 crore— a very different number from applying 25x to today's ₹6 lakh figure (₹1.5 crore), which is the mistake most back-of-envelope estimates make by skipping the inflation step.
The portion of that corpus you keep in safe, fixed-return instruments rather than equity matters too — see PPF vs NSC vs KVP vs FD: Which Should You Choose? for how the common options compare on lock-in and tax treatment.
Two separate numbers, easy to conflate
"How much do I need to retire" and "how much do I need to save each month to get there" are different questions. The corpus target above answers the first. Getting from your current savings to that target is a second calculation involving your investment horizon and expected return — working backward from the corpus to a required monthly SIP.
Work backward from your target
Use the Retirement Goal Calculatorto find the monthly SIP you'd need, given your years to retirement and expected return, to reach your target corpus.