PORTFOLIO LONGEVITY
Safe Withdrawal Rates in India: Trinity Study vs. Developing Market Realities
Published: August 2026 • Verified Reference
The popular 4% Safe Withdrawal Rate (SWR) originates from the 1998 US Trinity Study, which evaluated 30-year retirement horizons in low-inflation US equity and bond markets (historical inflation ~2.5% to 3.5%).
1. The Developing Market Inflation Trap
In India, structural CPI inflation averages 6% to 7%, with healthcare and lifestyle inflation often exceeding 8% to 10%.
• At 2.5% US inflation, annual expenses double every 29 years.
• At 6.0% Indian inflation, annual expenses double every 12 years (and quadruple in 24 years).
• At 8.0% medical inflation, costs double every 9 years.
2. Recommended Indian SWR Thresholds
| Retirement Horizon | Safe Withdrawal Rate (SWR) | Corpus Multiplier |
|---|---|---|
| Traditional (60+ yrs / 25-yr horizon) | 3.50% – 4.00% | 25× – 28× |
| Early FIRE (45–55 yrs / 35-yr horizon) | 3.00% – 3.25% | 30× – 33× |
| Ultra-Early FIRE (30–40 yrs / 50-yr horizon) | 2.50% – 2.85% | 35× – 40× |
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