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 HorizonSafe 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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