What is the 4% Rule?
The 4% rule was created by financial planner William Bengen in 1994. He analysed decades of US market data and found that retirees could safely withdraw 4% of their portfolio in Year 1 — then increase that amount by inflation every year — without running out of money over 30 years.
It became the gold standard of retirement planning worldwide. But here's the problem: it was built entirely on US data, US inflation (2–3%), and US market returns. India is fundamentally different.
Ramesh's Story: A Real Calculation
Ramesh is 60 years old, lives in Pune, and just retired after 30 years as a bank manager. He has ₹75 lakh saved across three accounts:
- EPF: ₹35 lakh (tax-free, compounded at 8.25%)
- PPF: ₹18 lakh (EEE status, 7.1% rate)
- Mutual Funds: ₹22 lakh (equity large-cap, 12% return, LTCG 12.5%)
He wants to know: can he withdraw ₹25,000/month safely? Let's find out using the 4% rule.
Total corpus: ₹75 lakh
Year 1 withdrawal: ₹75L × 4% = ₹3,00,000/year = ₹25,000/month (gross)
Tax on ₹3L withdrawal:
→ EPF portion: ₹35L/₹75L × ₹3L = ₹1,40,000 → Tax-free (Sec 10(12))
→ PPF portion: ₹18L/₹75L × ₹3L = ₹72,000 → Tax-free (EEE)
→ MF portion: ₹22L/₹75L × ₹3L = ₹88,000 → LTCG on gains = ₹44K, exempt (under ₹1.25L) → Zero tax
Net monthly after tax: ₹25,000 — all of it. Zero tax.
Portfolio at age 85 (25 years later): ₹38 lakh still remaining. Fully funded.
Why Ramesh's Corpus Survives
Ramesh's portfolio has a blended return of approximately 9.2% (EPF 8.25% + PPF 7.1% + MF 12%, weighted by corpus size). His withdrawal rate is 4%, and inflation is 4.5%.
The key formula: Return ≥ Withdrawal Rate + Inflation
For Ramesh: 9.2% ≥ 4% + 4.5% = 8.5% ✓ He earns more than he withdraws and loses to inflation. The corpus survives the full 25-year retirement.
When Does the 4% Rule Fail in India?
The 4% rule breaks down when your portfolio return falls below (withdrawal rate + inflation). The three most common danger scenarios:
| Scenario | Portfolio Return | Inflation | 4% Rule Result |
|---|---|---|---|
| All FD / very conservative | 6–7% | 5% | Corpus depletes ~age 74 |
| Mix of EPF + some MF | 8.5–9% | 4.5% | Survives 25–30 years ✓ |
| NPS + EPF + equity MF | 10–11% | 4.5% | Corpus grows ✓ |
| High inflation scenario | 9% | 7% | Risky — depletes early |
The 4% Rule vs Other Withdrawal Strategies
Here's how it compares to four other common strategies for a ₹75 lakh corpus at 9.2% blended return:
| Strategy | Year 1 Monthly | Year 10 Monthly | Survives to 85? | Best for |
|---|---|---|---|---|
| 4% Rule | ₹25,000 | ₹38,800 | Yes ✓ | Conservative, predictable |
| Guardrails (5.5%) | ₹34,375 | Variable | Yes ✓ | Higher income, flexible spender |
| Constant 5% | ₹31,250 | Market-dependent | Yes (never 0) | Variable expenses OK |
| Bucket Strategy | ₹28,125 | ₹43,500 | Yes ✓ | Peace of mind |
| RMD Method | ₹25,826 | ₹41,200 | Yes ✓ | Age-aligned, healthcare planning |
The Effect of Inflation: The Real Danger
Here is the uncomfortable truth most calculators hide: ₹25,000/month today will feel like much less in 20 years. At 5% annual inflation:
- ₹25,000 today → equivalent to ₹9,400 in today's money by age 80
- Your grocery bill in 2045 will be 2.6x what it is today
- Healthcare costs in India inflate faster — at 7–10% annually
This is why the 4% rule increases your withdrawal by inflation each year. In Year 20, Ramesh withdraws ₹65,000/month (nominal) — but that ₹65,000 has roughly the same purchasing power as his ₹25,000 today.
How to Calculate Your 4% Rule Number
- Estimate your annual retirement expenses — include healthcare, travel, family, rent (if applicable), utilities. Don't underestimate.
- Multiply by 25 — this is the corpus you need (since 4% of 25x = 100% of annual expenses).
- Verify your return rate — your blended return must exceed (4% + your inflation estimate) for it to work.
| Monthly Expenses | Annual Expenses | Corpus Needed (4% Rule) |
|---|---|---|
| ₹20,000 | ₹2.4L | ₹60 lakh |
| ₹30,000 | ₹3.6L | ₹90 lakh |
| ₹50,000 | ₹6L | ₹1.5 crore |
| ₹75,000 | ₹9L | ₹2.25 crore |
| ₹1,00,000 | ₹12L | ₹3 crore |
The Verdict: Use the 4% Rule if…
- Your portfolio has at least 40–50% in equity (NPS, Mutual Funds) earning 10–12%
- You have EPF and/or PPF providing a 7.5–8.25% tax-free floor
- You want predictable income that increases with inflation each year
- You are retiring at 58–65 with a 25–30 year horizon
Be cautious if: You are retiring at 45–50 (40+ year horizon — the 4% rule was not tested for this), or your corpus is mostly FD/debt earning below 8%, or if India's inflation stays elevated at 6–7%.