The Decumulation Engine

Bucket Architecture vs Fixed-4% — Sequence Risk, Tested

Cash · Debt · Equity Buckets Monte Carlo Ready

1. Retirement Setup

Starting age
Plan to age 92
All decumulating capital
Inflated annually · Indian-context SWR is 3.0–3.5% (fixed) or 3.5–4.5% (variable) per the Architecture paper. The 4% Bengen rule was calibrated to US Treasury yields of 5–6% real; Indian government bonds yield ~1–2% real, so 3.4% (₹85,000/mo on ₹3 Cr) is a more durable starting point.

2. Bucket Allocation (must total 100%)

Debt Liquid / money market / short-duration debt funds (incl. FDs)
30%
Hybrid Balanced / dynamic-asset / equity-savings funds
40%
Equity Equity MFs / index funds
30%
Total: 100%
Indian advisory default: 30% debt · 40% hybrid · 30% equity. Hybrid funds (with >65% equity) are equity-taxed and provide a smoother return path than pure equity — which is why typical retiree portfolios rarely sit at 60%+ pure equity.
One unified Debt bucket: The Debt bucket combines liquid/money-market funds with short-duration debt funds — both T+1 redemption, both yielding around 6.5%. The architectural value isn't yield differentiation but the cascade discipline (drain Debt first, then Hybrid, then Equity). Many advisors run this as a single money market or short-duration fund.

3. Return Assumptions & Inflation

Long-run mean
Annualised std dev
~65/35 equity-debt blend
Lower than pure equity
Liquid / money market / short-duration blend
General CPI assumption
Major hospitalisation
Per event, inflated annually

4. Bucket Sizing & Withdrawal Rule

Years of expenses kept in debt
For the bucket strategy only
Note: The "Fixed-4% Single Corpus" strategy always uses a fixed inflation-adjusted withdrawal — that's the canonical comparison case. Equity-rebalance threshold for refilling debt: equity has to be up +10% in a year. Otherwise debt is drained without refill.

5. Run Simulation

Click to begin.
Strategy A · Vulnerable Default
Fixed-4% Single Corpus
Final Corpus (year 32)
Year of Ruin (if any)
Lowest Real Corpus Reached
Healthcare Events Triggered
Strategy B · The Architecture
Debt + Hybrid + Equity Buckets
Final Corpus (year 32)
Year of Ruin (if any)
Lowest Real Corpus Reached
Healthcare Events Triggered

Total Corpus — Year by Year

Bucket Evolution (Strategy B only)

Year-by-Year Detail

YrAge Withdrawal HC Eq Ret Hyb Ret A: Corpus B: Debt B: Hybrid B: Equity B: Total