Why two portfolios averaging 7% can finish at €350k or €1.2M
You reach your FIRE Number and shift from accumulation to decumulation. From that day on, a crash is no longer a buying opportunity: it is a forced sale. If the drop comes in the first 5 to 10 years, you liquidate shares at the worst possible price to cover your spending. Those shares never participate in the recovery. That is the sequence of returns risk, and it can sink a plan that was perfectly calibrated on the average.
Why decumulation flips the rules
During accumulation, a crash lets you buy cheaper. It is a gift. During decumulation, the math reverses: to cover your €40,000 for the year, you sell more shares when the market is down 30%. In practice, you liquidate 1.4× more shares for the same check. Those shares sold near the bottom never participate in the recovery. The effect is asymmetric and irreversible.
How to protect yourself
The good news: sequence risk is concentrated in the first 5-10 years of retirement. After that, if your capital has survived, growth takes over.
Alice and Bob: €1M each, 7% average, two destinies
Identical starting capital (€1,000,000), identical withdrawal (€40,000/year), identical 7% average return over 20 years. Alice strings together two good years (+25%, +15%) before a crash in year 10. Bob starts with -30% and -10%, then the same good years arrive later. After 20 years: Alice ends at €1,200,000, Bob at €350,000. Same average, an €850,000 gap.
The 4 protection strategies
- Cash cushion: 2-3 years of expenses in cash. When the market plunges, you draw on the cash, not on the portfolio.
- Bucket strategy: three buckets (cash 2-3 years, bonds 5-7 years, stocks long-term). You refill the cash bucket when stocks perform.
- Spending flexibility: a 10-15% cut on drawdowns greater than 20%. A critical variable, often forgotten.
- Bond tent: 50-60% bonds for the first 5 years, then glide back to 70/30. You absorb the concentrated risk, then unlock the equity returns.
⚠️ The average return trap
Average return on its own is misleading. Two portfolios averaging 7% can finish with a 3× factor between them. That is why Monte Carlo is essential in decumulation: the method tests thousands of possible sequences and returns a success rate, not an average. A FIRE plan that has not been stress-tested in Monte Carlo is not a plan, it is a bet on luck.
Key Takeaways
- 1A crash in the first 5-10 years of retirement is the #1 risk in FIRE.
- 2Selling assets at a loss to live on starves your portfolio of the recovery.
- 3Bond tent: overweight bonds in the first 5 years, then glide back into stocks.
- 4Bucket strategy: 3 buckets (cash 2-3y, bonds 5-7y, stocks long-term).
Keep going
Frequently asked questions
It's the risk that a major crash hits in the first 5-10 years of your retirement, forcing you to sell assets at a loss to live on. This starves your portfolio of the recovery and accelerates depletion. Two retirees with the same average return can end up with radically different outcomes depending on the year order.
During accumulation, you buy on the dip, so volatility helps. During decumulation, you sell shares each year to live on: if the market drops 30% in year 1, you sell 1.4× more shares for the same income. Those low-priced shares will not participate in the recovery, durably eroding capital.
Three levers: (1) Bond tent: overweight bonds (50-60%) for the first 5 years, then glide back to 70/30. (2) Bucket strategy: a 2-3 year cash reserve plus 5-7 years of bonds to avoid selling at the bottom. (3) Spending flexibility: cut spending by 10-15% on drawdowns greater than 20%.
Partially. The Trinity Study (1998) models historical sequences from 1926 to 1995, including 1929 and 1973, so it already captures this risk. For FIRE plans of 40+ years (vs 30 years in Trinity), dropping to 3-3.5% adds extra margin.