Asset allocation: the lever that drives 90% of your return
Splitting your money across stocks, bonds, real estate and cash is the decision that drives 90% of your long-term return. More than picking the right ETF, more than market timing. Before hunting for the 'right stock', set your allocation.
The 4 mixes that cover 95% of FIRE plans
Four allocations dominate the literature and real-world portfolios. Each one matches a different time horizon and a different pain threshold. Find yours below.
The age rule: '110 - your age = % in stocks'
At 30, 80% in stocks. At 50, 60%. At 70, 40%. Logic: the younger you are, the better you absorb a crash, because you have time to erase it. A starting point, not a truth.
The major allocation profiles
- 100/0: return ~10%/yr, volatility ~16%. For young investors with 20+ years ahead.
- 80/20: return ~9%, volatility ~13%. The FIRE sweet spot during accumulation.
- 60/40: return ~8%, volatility ~10%. The classic, ideal for decumulation.
- 40/60: return ~6%, low volatility. For those near retirement.
Example: the impact on your FIRE
Same starting capital ($50,000), same contributions ($500/month), 25-year horizon. With 100% stocks (10%): ~$680,000. With 60/40 (7.5%): ~$510,000. Difference: $170,000, about a 5-year head start toward FIRE. The flip side: in 2008, 100% stocks lost -38% while 60/40 only lost -22%.
β οΈ Wrong allocation can break a good plan
Copying an allocation without matching your horizon and risk tolerance often leads to panic selling at the worst moment. A mathematically optimal allocation that is behaviorally unbearable is still a bad allocation.
Key Takeaways
- 160% stocks + 40% bonds = the standard return/risk balance.
- 2Age rule: 110 β age = % stocks (30 yrs β 80%, 50 yrs β 60%).
- 3Aim 80/20 or 90/10 in accumulation. In decumulation, glide path to 60/40.
- 4100% stocks vs 60/40 over 25 years: ~$170k gap, equivalent to ~5 years earlier FIRE.
Keep going
Frequently asked questions
In a long accumulation phase (15+ years), 80-100% stocks maximizes the expected compound return (~7-8% real). Over 25 years, 100% stocks vs 60/40 generates ~33% more capital for the same effort, i.e., 5 years earlier FIRE. The cost: high volatility (drawdowns of -40%).
Global ETF (MSCI World, FTSE All-World) is the FIRE standard: instant diversification, low fees (0.15-0.30%/yr), no stock-picking. Individual stocks add unrewarded risk (specific volatility without extra expected return) and require substantial research.
Classic glide path: 90/10 until T-10, 80/20 at T-7, 70/30 at T-3, 60/40 at FIRE. The 'bond tent' from Pfau and Kitces goes further: peak bonds (50-60%) in the first FIRE year, then glide back to 70/30. Goal: neutralize sequence risk.
0-30% in accumulation (mild brake on return), 30-50% in decumulation (stabilizer). Short government bonds (1-5y) protect during recessions; long bonds suffer in inflation. In the eurozone, diversified bond ETFs (Bund, OAT, BTP) are enough for most plans.