Buffett 90/10

90% in a US index fund and 10% in short-term government bonds, the mix Warren Buffett said he would leave in trust for his wife.

What it holds

AssetShare
US stocks, whole market90%
US Treasury bills10%

How it did, 1926-07 to 2026-09

6.7%
Per year after inflation (9.9% before)
16.5%
Volatility
-73%
Worst drop, 1929 to 1932
3.35%
Safe withdrawal rate over 30 years, 3.92% over 20

Best and worst calendar years

BestReturn
1933+53.6%
1954+45.0%
1935+40.3%
1958+40.0%
1928+35.5%
WorstReturn
1931−39.3%
2008−33.1%
1937−31.5%
1930−25.6%
1974−24.4%

Open in the backtest tool Test a withdrawal rate

US dollars, rebalanced yearly, before tax and fund costs. Past results are not a promise about the future, and nothing here is investment advice.