Order beats average
Two retirees with identical average returns can finish bankrupt and wealthy. When the bad years arrive is what separates them.
Accumulation is the easy half. Turning a portfolio into a reliable paycheque involves irreversible decisions made under uncertainty: when to claim Social Security, which Medicare parts to enrol in and when, how fast to convert tax-deferred money, and what order to spend from. Get the sequencing right and the same portfolio lasts materially longer.
Several of these are one-way doors. Sequence matters because each choice narrows the options available to the next.
Two retirees with identical average returns can finish bankrupt and wealthy. When the bad years arrive is what separates them.
Running out of money at 92 is worse than earning slightly less at 70. Insure the tail rather than optimising the median.
Stale beneficiary forms, unfunded trusts and accounts nobody can find cause more damage than genuine legal disputes.