Start with your spending gap
Retirement targets differ because housing costs, pensions, healthcare needs and lifestyle differ. This model subtracts relatively stable retirement income from desired spending and uses a planning withdrawal rate to estimate the asset base needed to cover the remaining gap.
A round-number target is only an example
A 4% planning rate produces a different target from 3% or 3.5%. The rate is a scenario input, not a promise that a portfolio will sustain withdrawals indefinitely.
Keep inflation visible
The calculator converts today’s purchasing-power target into a future nominal target so that a dollar amount twenty years from now is not confused with the same amount today.
