Guide section
How it works
In simplified terms, the rule suggests withdrawing 4% of your starting portfolio in year one and then adjusting that dollar amount for inflation over time.
That makes it a useful bridge between annual spending and a rough retirement number.
Guide section
Why it is not a guarantee
The original research was not a promise for every market environment or every retirement length.
Valuations, fees, taxes, spending flexibility, and sequence risk all affect what is actually sustainable.
Bottom line
Where this guide should leave you
The 4% rule is a valuable starting point. It becomes more useful when paired with scenario testing and a more detailed withdrawal model.
Related calculators
Model this idea with your own numbers.
Related guides
Keep reading from here.
Retirement income planning
Think beyond one portfolio number and map how spending may be covered year by year.
Why read this
Retirement income planning is the bridge between a savings target and a usable life after work.
Sequence of returns risk explained
Understand why poor early retirement returns can be more damaging than poor returns later on.
Why read this
Sequence risk is one of the biggest reasons retirement drawdown planning is more fragile than accumulation planning.