what is left at the end
The backtest is a chart, and it is also a table. One row per start year: whether it kept its spending, the lowest balance it ever hit, and the ending. Sort it, read it, export it.
You asked for the link. The planner every chart came from is one tap away; the slides are below if you want them again.
Open the planner Type in one paycheck. About three minutes, in the browser.
Where to go next
Type in one paycheck and it runs your plan through every year of market history since 1871, with the taxes worked out. About three minutes, in the browser.
Open itSources: Backtest table, 81 start years since 1871. Plan: $65,000 at 25, retiring at 65 on $55,000.; Shiller monthly series 1871-2026.; Engine output. Endings: worst $2.4M, middle $5.76M, best $10.9M, 2026 dollars..