Start with what you have saved, add a set amount each month until you retire, then see the monthly spending your savings can cover and whether anything is left.
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Your savings over time, in today's dollars
Constant-rate scenario math, not a forecast or advice. Real returns vary year to year, so real results can differ a lot. Contributions go in at the start of each month. Withdrawals come out on the same schedule and rise with inflation. Other income (if any) also rises with inflation and reduces how much you need from savings. Tax is a single flat rate you choose: on the whole withdrawal for a traditional account, on the gain above your average cost basis for a taxable account, and none for a Roth. Early-withdrawal penalties and required minimum distributions are not modeled.