Plan your retirement. Calculate projected savings at retirement age based on current savings, monthly contributions, and investment returns.
The most widely used rule is the 4% Rule: at retirement, you can safely withdraw 4% of your portfolio per year and it should last 30+ years. To retire on $5,000/month ($60,000/year), you need 25× that amount: $1,500,000 saved at retirement.
The power of starting early is staggering. Investing $500/month at age 25 with a 7% return yields approximately $1.37 million by age 65. Starting at 35 with the same contribution yields only $609,000 — less than half, despite contributing for only 10 fewer years.
Tax-advantaged accounts are essential: a 401(k) lets you contribute up to $24,500/year (2026), often with employer matching. A traditional IRA contributes another $7,500/year. Contributions reduce taxable income now; withdrawals are taxed in retirement (or tax-free with Roth accounts).
Retirement calculators project current savings plus future contributions forward at an assumed return, then test the resulting nest egg against your expected spending. A common yardstick is the 4% rule: withdrawing 4% of the starting balance annually, inflation-adjusted, has historically lasted 30+ years.
A 35-year-old with $50,000 saved, contributing $500 monthly at 7% average return, reaches about $817,000 by 65. The 4% rule suggests roughly $32,700 of annual withdrawals on top of any pension or social security.
What return should I assume? Long-run diversified equity returns have averaged 7–10% nominal; conservative planning uses 5–7% and subtracts ~2–3% inflation for real terms.
Is the 4% rule guaranteed? No — it is a historical heuristic. Sequence-of-returns risk, longer lifespans and fees all matter; revisit the plan regularly.
The formulas and figures used by this calculator come from these published sources. Where a figure changes from year to year, the year it applies to is stated on the page.
Results are estimates for planning, not financial advice. Tax rules and rates vary by country and by personal circumstances.