"How much do I need to retire?" usually gets answered with a big lump-sum number that's hard to picture. What actually matters is what that lump sum turns into every month — and that's a second calculation most tools skip.
Retirement savings projection calculator, the growth math
Starting with $50,000 saved at age 35, contributing $500/month, and earning a 7% average annual return, projected savings by age 65 reach $1,019,368.62 — thirty years of compounding turning steady contributions into a seven-figure balance.
4% rule retirement calculator, turning a lump sum into income
A balance alone doesn't tell you what you can actually spend. Applying a 4% withdrawal rate — a widely-cited guideline based on historical market analysis — to that $1,019,368.62 balance gives an estimated $40,774.74 in annual retirement income, or $3,397.90 a month.
Retirement income calculator, why the withdrawal rate isn't guaranteed
The 4% figure is a starting point, not a promise — it doesn't account for the sequence of market returns you'll actually experience, inflation, or how many years your retirement needs to last. Use a lower rate for a more conservative estimate, and revisit the numbers as your actual savings and market conditions change.
