Project your retirement nest egg and the monthly income it can fund — in today's dollars.
Plan your retirement in the United States. Estimate the nest egg you'll have at retirement age (typically 65–67) based on current savings, monthly contributions, expected investment returns and inflation. See the inflation-adjusted value, the sustainable monthly income it can fund and how Social Security plus a 401(k) fits in.
This free retirement calculator projects how big your nest egg will be at retirement and how much sustainable monthly income it can fund — in today's dollars after inflation. Enter your current age, target retirement age (typically 65–67 in the United States), current savings, monthly contributions and expected return, and instantly see whether you're on track. Model 401(k), IRA and brokerage savings together, layer in Social Security, and stress-test against higher inflation, longer life expectancy or a different retirement age.
FV = PV × (1 + r)ⁿ + PMT × [((1 + r)ⁿ − 1) ÷ r] Real value = FV ÷ (1 + i)ⁿ
A 35-year-old with $100,000 saved who contributes $1,000/month for 30 years at a 7% nominal return retires at 65 with about $1.32 million. Adjusted for 3% inflation that's roughly $545,000 in today's dollars — enough to safely withdraw about $2,200/month for 25 years (using the 4% rule), on top of an estimated Social Security benefit of $1,800–$2,400/month for the average US worker.
Your current savings compound at the pre-retirement annual return until your retirement age. Monthly contributions are added each month and compounded at the same rate, with an optional annual step-up. The result is the nominal corpus at retirement.
It's the corpus expressed in today's purchasing power. We discount the nominal corpus by your assumed inflation rate over the years to retirement: real = nominal / (1 + inflation)^years.
Using the present-value annuity formula on the real (inflation-adjusted) post-retirement return — the monthly amount that depletes the real corpus exactly over the years in retirement. We also show the equivalent first-year nominal withdrawal so you can plan in either lens.
Long-term US equity-heavy portfolios (e.g. an S&P 500 index) have historically returned about 7–10% nominal (4–7% real after inflation). After retirement a more conservative 5–7% is typical as the mix shifts to bonds and income. Use conservative assumptions when planning — better to be over-prepared than to come up short.
Even a modest 3% annual inflation rate steadily erodes purchasing power. At that pace, your money's value is effectively cut in half roughly every 24 years. For example, $1 million 30 years from now may only have the same buying power as about $400,000 today. That's why it's important to look beyond the nominal value of your savings and focus on their real (inflation-adjusted) value when planning for the future.
No. The calculator focuses on pure investment growth and withdrawals. Taxes on withdrawals (ordinary income tax on Traditional 401(k) / IRA, long-term capital gains on brokerage accounts) and Social Security benefits should be modelled separately and added to your monthly income figure.
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