Most Americans vastly underestimate how much money they need to retire comfortably, leading to a frantic panic in their late 50s. If you plan to rely entirely on Social Security, you are planning for poverty. To retire with dignity, you must build a self-sustaining investment portfolio. Our retirement calculator uses compound growth mathematics to show you exactly how large your nest egg will become, and whether it will be enough.
How do you know if you have enough money to quit your job forever? You use the 4% Rule (based on the famous Trinity Study).
The rule states that if you invest your money in a balanced portfolio of stocks and bonds, you can safely withdraw exactly 4% of your total balance in Year 1 of retirement, adjust that dollar amount for inflation every year thereafter, and theoretically never run out of money for 30 years.
To find out exactly how much money you need to retire, take your desired annual retirement income and multiply it by 25.
If you need $60,000 a year to live comfortably: $60,000 x 25 = $1,500,000.
If you need $100,000 a year to live comfortably: $100,000 x 25 = $2,500,000.
This is your target nest egg. Use the calculator above to see if your current savings rate will actually get you to this number before age 65.
A million dollars today sounds like a lot of money. But a million dollars in 30 years will have significantly less purchasing power. Historically, inflation averages about 3% a year.
When using the retirement calculator, it is crucial to use an inflation-adjusted return rate. Historically, the S&P 500 returns roughly 10% per year before inflation. If you subtract a 3% inflation rate, your "real" return is roughly 7%. By using 7% in the calculator instead of 10%, the final number you see will be shown in today's purchasing power, making it much easier to understand your true future wealth.
If you leave your retirement savings in a standard checking account or under a mattress, you are guaranteed to lose money to inflation. You must utilize tax-advantaged accounts:
If you are behind on your savings and you are 50 or older, the IRS allows you to make "Catch-Up Contributions." In 2026, you are allowed to contribute thousands of extra dollars into your 401(k) and IRA beyond the standard limits. If your calculator projection shows you falling short, utilizing these catch-up limits is your most powerful tool to close the gap.
If you want to join the FIRE movement (Financial Independence, Retire Early) and quit your job in your 30s or 40s, standard retirement calculators will not work for you. You need our specialized FIRE planner.
Go to FIRE CalculatorThe 4% Rule is a retirement benchmark stating that if you invest your money in a balanced portfolio (like 60% stocks and 40% bonds), you can withdraw 4% of the total balance in your first year of retirement. You then adjust that dollar amount for inflation every year, and theoretically, your money will last for at least 30 years without running out.
Visualize your path to financial freedom. Adjust your contributions, expected returns, and inflation to see exactly what you need to retire comfortably.
Nest Egg at Age 65
$728,659
Adjusted for 2.5% inflation
Balance at Age 90
$857,606
4% Safe Withdrawal Rate