Retirement Income Calculator
A simple, free retirement income calculator to estimate how long your savings will last and plan your withdrawal strategy. Perfect for individuals approaching or in retirement. No Signup Required.
Retirement Income Calculator
This calculator is for illustrative purposes only and does not guarantee investment results.
Past performance is not indicative of future returns.
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Did You Know?
The concept of retirement is relatively modern, emerging widely only in the 20th century. Before Social Security was established in 1935, approximately 78% of Americans over 65 were still working. Today, the average retirement length has expanded to 20+ years as life expectancy increases. Interestingly, the "4% rule" for retirement withdrawals was developed in 1994 by financial advisor William Bengen, who found that no historical 30-year period would have depleted a portfolio with this withdrawal rate. However, recent studies suggest this rate may need adjustment in today's low-yield environment.
Technical Insight
Retirement calculators use Monte Carlo simulations to model thousands of potential market scenarios rather than linear projections. These simulations incorporate sequence-of-returns risk—the impact of when market downturns occur during retirement. Early negative returns can devastate a portfolio even if long-term averages appear sufficient. Modern calculators employ stochastic modeling with log-normal distribution of returns and autocorrelation factors to better represent market behavior. Some advanced models also incorporate mortality tables to calculate the probability of outliving your money, creating a more comprehensive picture than simple compound interest formulas.