Retirement Savings: Turn "Enough" Into an Actual Number
Most people planning for retirement carry a vague worry that they'll need "a lot" saved up, without knowing exactly how much. Simply multiplying today's monthly expenses by the number of retirement years misses two things. First, inflation: twenty or thirty years from now, the same dollar amount buys less, so your target expense needs to be projected forward to retirement-year prices. Second, your money keeps earning a return even after you retire, so the real return, meaning your investment return minus inflation, changes how large a nest egg you actually need.
This calculator takes your target monthly expense, years until retirement, expected years in retirement, inflation rate, and expected post-retirement return, then reverse-calculates the total nest egg required at retirement using a present-value annuity approach. Add your expected pre-retirement investment return, and it also shows the monthly savings needed starting today to hit that target.
Actual returns and inflation vary year to year, and other factors like Social Security income and changing spending patterns in retirement also play a role, so treat this as one scenario among several worth running. Revisit the numbers periodically and adjust your savings and investment plan as your situation changes.
Frequently Asked Questions
Your current target monthly expense is inflated to retirement-year dollars, then the difference between your expected post-retirement return and inflation (the real return) is used to reverse-calculate the total nest egg needed for your retirement years, using a present-value annuity method.
Twenty or thirty years from now, the same dollar amount buys less. Skipping inflation in the calculation understates the nest egg you actually need, which can leave you underprepared for retirement.
Yes. Once your required nest egg is calculated, the tool also shows the monthly savings needed between now and retirement, assuming you invest that amount at your expected accumulation-period return.