Retirement Calculator
See how long your savings will last based on your expenses, contributions, and Social Security.
Results update in real time as you type.
Projected savings at retirement
1.5M
$1,475,835
Monthly retirement budget
Living expenses
$4,000
+ taxes (25%)
$1,000
Gross monthly need
$5,000
Social Security offset
−$1,800
Monthly from savings
$3,200
The full planner runs Monte Carlo simulations with a success rate — this free tool is a single-path estimate.
$260,000
Total contributed
$1,215,835
Total growth
35
Years to retire
The math runs entirely in your browser — the numbers you enter are never sent to our servers. They’re saved only on this device so they’re still here when you come back.
How this retirement calculator works
Before retirement, the calculator grows your current savings at your chosen annual return divided by 12, then adds your contribution at the end of each month. After retirement, it applies that same monthly return and subtracts your spending need after Social Security and pension income. The chart shows yearly balances through age 95.
An example with real numbers
Set your current age to 60, retirement age to 65, savings to $100,000, monthly contributions to $500, and annual return to 6%. After 60 months at 0.5% per month, the projected nest egg is $169,770, rounded to the nearest dollar: $130,000 contributed in total and $39,770 in modeled growth. The 6% return is an illustration, not a prediction.
With monthly expenses of $3,000 and a 25% tax allowance, this tool sets aside $3,750 for spending and taxes. If $1,500 of Social Security starts at age 65 and your monthly pension is $500, savings supply the remaining $1,750 per month. Keep spouse/partner income off to reproduce this example.
Assumptions and how to read the result
- The tax input adds a percentage to expenses; it does not calculate your tax return or different tax treatment for Roth savings, Social Security, and pensions.
- Enter spending in retirement-year dollars.
- Expense presets use 3% annual inflation up to retirement, but the projection holds spending and benefits flat after that.
- Pension income starts at retirement, and spouse/partner Social Security starts at the primary person’s age you select on the shared timeline.
A balance remaining at 95 means the money lasts in this one assumed path; it is not a probability of success. A depletion age means these inputs exhaust savings in the model. Try a lower return, higher spending, or a later retirement age to see which assumptions matter most. For context, read when you can retire and how much you need to retire.
This is just the starting point
Beyond Payday’s advanced retirement planner builds on your actual accounts — 401(k)s, IRAs, and more — with inflation, tax estimates, year-by-year income projections, and what-if scenarios, so you can plan with confidence.
Get Your Detailed PlanNo credit card required • Eligible new accounts start with 30 days of Pro free — after that, the Free plan is yours, no charge.
Disclaimer: This calculator is a simplified tool for educational and informational purposes only. It uses a constant return, a simplified percentage allowance for taxes, and fixed spending and benefit amounts during retirement. It does not model market volatility, inflation during retirement, investment fees, or account-specific taxation. Actual results will vary. Social Security and pension benefits shown are rough estimates — visit ssa.gov for a personalized Social Security estimate. Consult a qualified financial advisor before making retirement decisions.