How is the retirement balance calculated?

Monthly compounding: i = r ÷ 12, n = years × 12. FV = S × (1+i)^n + M × [((1+i)^n − 1) ÷ i].

What return rate is realistic?

US stocks have averaged ~10% nominal / ~7% real long-term; 60/40 portfolios commonly use 6–7%. Past returns do not guarantee future results.

Should I use real or nominal returns?

Use real (return − inflation) for today-dollar purchasing power, or nominal for the headline balance and remember inflation erodes it.

Does this account for taxes?

No. Treat as pre-tax for 401(k)/Traditional IRA, or as final value for Roth/post-tax. Withdrawal tax depends on account type and local law.

Retirement Savings Calculator

Project your retirement balance, total contributions, and total growth from current savings, monthly contributions, expected return, and time horizon.

Inputs

Current savings

USD

Monthly contribution

USD

Expected return rate

Years until retirement

Result

Future Retirement Balance

$812,897.93

30 years at 7%

Total Contributions$205,000.00

Total Growth$607,897.93

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Formula

i = r ÷ 12, n = years × 12 FV = S × (1+i)^n + M × [((1+i)^n − 1) ÷ i] Total Contributions = S + M × n Total Growth = FV − Total Contributions

How it works

A retirement savings calculator projects the future value of current savings plus monthly contributions, with monthly compounding.

Example

Example: $25,000 + $500/month at 7% for 30 years: FV ≈ $810,000. Contributions $205,000, growth $605,000.

Frequently Asked Questions

Disclaimer: Results are estimates for informational purposes only and should not be considered financial, medical, legal, or professional advice. Always consult a qualified professional before making decisions.