A 401(k) is one of the most powerful retirement savings tools, especially when your employer offers matching contributions. This calculator projects how your balance could grow over time.
How to use this calculator
- Enter your current 401(k) balance.
- Enter your monthly contribution amount.
- Enter your employer match as a percentage of your contribution.
- Enter years until retirement and expected annual return.
- Enter the monthly contribution needed to receive your employer's full match.
- Review contribution quality, employer match, and projected balance.
Formula
Total monthly deposits include your contribution plus employer match at the stated percentage. Future value combines growth on the current balance with compound growth on monthly deposits at the expected annual return. Employer match caps and vesting schedules are not modeled.
Example
Starting with $25,000, contributing $500 per month with a 50% employer match ($250 extra) for 25 years at 7% return could grow to over $900,000, with contributions making up a fraction of the total.
Frequently asked questions
Are employer match caps and vesting included?
No. This calculator applies your stated match percentage to every contribution for the full period. Real plans may cap match amounts and require vesting before employer funds are fully yours.
How much employer match should I assume?
Common matches are 50% of contributions up to 6% of salary, or 100% up to 3%. Enter the match percentage that reflects your employer plan.
Are 401(k) withdrawals taxed?
Traditional 401(k) withdrawals are taxed as ordinary income in retirement. This calculator shows projected balance before taxes.