401(k) Calculator
A 401(k) can be one of your best tools for creating a secure retirement. Use this calculator to see why this is a retirement savings plan you cannot afford to pass up.
How the 401(k) calculator works
It grows your current balance plus your annual contributions and your employer's match at your expected return, year by year, while your salary rises — separating how much comes from you, your employer and investment growth.
Worked example: with current 401(k) balance of $25,000, annual salary of $70,000 and your contribution of 8.00%, the 401(k) calculator shows 401(k) at retirement (30 yrs) of $1,146,178.
- Your contributions
- $227,181
- Employer match
- $85,193
- Investment growth
- $808,803
- Projected balance
- $1,146,178
| Contribution rate | 401(k) at retirement (30 yrs) |
|---|---|
| 4.00% | $711,691 |
| 6.00% | $972,383 |
| 10.00% | $1,319,972 |
| 15.00% | $1,754,459 |
The formula
Each year: balance = (balance + your contribution + employer match) × (1 + return); the match is capped at the matched percentage of salary.
Results are estimates for educational purposes and are not financial advice. Confirm exact figures with your lender, plan administrator or advisor.
Questions about the 401(k) calculator
How does the employer match work?
Employers often match a share of your contribution up to a salary limit — for example 50% up to 6% of pay. That match is an immediate, guaranteed return.
How much should I contribute to my 401(k)?
At least enough to capture the full employer match — leaving it on the table is turning down free money. Many aim for 15% of income including the match.
What return should I assume?
A long-run figure for a diversified portfolio, often around 6–7% after inflation varies. Test a conservative rate too, since markets are uneven.
Is the 401(k) Calculator free to use?
Yes. Every calculator on FinCalculators is completely free, with no sign-up, login or paywall. You can run as many scenarios as you like.
How much will my 401(k) be worth at retirement?
It depends on contributions, employer match and returns. Saving $500 a month from age 30 at a 7% average return grows to roughly $570,000 by 65 — and adding an employer match can push it well past that. Model your own numbers above.
- 2026 Retirement Contribution Limits (401k, IRA, Roth) — 401(k), IRA and Roth limits with catch-ups, super catch-up and income phase-outs.
- 401(k) Withdrawal Rules & Early-Withdrawal Penalty — Age 59½, the 10% early penalty, the exceptions that waive it, and how withdrawals are taxed.
- What Your 401(k) Match Is Really Worth — Common match formulas converted to an equivalent raise and instant return.