Free 401(k) Calculator - Estimate Your Retirement Balance
Estimate your 401(k) balance at retirement and see how employer matching and compound growth impact your savings
Formula & Methodology
Calculates the future value of your current 401(k) balance plus the future value of your annual contributions and employer match, compounded annually.
- FV = P(1 + r)^t + PMT × [((1 + r)^t - 1) / r]
Worked Example
Using the 401(k) Growth Calculator: apply the formula above to your input values. For instance, FV = P(1 + r)^t + PMT × [((1 + r)^t - 1) / r]. The tool performs each step instantly and shows the result.
Frequently Asked Questions
How does employer matching boost my 401(k)?
A match is free money added to your contributions, so capturing the full match is one of the fastest ways to grow the balance.
Why does starting early matter so much?
Decades of compounding mean early contributions can grow into a far larger share of your final balance than contributions made near retirement.
What return should I assume?
Many people model a long-run average of 6-8% for a diversified portfolio, but real returns vary year to year, so try several rates.