401k Employer Match Calculator
See exactly how much free money your employer match is worth, what contribution rate unlocks the full match, and how much you leave on the table if you under-contribute. Works with common match formulas like 100% up to 3% or 50% up to 6%.
How the 401k Employer Match Works
A 401k employer match is money your company adds to your retirement account based on what you contribute from each paycheck. The most common formula is a partial match on the first few percent of your salary — for example, 50% of your contributions up to 6% of pay (which maxes out at a 3% employer contribution) or 100% up to 3% of pay. This calculator takes your salary, your contribution rate, and the match formula, then shows the annual employer contribution, what you need to contribute to capture the full match, and how much potential match you would forfeit at your current rate.
Why Getting the Full Match Matters
The employer match is the highest-return, lowest-risk investment available to most workers. A 100% match is an instant 100% return on your contribution before any market gains. Leaving even 1% of match on the table usually costs a typical earner several thousand dollars per year — and compounded over 30 years at 7% average returns, a missed $2,000 annual match becomes roughly $200,000 of lost retirement wealth. That is why advisors universally recommend contributing at least enough to capture the full match before funding any other retirement account.
Vesting Schedules and True Match Value
Not all employer match dollars are immediately yours. Many 401k plans use a vesting schedule — cliff vesting (100% after 3 years), graded vesting (20% per year for 5 years), or immediate vesting. If you leave before fully vested, you forfeit the unvested portion. Before declining a job offer with a better match, check the vesting rules. A 6% match with 5-year graded vesting and a short tenure can be worth less than a 3% fully vested match at a more stable employer.
Common Match Formulas and How to Maximize Them
Typical corporate 401k match formulas include: (1) 100% match up to 3% of salary, (2) 50% match up to 6% of salary, (3) 100% on the first 3% plus 50% on the next 2%, and (4) a flat 3-5% non-elective contribution. For formula 2, you must contribute 6% of your own salary to get the full 3% match — contributing only 3% yourself captures just half the available match. This calculator helps you find the minimum contribution rate that unlocks every dollar your employer offers.