401k Match Calculator
Calculate the actual employer 401(k) match you receive after vesting, given your contribution rate and plan rules. Use this when comparing job offers or deciding how much to contribute.
About this calculator
A 401(k) employer match is essentially free money, but the amount you actually keep depends on your contribution level, the employer match percentage, the match cap, and your vesting percentage. The formula is: Vested Match = (employeeSalary × employeeContributionPercent / 100) × (matchPercent / 100) × min(employeeContributionPercent, matchCap) / matchCap × (vestingPercentage / 100). The min(employeeContributionPercent, matchCap) / matchCap term ensures the match scales proportionally up to the cap but never exceeds it. Vesting percentage reflects how much of the employer contribution you have legally earned — graded vesting schedules typically vest 20% per year over six years. Contributing at least up to the match cap is generally considered the highest-return investment available to an employee.
How to use
Salary: $70,000. Employee contributes 6%. Employer matches 50% up to a 6% cap. Vesting is 80%. Step 1 — Employee contribution: $70,000 × 6% = $4,200. Step 2 — Match rate applied: $4,200 × 50% = $2,100. Step 3 — Contribution equals cap (6% = 6%), so the cap ratio is 6/6 = 1.0. Step 4 — Apply vesting: $2,100 × 1.0 × 80% = $1,680. The employee receives $1,680 in vested employer match this year.
Frequently asked questions
What does a 401k employer match cap mean and how does it affect my contributions?
The match cap sets the maximum percentage of your salary that the employer will match contributions on. For example, if your employer matches 50% up to 6% of salary, contributing 10% still only earns you the same match as contributing 6%. Contributing at least up to the cap is critical to capturing the full match; contributing below the cap means leaving free money on the table proportional to the shortfall.
How does a graded vesting schedule affect how much of the 401k match I actually keep?
With graded vesting, you earn ownership of your employer's contributions over time — commonly 20% per year over five or six years. If you leave after two years with a six-year graded schedule, you might only keep 40% of the employer contributions made on your behalf. Cliff vesting works differently: you own 0% until a specific tenure milestone, then 100% instantly. Always check your plan document before changing jobs to avoid forfeiting unvested funds.
How do I maximize my employer 401k match to get the most out of my benefits?
The simplest rule is to contribute at least enough to capture the full employer match — this is your match cap percentage. Beyond that, consider contributing up to the IRS annual limit ($23,000 in 2024, $30,500 if age 50+) if your budget allows, since 401(k) contributions reduce your taxable income. If you have multiple competing financial priorities, the employer match effectively represents a guaranteed 50–100% return on the matched portion, making it the highest-priority investment for most employees.