An employer 401(k) match is one of the highest guaranteed returns you can earn — often 50% to 100% on every dollar you contribute, up to a cap. This 401k match calculator models any match formula: full match (dollar-for-dollar), partial match (e.g. 50 cents on the dollar), safe harbor match, or tiered formulas like '100% up to 3%, then 50% up to 5%'. Enter your salary, contribution percentage, and your plan's match rate and cap to see annual employer match dollars, money left on the table, the exact contribution % needed to capture the full match, and the long-term growth of those matching contributions compounded over your career.
% of salary you contribute
100% = $1 per $1
Max % of salary matched
Gross annual salary before taxes.
How much of your salary you contribute to 401(k).
Match rate (e.g. 100% or 50%) and cap (e.g. 6% of salary).
Years until retirement and expected return.
See employer match, money left on table, and long-term growth.
The employer matches a percentage of your contribution up to a cap. Example: 100% match up to 6% on a $60,000 salary — contribute 6% ($3,600) and the employer adds $3,600. Contribute only 3% ($1,800)? The employer adds only $1,800 and you leave $1,800 of free money on the table.
EmployerMatch = min(EmployeePct, MatchCap) × Salary × MatchRate
Always contribute at least up to the match cap — it's a guaranteed 50-100% return
Common formulas: 100% up to 3-6%, or 50% up to 6% (so 3% true cost to employer)
Safe harbor match: 100% on first 3% + 50% on next 2% = 4% total employer contribution at 5% employee
Even a 25% match is a 25% instant return — better than any stock
Check your vesting schedule — matches may not be fully yours for 3-6 years
Employer match dollars don't count against your $23,000 (2024) employee deferral limit
Roth 401(k) match is always deposited as Traditional (pre-tax) — you'll owe tax on that portion later
If you leave before vesting, you forfeit unvested match — factor this into job change decisions
An employer 401(k) match is the closest thing to free money in personal finance — yet an estimated 25% of employees fail to contribute enough to capture the full match, leaving billions of dollars on the table annually. Match formulas vary widely: the most common is 50% of employee contributions up to 6% of salary, effectively adding 3% of your pay to your retirement savings. A dollar-for-dollar match on the first 3-4% of salary is also common and even more generous. On a $75,000 salary with a 50% match on 6%, contributing at least $4,500 (6%) earns a $2,250 annual match — equivalent to a 3% raise that goes directly to your retirement fund. Our 401(k) match calculator computes your exact employer match based on your specific plan formula, contribution rate, and salary. It shows the match you are currently receiving, the maximum match available, how much additional contribution is needed to capture the full match, and the long-term impact of missed matching dollars on your retirement balance.
A full match (100%) means employer contributes $1 for each $1 you do, up to the cap. A partial match (50% is most common) means 50 cents per dollar. Both have caps — typically 3-6% of salary. The effective employer contribution is (Rate × Cap): a 100% up to 3% match = 3% of salary; a 50% up to 6% match = 3% of salary — same effective cost to the employer, but requires different employee behavior to capture.
Safe harbor plans provide a guaranteed employer contribution in exchange for bypassing annual nondiscrimination testing. The basic safe harbor match is 100% on first 3% + 50% on next 2% (so contributing 5% gets you 4% from the employer). Enhanced safe harbor is 100% up to 4% or more. All safe harbor contributions are immediately 100% vested.
Data sourced from trusted institutions
All formulas verified against official standards.