401(k) Employer Match: How to Calculate 50% Up to 6% With Worked Examples

A "50% up to 6%" 401(k) match means your employer adds 50 cents for every dollar you contribute — but only on the first 6% of your salary. Earn $80,000 and contribute 6% ($4,800), and your employer puts in $2,400 a year. That is the entire formula. The part people get wrong is what happens around the edges: contribute less than 6% and the match shrinks with it, contribute more and the match does not grow, and the match may not be fully yours until a vesting schedule runs its course.

The two numbers inside the formula

Every match formula has a rate and a cap. The rate (50%) is how many cents the employer adds per dollar you contribute. The cap (6% of salary) is the slice of your pay the employer will match against.

A frequent mix-up: "50% up to 6%" does not mean the employer adds 50% of your salary, and it does not mean it adds 6% of your salary. It means 50% of your contributions, on contributions up to 6% of your salary. Capture the full match and the employer effectively adds 3% of your salary — not 6%.

The calculation, step by step

The formula: employer match = 50% × the smaller of (your annual contribution, 6% of your salary).

Worked example with an $80,000 salary:

Step 1 — find the matchable base. 6% × $80,000 = $4,800. This is the most of your own money the employer will match against.

Step 2 — compare your contribution. Suppose you contribute 6%, or $4,800. Since $4,800 is not more than the matchable base, the full $4,800 counts.

Step 3 — apply the rate. 50% × $4,800 = $2,400 of employer match for the year.

Three scenarios at the same $80,000 salary

You contribute 3% ($2,400 a year). The employer matches 50% of $2,400, which is $1,200. You leave $1,200 of potential match on the table — money the employer was willing to give you.

You contribute 6% ($4,800 a year). The employer matches 50% of $4,800, which is $2,400. This is the full match. Contributing more will not raise it.

You contribute 10% ($8,000 a year). Only the first 6% ($4,800) is eligible for the match, so the employer still adds $2,400. The extra $3,200 is unmatched — it still goes into your account and can still grow, it just earns no match.

Per paycheck, if you are paid every two weeks (26 pay periods): gross pay of about $3,076.92, a 6% contribution of about $184.62, and an employer match of about $92.31 per paycheck.

What $2,400 a year becomes over time

The match is not just $2,400 — it is $2,400 a year that can compound for decades. At a hypothetical 7% annual return (an assumption for illustration, not a prediction — actual returns vary and can be negative):

After 20 years: about $98,389, built from $48,000 of employer contributions.

After 30 years: about $226,706, built from $72,000 of employer contributions — roughly $154,700 of that is growth on the match, not new money.

Want to test your own salary, contribution rate, and match? EquiFi's compound growth calculator lets you plug in the numbers and watch the curve bend.

Four rules most quick guides skip

1. The match is usually figured per paycheck. Most plans calculate the match each pay period rather than once at year-end. That creates a trap for aggressive savers: if you front-load contributions and hit the IRS annual deferral limit ($24,500 for 2026) before December, your contributions — and the matching — can stop for the remaining pay periods. Some plans fix this with a year-end "true-up" that tops up the match you should have received. Check your plan documents to see which kind you have.

2. The match may not be yours yet. Your own contributions always belong to you, but employer matching money often follows a vesting schedule. The IRS allows schedules ranging from immediate vesting up to a 3-year cliff (0% until year 3, then 100%) or a 6-year graded schedule (20% after 2 years, 40% after 3, 60% after 4, 80% after 5, 100% after 6). Leave before you are fully vested and the unvested part goes back to the plan.

3. There is a ceiling on the salary that counts. For 2026, the IRS lets employers calculate matches on only the first $360,000 of your pay. Below that level — where most people are — it does not change the math.

4. Your own contribution has its own cap. For 2026 you can defer up to $24,500 of your own pay ($8,000 more at 50+, or $11,250 more at ages 60–63 under SECURE 2.0). The employer match does not count against your $24,500 limit; it counts toward the separate $72,000 total for all contributions to your account.

Where to find your exact formula

Your employer's Summary Plan Description — usually on your plan recordkeeper's website or benefits portal — spells out the match formula, what counts as eligible pay (some plans include bonuses and overtime, others count base salary only), the vesting schedule, and whether there is a true-up. Read that before you change your contribution rate.

This article is for education only and is not financial advice. Plan rules vary; check your Summary Plan Description or talk with a qualified professional before making decisions.

Sources

• Internal Revenue Service — Retirement topics: 401(k) and profit-sharing plan contribution limits (2026 figures: $24,500 deferral limit, $72,000 total additions, $360,000 compensation limit)
• Internal Revenue Service — Retirement topics: Vesting (vesting schedules for employer matching contributions)
• LegalClarity — How to Calculate a 401(k) Match: Formulas and Limits (per-pay-period matching, true-up provisions)