401(k) Match

A match is the most common form of employer money in a 401(k), and the plan document spells out its formula. The formula has two parts: a match rate, the cents the employer adds for each dollar you defer, and a cap, the share of your pay that gets matched. In “50% of the first 6%”, the rate is 50% and the cap is 6% of pay, so the most the employer adds is 3% of pay. Some plans stack tiers, such as dollar for dollar on the first 3% of pay and 50 cents on the next 2%.

Only employees who defer get a match. Money the employer gives every eligible worker regardless is a nonelective contribution, one of the other employer contributions. Plans that match usually count Roth and pre-tax deferrals alike, and pay above $360,000 is ignored in 2026, so a very high earner’s match is capped in dollars too.

The match never uses your own $24,500 deferral limit for 2026. It counts instead toward the $72,000 limit on total additions, which covers your deferrals plus everything the employer adds; the contribution limits page shows how the two stack.

You need two numbers: the deferral rate that captures the full match, and the dollars it brings in. The full-match rate is the top of the highest matched tier. Below it, each extra 1% of pay you defer earns the match rate on that 1%; above it, extra deferrals earn nothing more from the employer, though they keep the account’s tax advantages. Then check how the plan defines pay, since some plans match only base salary and leave out bonuses. Match money usually slips away in one of four ways.

A few formula shapes recur because the tax code rewards them. A safe harbor 401(k) must either match on a formula set in the law or give every eligible worker 3% of pay, and every required safe harbor dollar is fully vested when made; in exchange, the plan skips the annual ADP and ACP nondiscrimination tests. A qualified automatic contribution arrangement, which enrolls workers by default, has its own safe harbor match and may make you wait up to two years to vest. Other plans can choose any formula and any vesting schedule within the legal maximum. In a SIMPLE IRA, the standard employer match is set by law at up to 3% of pay.

A match is only fully yours once it vests. Outside safe harbor and SIMPLE plans, an employer can make you wait: the slowest schedules allowed are 100% after three years of service, known as cliff vesting, or 20% a year from year two to 100% after six years, known as graded vesting. Leave earlier and the unvested part is forfeited, which is why a generous match on a long vesting schedule can work as golden handcuffs.

Timing matters too. If you defer a large share of pay early in the year and reach the $24,500 limit by, say, September, a plan that matches each pay period stops matching when your deferrals stop. Plans that figure the match on the whole year’s pay, or that make a year-end true-up contribution, restore what you would have missed. Your summary plan description says which method applies, and it is worth reading before you front-load.

For plan years beginning after 2023, an employer may treat your qualified student loan payments as if they were deferrals and match them. The loan must have paid higher education costs for you, your spouse or a dependent, and you certify the payments each year. The match must use the same rate and vesting as the regular match, and the loan payments that count are capped at the deferral limit minus what you actually deferred. The option also exists in 403(b), governmental 457(b) and SIMPLE IRA plans.

Separately, a plan may now let you take a vested match as Roth money, so a match no longer has to land in the pre-tax side of your account. That match is taxable income for the year it is allocated to your account and is reported on Form 1099-R rather than your W-2, with nothing withheld, so you may need to raise your paycheck withholding or pay estimated tax. In exchange, it and its earnings can later come out tax-free like the rest of a Roth 401(k).