A 401(k) match is money your employer deposits into your retirement account based on what you contribute from your own paycheck. The most common setup pays a full dollar for every dollar you put in up to the first 3% of your salary, then 50 cents per dollar on the next 2%, but formulas vary widely from one employer to the next. For 2026, federal law caps your personal contributions at $24,500 and total combined deposits (yours plus the match) at $72,000.1Internal Revenue Service. COLA Increases for Dollar Limitations on Benefits and Contributions
How Matching Formulas Work
Every formula has two moving parts: a matching rate and a salary cap. The rate says how much the employer contributes per dollar you contribute. The cap says at what percentage of your gross pay the match stops.
A plan with a 100% match up to 6% of salary pays a dollar for every dollar you put in, but only on the first 6% of your earnings. Earn $60,000 and contribute 6% ($3,600), and the employer adds $3,600. Contribute 10% and the employer still adds $3,600, because the match caps at 6%. A 50% match up to 5% of salary works the same way at half the rate: contribute 5% of a $30,000 salary ($1,500) and the employer adds $750.2Internal Revenue Service. Matching Contributions in Your Employer’s Retirement Plan
Some employers use tiered formulas that blend both approaches. A plan might match 100% on the first 3% of your salary and 50% on the next 2%. On an $80,000 salary, contributing at least 5% ($4,000) gets you $2,400 from the first tier plus $800 from the second, for $3,200 in total match. The exact terms are in your plan document, and the math is worth running before you set your contribution rate.
2026 Contribution Limits
Federal law sets several overlapping ceilings on how much money can go into a 401(k) each year. They’re adjusted annually for inflation.
- Elective deferral limit ($24,500). This is the most you can personally contribute from your paycheck in 2026 if you’re under 50. It applies only to your contributions, not the employer’s.3Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026
- Total annual addition limit ($72,000). This cap covers everything going into the account: your contributions, the employer match, and any other employer contributions combined. The limit is the lesser of $72,000 or 100% of your compensation.1Internal Revenue Service. COLA Increases for Dollar Limitations on Benefits and Contributions
- Compensation limit ($360,000). Your employer can only calculate matching contributions based on the first $360,000 of your salary. If you earn $500,000, the extra $140,000 is invisible for matching purposes.1Internal Revenue Service. COLA Increases for Dollar Limitations on Benefits and Contributions
Catch-Up Contributions
If you’re 50 or older, you can contribute above the standard $24,500 limit. For 2026, the catch-up amount is $8,000, bringing your personal maximum to $32,500. Workers aged 60 through 63 get a larger “super” catch-up of $11,250 under the SECURE 2.0 Act, pushing their personal ceiling to $35,750. At 64, you drop back to the standard $8,000 catch-up.3Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026
Catch-up contributions count toward the $72,000 total annual addition limit. So a 62-year-old contributing $35,750 could still receive up to $36,250 in employer contributions before hitting the combined ceiling.
When the Match Actually Becomes Yours
Your own contributions belong to you the moment they leave your paycheck. Employer matching contributions are different. Most plans require you to stay with the company for a set period before you fully own the matched funds. That process is called vesting.4Office of the Law Revision Counsel. 26 USC 411 – Minimum Vesting Standards
Federal law gives employers two options for defined contribution plans like 401(k)s. Under cliff vesting, you own 0% of the employer match until you complete three years of service, then jump to 100% ownership all at once. Under graded vesting, ownership rises on a schedule: 20% at year two, 40% at year three, 60% at year four, 80% at year five, and full ownership at year six.4Office of the Law Revision Counsel. 26 USC 411 – Minimum Vesting Standards Those are the statutory maximums. Many employers vest faster, so check your plan document.
Safe Harbor Plans Vest Immediately
If your employer sponsors a safe harbor 401(k), matching contributions are typically 100% vested the moment they hit your account. Immediate vesting is one of the trade-offs employers accept to avoid nondiscrimination testing. The exception is a plan using a Qualified Automatic Contribution Arrangement (QACA), where safe harbor matches can be subject to a two-year cliff vest.5Internal Revenue Service. Issue Snapshot – Vesting Schedules for Matching Contributions
What Happens to Unvested Funds When You Leave
If you leave your job before fully vesting, the unvested portion of the match is forfeited. That money doesn’t go into the company’s general accounts. Federal rules require forfeitures to stay inside the retirement plan, where they reduce the employer’s future contributions, cover plan administrative expenses, or get redistributed to remaining participants. The employer cannot pocket forfeited funds.
The forfeiture usually happens when you take a distribution after leaving, or if you fail to work at least 500 hours for five consecutive plan years. If you’re close to a vesting milestone and thinking about a job change, run the numbers on what you’d walk away from.
Don’t Lose Match Money to a Missing True-Up
Most employers calculate the match each pay period, not at year-end. That creates a trap if you contribute aggressively early in the year. Hit the $24,500 annual limit by September, your contributions stop, and the match stops with them. You miss out on matching for the remaining pay periods.
A true-up provision fixes this. At year-end, the employer compares what it actually matched against what the full annual formula would have paid, then makes a supplemental contribution to cover any shortfall. Not every plan includes a true-up, and employers aren’t required to offer one.
If your plan doesn’t have one, spread your contributions evenly across all pay periods. Divide the annual limit by the number of paychecks you receive, and set your deferral rate to hit that target. Some of your contribution then flows into the plan every pay period, and the match flows with it. Ask HR or your plan administrator whether the plan reconciles matches at year-end.
Pre-Tax vs. Roth Treatment of the Match
Employer matching contributions have traditionally gone in on a pre-tax basis, whether your own contributions are traditional or Roth. The match sits on the pre-tax side of your account, grows tax-deferred, and you pay ordinary income tax on it when you withdraw in retirement. Employer contributions are also exempt from Social Security and Medicare taxes when made.
The SECURE 2.0 Act added a new option starting in late 2022: plans can now let you designate employer matching contributions as Roth.6Internal Revenue Service. SECURE 2.0 Act Changes Affect How Businesses Complete Forms W-2 Elect Roth treatment and the matching contribution is included in your taxable income for that year, reported on a Form 1099-R. The trade-off is that qualified withdrawals in retirement come out tax-free, including growth. Not every plan has adopted this feature; ask your plan administrator whether it’s available.
Choosing between the two depends on whether you expect your tax rate to be higher now or in retirement. Early-career workers in a lower bracket often come out ahead paying the tax now and letting decades of compounding grow tax-free. In peak earning years, the pre-tax default may save more.
Student Loan Payments Can Trigger a Match
Under Section 110 of the SECURE 2.0 Act, employers can treat your qualified student loan payments as if they were 401(k) contributions for matching purposes. You could receive an employer match even if every spare dollar goes toward student debt rather than into the retirement plan itself. The provision took effect for plan years beginning after December 31, 2023, but your employer must specifically adopt it. Standard vesting schedules and contribution limits still apply to these matches.
How to Check Your Plan and Capture the Full Match
The single most useful document for understanding your match is the Summary Plan Description (SPD). Federal law requires your employer to provide it, and it must spell out the matching formula, eligibility requirements, vesting schedule, and any waiting periods before you can participate.7Internal Revenue Service. 401(k) Resource Guide – Plan Participants – Summary Plan Description If you don’t have one, ask HR. Your plan administrator is legally required to provide it within 30 days of your request.
Once you have the SPD, the math is simple. Find the matching formula (the rate and the salary cap), multiply the cap percentage by your gross salary, and that’s the contribution level you need to hit to capture the full match. If your plan matches 50% of the first 6% and you earn $75,000, you need to contribute at least 6% ($4,500) to get the maximum match of $2,250. Contributing less than 6% means declining part of your compensation.
After enrolling, confirm that your payroll deductions are actually flowing into the plan and that matching contributions appear on your statements. Errors happen more often than you’d expect, especially after job changes, salary adjustments, or mid-year enrollment. Most providers offer online portals where you can verify contributions in real time. If something looks off, raise it with your plan administrator before the end of the plan year, when corrections become significantly more complicated.