How does a 401(k) match work?
Your employer adds money to your 401(k) when you contribute, by a formula tied to your pay. With the most common formula, 50% of the first 6% of pay, putting in 6% of a $60,000 salary ($3,600) brings $1,800 from your employer, another 3% of pay. Put in 4% and the match is $1,200; anything above 6% isn't matched.
Tiered formulas match each slice of your pay at its own rate. The basic safe harbor match in the tax regulations, 100% of the first 3% of pay, plus 50% of the next 2%, adds $1,800 when you put in 3% of $60,000. Put in 5% ($3,000) and it adds $1,800 on the first 3% plus $600 on the next 2%, $2,400 in all: a match worth 4% of pay for contributing 5%.
| You contribute | 50% of the first 6% | 100% of the first 3%, plus 50% of the next 2% | 100% of the first 6% |
|---|---|---|---|
| 1% ($600) | $300 | $600 | $600 |
| 2% ($1,200) | $600 | $1,200 | $1,200 |
| 3% ($1,800) | $900 | $1,800 | $1,800 |
| 4% ($2,400) | $1,200 | $2,100 | $2,400 |
| 5% ($3,000) | $1,500 | $2,400 | $3,000 |
| 6% ($3,600) | $1,800 | $2,400 | $3,600 |
| 8% ($4,800) | $1,800 | $2,400 | $3,600 |
The point where a column stops growing is where your employer stops adding: contributing less than that leaves match on the table. Many plans match each paycheck rather than the year, which is why the calculator works paycheck by paycheck.
What is a typical 401(k) match?
The average employer match promised 4.7% of pay in 2025 and the median 4%, in Vanguard's How America Saves 2026. Getting all of it meant contributing 6.4% of pay on average, 6% at the median. The single most common formula was 50% of the first 6% of pay, used by 12% of plans with a match.
| Formula | Plans | Match worth | Contribute at least | On $60,000 |
|---|---|---|---|---|
| 50% of the first 6% of pay | 12% | 3% of pay | 6% | $1,800 |
| 100% of the first 3% of pay, plus 50% of the next 2% | 9% | 4% of pay | 5% | $2,400 |
| 100% of the first 6% of pay | 9% | 6% of pay | 6% | $3,600 |
| 100% of the first 5% of pay | 7% | 5% of pay | 5% | $3,000 |
| 100% of the first 4% of pay | 7% | 4% of pay | 4% | $2,400 |
Those five cover fewer than half of plans: Vanguard ran more than 100 distinct match formulas. 69% of plans with a match used a single rate, like 50% of the first 6%; 25% used tiers, like 100% of the first 3% plus 50% of the next 2%; and 5% capped the match in dollars, at $2,000 a year for example. Most promised a match worth from 3% to just under 7% of pay. Vanguard participants put in 7.6% of pay on average, 12.1% with employer money, per How America Saves 2026.
What is the 401(k) contribution limit for 2026?
You can put in up to $24,500 of your pay in 2026, up from $23,500 in 2025. From the year you turn 50 you can add $8,000 in catch-up contributions, $32,500 in all, or $11,250 instead in the years you turn 60 to 63, $35,750 in all. Your employer's match doesn't count toward those limits; it counts toward the $72,000 you and your employer can add together.
| Limit | 2026 | 2025 |
|---|---|---|
| What you can contribute from pay | $24,500 | $23,500 |
| Catch-up from age 50 | $8,000 | $7,500 |
| Catch-up at ages 60 to 63, instead | $11,250 | $11,250 |
| You and your employer together | $72,000 | $70,000 |
| Pay a plan can count for the match | $360,000 | $350,000 |
Two more rules matter for higher earners. If you earned more than $150,000 in Social Security (FICA) wages from your employer in 2025, any catch-up contributions you make in 2026 must go in as Roth, after tax. And a plan can only count the first $360,000 of your pay, so on a bigger salary the match is figured on $360,000. The figures come from IRS Notice 2025-67 and the IRS's announcement of November 13, 2025.
Reaching the limit early can cost match. Put 10% of a $300,000 salary into a plan that matches 100% of the first 6%, and you hit $24,500 with your October paycheck. A plan that matches each paycheck stops there, at $15,000 instead of $18,000. Some plans true up after the year ends and pay the rest; if yours doesn't, 8.1% of each paycheck spreads the limit over all twelve months.
How does 401(k) vesting work?
Your own contributions are always 100% yours, but your employer's match can vest over time: at most a 3-year cliff, where you own none of it until 3 years of service and all of it after, or a 6-year graded schedule that gives you 20% after 2 years and 20% more each year to 100% at 6. Safe harbor matches are yours as soon as they're paid in, except in automatic-enrollment (QACA) plans, which can take up to 2 years.
| Years of service | 3-year cliff | 6-year graded |
|---|---|---|
| 1 | 0% | 0% |
| 2 | 0% | 20% |
| 3 | 100% | 40% |
| 4 | 100% | 60% |
| 5 | 100% | 80% |
| 6 | 100% | 100% |
Plans can vest faster, and many do: nearly half of Vanguard plans vested the match immediately in 2025, while 22% used a 5- or 6-year graded schedule. Leave before you're vested and you forfeit the unvested part. You become fully vested at the plan's normal retirement age or if the plan ends. The schedules are in the IRS's guide to vesting for matching contributions.
What does missing the match cost by retirement?
Missing $1,000 of match a year adds up to about $57,100 over 30 years at a steady 4% return after inflation, and about $93,900 if returns match the S&P 500's 6.8% average after inflation since 1957. That's in today's dollars, and none of it would have come from your pay.
| Missed a year | 10 years at 4% | 20 years at 4% | 30 years at 4% | 30 years at 6.8% |
|---|---|---|---|---|
| $500 | $6,100 | $15,200 | $28,600 | $47,000 |
| $1,000 | $12,200 | $30,300 | $57,100 | $93,900 |
| $1,500 | $18,300 | $45,500 | $85,700 | $140,900 |
| $2,500 | $30,600 | $75,800 | $142,800 | $234,800 |
The 6.8% column uses the S&P 500's average return with dividends reinvested since 1957, after inflation, from Robert Shiller's data; the 4% column is a steadier mix of stocks and bonds. Both are the retirement calculator's scenarios.
How the calculator works
- A year is twelve monthly paychecks. Each puts your contribution rate of that month's pay into the plan until you reach the IRS limit for your age.
- Your employer matches each paycheck by its formula, counting pay up to $360,000 a year, then stops at any yearly dollar cap and at the $72,000 limit on you and your employer together.
- The contribution needed is the lowest, in steps of 0.1% of pay, that gets the most match a year of paychecks can earn. When a year-end true-up would pay more, the calculator says so.
- The match and your 401(k) grow monthly at your expected return after inflation, with the year's contributions going in a twelfth at a time. Pay and the IRS limits are assumed to rise with prices, so every figure is in today's dollars.