401(k) Match Calculator
Updated August 2026 · Free · No sign-up
Calculate your employer 401(k) match — how much free money your contribution rate captures, what percentage you must contribute to get the full match, and exactly what leaving the match on the table costs.
Quick answer: The most common formula: 100% match on the first 3% of salary + 50% on the next 2% — contribute 5% and a $70,000 earner captures $2,800/year of free money ($3,500 own + $2,800 match). Contributing below the match threshold is declining part of your compensation.
How 401(k) Matching Works
An employer match is compensation you only receive if you contribute: the company deposits money into your 401(k) as a function of what you put in, up to a cap expressed as a percentage of salary. The two dominant structures:
| Formula | You contribute 6% of $70k | Match received | Full-match threshold |
|---|---|---|---|
| 100% of first 3% + 50% of next 2% | $4,200 | $2,800 (4% effective) | 5% |
| 50% of first 6% | $4,200 | $2,100 | 6% |
| 100% of first 4% | $4,200 | $2,800 | 4% |
| 100% of first 6% | $4,200 | $4,200 | 6% |
The single most important number is the full-match threshold — the contribution rate above which extra contributions earn no additional match. Contribute at least that much before anything else in your financial plan; it is an instant 50-100% return.
Worked Examples
Example 1 — capturing the full match. $70,000 salary, standard formula, contributing 5%: your $3,500 + employer's $2,800 = $6,300/year invested at a cost of $3,500 (less after tax savings).
Example 2 — the money left behind. Same plan, contributing only 2%: match = $1,400 (100% band only, partial). You left $1,400/year unclaimed — over 30 years at 7% growth, roughly $140,000 of retirement wealth declined.
Example 3 — the true cost of contributing. A 22%-bracket earner's 5% contribution ($3,500) reduces take-home only ~$2,730 (pre-tax) while $6,300 lands in the account — a 131% first-day return before any market growth.
Rules That Change the Math
- Vesting: the match may vest over 2-6 years (cliff or graded) — leaving early forfeits unvested match. Your own contributions are always 100% yours.
- Per-paycheck true-up: front-loading contributions can miss match in later paychecks unless the plan has a true-up provision — check before maxing early.
- Limits: employee deferral limits adjust yearly (check the current IRS figure); the match does not count against your employee limit but does count toward the overall combined limit.
- FICA still applies: 401(k) contributions skip income tax (traditional) but not Social Security/Medicare — details in the FICA calculator.
- Bonus deferrals: many plans allow a separate election on bonuses — pairing it with match rules is covered in the bonus tax calculator.
Match Strategy by Situation
- Tight budget: contribute exactly the full-match threshold — nothing less (free money), nothing more until high-interest debt is gone.
- After a raise: percentage-based contributions auto-scale, but revisit the election — bumping your rate by half the raise is painless wealth-building (the per-paycheck math is in the pay raise calculator).
- Job switching: compare match formulas as salary: 100%-of-6% vs 50%-of-6% on the same salary is a 3%-of-salary pay difference — and check the vesting schedule before timing your exit.
- Two-earner households: fund the better match first across both plans, then equalize.
Common Match Mistakes
- Contributing 0% during "tight months" — pausing a matched contribution is a 50-100% instant loss, worse than almost any debt interest saved.
- Assuming the default enrollment rate captures the match — auto-enrollment defaults (often 3%) frequently sit BELOW the full-match threshold (often 5-6%).
- Ignoring vesting before a switch — leaving 4 months before a cliff vest can cost thousands; factor it into offer comparisons alongside severance-style exit math.
- Front-loading without true-up — maxing by June can forfeit second-half match in per-paycheck plans.
Why the Match Beats Almost Everything
A 100% match band is a guaranteed doubling of contribution — no market, no waiting. Even 50% bands beat expected market returns years in advance. The order of operations most planners endorse: full match → high-interest debt → HSA (the only FICA-free shelter — see the Medicare tax calculator) → back to maxing retirement accounts. This calculator quantifies step one precisely.
Frequently Asked Questions
What is a typical 401(k) match?
The most common formula is 100% of the first 3% of salary plus 50% of the next 2% — an effective 4% of salary when you contribute 5%. "50% up to 6%" is the other frequent structure.
How much should I contribute to get the full match?
The full-match threshold of your plan's formula: 5% under the common formula, 6% under 50%-of-6%. Contributing below it declines free compensation.
Does the employer match count toward my contribution limit?
No — the employee deferral limit covers only your contributions. Match counts toward the larger combined annual limit.
What is 401(k) vesting?
The schedule (immediate, cliff, or graded over 2-6 years) determining how much employer match you keep if you leave. Your own contributions are always fully yours.
Is the 401(k) match free money?
Effectively yes — compensation paid only if you contribute. A 100% match band doubles your money instantly, before any investment growth.
What happens to the match if I leave before vesting?
Unvested match is forfeited back to the plan. Check your vesting date before resigning — weeks can be worth thousands.
Does 401(k) reduce my taxes?
Traditional contributions skip federal/state income tax now (Roth skips it later). Neither skips FICA — Social Security and Medicare apply to contributions.
Should I contribute more than the match?
After capturing the full match, prioritize by your situation: high-interest debt first, then HSA, then higher 401(k)/IRA contributions — the match itself is always step one.
What is a true-up provision?
A year-end correction that pays match you missed by front-loading contributions. Without one, maxing out early in per-paycheck match plans forfeits later match.
How do I compare match offers between jobs?
Convert to effective % of salary: 100%-of-4% = 4 points of pay; 50%-of-6% = 3 points. Add vesting risk, and treat the difference as salary in negotiations.
✓ Formula verified • Last updated: August 20, 2026