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The 401(k) Match: An Instant 100% Return You're Probably Leaving Behind

One in five workers leaves employer match money unclaimed. It's a raise you have to pick up off the table — here's exactly how the match works, and the vesting fine print.

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Devon Okafor · Investing Columnist

7 min read

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A jar of coins on a wooden table seen from above.
A jar of coins on a wooden table seen from above. — Photo: Miguel Á. Padriñán / Pexels

One in five workers leaves employer match money unclaimed.

There is exactly one guaranteed, instant, risk-free 50–100% return in finance, and roughly one in five workers doesn't bother to collect it. It's the employer 401(k) match — a chunk of your compensation that requires a form, not luck.

The match, with real numbers

The most common formula matches 50% of your contributions up to 6% of salary; generous plans match dollar-for-dollar. On an $80,000 salary with the half-match:

  • You contribute 6%: $4,800 a year ($400/month, pre-tax — so your paycheck drops by less than $400).
  • Employer adds 3%: $2,400 a year. Free. Immediately.
  • Combined: $7,200 a year compounding. Over 30 years at 8%, that's roughly $870,000 — of which a quarter-million-plus traces back to the match alone.

No stock pick, no side hustle, no savings account on earth pays an instant 50%+ the day you commit. Run the long arc in our compound interest calculator.

Run your own numbers

Compound interestproject any balance — freeDebt payofffind your debt-free date — freeSavings goalplan the monthly deposit — free

The fine print: vesting

Your deferrals are always yours. The match typically vests — becomes irrevocably yours — on a schedule: cliff (all at once, commonly after 3 years) or graded (20% per year starting year 2). If a job change is coming, check the schedule: sometimes staying six extra weeks makes five figures vest. It happens constantly and quietly.

What to buy inside it

Most plans offer a short menu; you'd typically choose a target-date fund matching your retirement year (one fund, self-adjusting — a perfectly good default) or, if available, a low-cost total-market or S&P 500 index fund (the case for indexes applies here too). Avoid the default money-market option some plans land you in — it pays near-inflation and defeats the point.

The order of operations

Match first, then water the rest of the garden: contribute enough to capture the entire match, keep a starter emergency fund, pay toxic debt, then push more into an IRA or back into the 401(k) up to the limit. And when HR offers auto-escalation (raising your contribution 1% a year), say yes — future you gets the raise before lifestyle can absorb it.

Frequently asked questions

What is a 401(k) match and how does it work?

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Your employer adds money to your 401(k) based on your own contributions — a common formula is 50 cents per dollar up to 6% of salary. Contribute 6% on a $70,000 salary ($4,200) and your employer adds $2,100, instantly. It's part of your compensation, not a bonus — you just have to claim it by contributing.

Should I max my 401(k) before anything else?

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Only the match comes first. The standard order: contribute to the full match, build a small emergency fund, kill high-interest debt, then fund an IRA (often cheaper and wider in fund choices), then return to max the 401(k) — the 2026 employee limit is in the mid-$20,000s and adjusts with inflation.

What happens to my 401(k) match if I change jobs?

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Your own contributions are always 100% yours. Employer match money follows a vesting schedule — cliff vesting (0% until year 3, then 100%) or graded (20% per year from year 2). Leave before vesting and unvested match returns to the plan. Check your summary plan description before timing a departure.

Written by

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Devon Okafor

Investing Columnist

Devon covers index investing, retirement accounts, and market history. His rule for every story: if a first-time investor can't act on it, it isn't finished yet.

Educational content, not individualized financial advice. Figures are illustrative; rates and limits change — verify before acting. Mintmark may earn from advertising and partner links; our conclusions stay our own. How we make money.

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