How a 401(k) Match Works (Don't Leave Free Money)

An employer 401(k) match is the closest thing to free money in personal finance: your company adds to your retirement account based on what you contribute. Not capturing the full match is leaving part of your compensation on the table — here's how it works and why it comes first.

How a match works

A match is expressed as a formula, like '50% of contributions up to 6% of salary' or '100% up to 3%.' If you earn $60,000 and your employer matches 100% up to 3%, contributing $1,800 (3%) earns you another $1,800 from them — an instant 100% return before the market does anything.

Why the match comes first

The standard priority order is: contribute enough to get the full employer match first, then pay down high-interest debt and max other tax-advantaged accounts, then come back to the 401(k). Nothing else reliably returns 50–100% instantly. Even while paying off debt, capturing the full match usually wins.

Watch the vesting schedule

Your own contributions are always yours, but matched money may 'vest' over time — you might need to stay a few years to keep all of it. Vesting can be immediate, cliff (all at once after N years), or graded (a rising percentage each year). Check your plan so you know what you'd keep if you left.

Don't leave money on the table

• Contribute at least enough to earn the full match — anything less is a guaranteed loss.
• Watch out for 'true-up': if you max out early in the year, some plans stop matching once you hit the annual limit. Spreading contributions evenly protects the full match.
• A match doesn't count against your personal contribution limit — it's on top of it.

Roth or traditional 401(k)?

Many plans offer both. A traditional 401(k) lowers your taxable income now and is taxed in retirement; a Roth 401(k) is funded after-tax and comes out tax-free. The match itself typically goes into the traditional (pre-tax) side regardless. The 'higher tax rate now or later?' question decides which is better for your contributions.

See what the match builds

Use the 401(k) and retirement calculators below to project how your contributions plus the employer match grow over decades. Try toggling the match on and off — the gap it creates over a career is often larger than any single raise you'll get.