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Your employer match is free money you might be leaving behind

5 MIN READ — RETIREMENT — PERSONAL FINANCE — BEGINNER

The employer match in a 401k is the only truly "free" money the financial system offers ordinary people. You work there, you contribute a percentage of your salary to your retirement account, and your employer adds money on top. The return on that contribution is 50–100% before the investments grow at all. Not contributing enough to get the full match is one of the most expensive financial mistakes you can make.

How matching works

The most common formulas:

Dollar-for-dollar up to X% "We match 100% of your contributions up to 3% of salary."

Partial match up to X% "We match 50% of your contributions up to 6% of salary."

In the second scenario, contributing only 3% gets you half the match. Stopping at 5% leaves money on the table. The exact calculation matters — read your plan documents.

Vesting schedules: the catch

The employer match isn't always immediately yours. Vesting schedules determine when you gain full ownership.

Immediate vesting: The match is yours the moment it's deposited. Rare but ideal.

Cliff vesting: You own none of the employer contributions until a specific date, then you own all of them. Example: 0% until year 3, then 100%. If you leave before the cliff, you forfeit all employer contributions.

Graded vesting: You gain ownership incrementally. Example: 20% per year for 5 years. Leave after year 2 and you keep 40%.

Why this matters: An employer match is only free money if you stay long enough to keep it. Before accepting a job or leaving one, calculate what employer contributions you'd forfeit. It can be substantial.

Your own contributions are always immediately 100% vested — you can take those with you whenever you leave.

The tax math

401k contributions are pre-tax. This has two effects:

  1. Your taxable income is reduced by the amount you contribute
  2. The investments grow tax-deferred until withdrawal

If you're in the 22% marginal tax bracket and you contribute $5,000, your take-home pay only drops by $3,900 — the government absorbs $1,100 of the cost through reduced taxes. Your $5,000 retirement contribution effectively costs you $3,900.

When you withdraw in retirement, you pay income tax then — at whatever rate applies. If you're in a lower bracket in retirement than during your working years, you come out ahead.

Roth 401k (if offered): Contributions are after-tax. No immediate deduction, but qualified withdrawals in retirement are tax-free. Better if you expect to be in a higher bracket in retirement than now.

What to actually do

Minimum step: Contribute at least enough to get the full employer match. This is the floor. Below this, you're declining free money.

Next step: If you have remaining capacity after the match, consider:

  1. Pay off high-interest debt (over 7–8%) — the guaranteed "return" of eliminated interest beats most investments
  2. Fund an HSA if you have one (triple tax advantage)
  3. Max the 401k up to the annual limit ($23,000 in 2024, $30,500 if 50+)
  4. IRA contributions

The match specifically: You don't need to understand all of retirement planning to do this one thing. Find your HR portal, find the 401k section, set your contribution percentage to whatever gets you the full match.

Finding your match details

Ask for:

Quick reference