By Kevin Luu, Co-Founder and Chief Learning Officer. Reviewed on 2026-09-30.
A 401(k) match is employer money that depends on what you defer: the company adds a set amount for each dollar you contribute, up to a cap. A profit-sharing contribution is employer money the company decides on each year and allocates by a formula, usually as a percentage of pay, whether or not you defer anything. Both land in the same 401(k) account, both count toward the same $72,000 total limit for 2026, and for a high-income W-2 earner the real question is not which one is “better” but how much of each you will actually receive after the pay cap, vesting and timing rules.
Most employees do not choose between them. You get whatever formula your employer offers. Where the choice becomes real is when you compare two job offers, decide how fast to front-load your deferrals, or plan how much after-tax room is left for a mega backdoor Roth. This guide covers all three.
How a 401(k) match works
A match is written as a formula, for example “50% of the first 6% of pay you defer” or “100% of the first 4%”. If you defer at least the threshold percentage, you get the full match. If you defer less, you get less. Your own deferrals are capped at $24,500 for 2026 (plus $8,000 catch-up at 50 or older, or $11,250 at ages 60 to 63), per IRS Notice 2025-67.
A discretionary match is a match the employer can change or skip from year to year. The plan sets the formula each year rather than promising it in advance. That is the main thing behind the search “401k discretionary match rules”: the money is real once deposited, but it is not promised for future years.
A safe harbor match is the opposite. In exchange for skipping some annual nondiscrimination tests, the employer commits to the contribution, and in a traditional safe harbor plan those required contributions must be fully vested when made, according to the IRS 401(k) plan overview.
How a profit-sharing contribution works
Despite the name, a profit-sharing contribution does not require the company to have profits. The IRS profit-sharing plan page describes it as a plan that “accepts discretionary employer contributions,” with no set amount the law requires. The employer decides each year whether to contribute and how much, then divides it among eligible employees by a formula written in the plan document. A common one is “comp-to-comp”: your share is your pay divided by total eligible pay.
In practice, “401(k) profit sharing plan” usually means one plan with both features: your elective deferrals plus an employer profit-sharing contribution. You do not need to defer to receive the profit-sharing piece, though many plans require you to be employed on the last day of the plan year, and the deposit often arrives after year end.
Match vs profit sharing side by side
| 401(k) match | Profit-sharing contribution | |
|---|---|---|
| Depends on your deferral? | Yes | No |
| Amount set by | Fixed formula (safe harbor) or yearly decision (discretionary) | Employer decision each year, allocated by plan formula |
| Timing | Often each paycheck | Often once a year, after year end |
| Vesting | Immediate in a traditional safe harbor plan; otherwise per plan schedule | Per plan schedule |
| Pay counted for 2026 | Up to $360,000 | Up to $360,000 |
| Counts toward $24,500 deferral limit? | No | No |
| Counts toward $72,000 total limit? | Yes | Yes |
Three rules that matter more at a $750,000+ household income
1. The $360,000 pay cap shrinks the percentage you really get
Plans can only count compensation up to $360,000 for 2026 (the 401(a)(17) limit in Notice 2025-67). A biotech director earning $500,000 with a “4% match” does not get $20,000. The match is 4% of $360,000, or $14,400, which is under 3% of actual pay. The same cap applies to profit-sharing allocations.
2. Front-loading can cost you match money
Many high earners set a high deferral rate to hit $24,500 early. If your plan calculates the match each paycheck and has no year-end “true-up”, you stop receiving the match the day your deferrals stop. Profit-sharing contributions do not have this problem because they are not tied to deferrals.
3. You are a highly compensated employee
You are generally a highly compensated employee (HCE) if the employer paid you more than the IRS threshold in the prior year ($160,000 in the 2026 limits), unless the plan limits HCE status to the top-paid 20% of employees. In a traditional, non-safe-harbor plan, the company must test that deferrals and matches do not favor HCEs, and after-tax contributions are tested along with matches. If the plan fails, HCEs can have part of their own contributions returned as taxable pay, per the IRS guide to the ADP and ACP tests. Ask HR whether the plan is safe harbor; if it is, the deferral and match tests largely go away, but after-tax contributions for a mega backdoor Roth can still be limited by testing.
Worked example: two offers for a Bay Area family
Assumptions (illustrative): Priya and Daniel live in San Mateo with two kids, ages 4 and 7. Daniel earns $380,000 base salary. Priya is weighing two offers with the same salary, $400,000, paid semi-monthly (24 paychecks), and plans counting base pay only. Both plans allow after-tax contributions with in-plan Roth conversion.
- Offer A: fixed match of 50% of the first 6% of pay (a common formula, but not a safe harbor one), calculated per paycheck, no true-up, immediately vested.
- Offer B: no match; discretionary profit-sharing contribution that has been 5% of pay in each of the last five years, 3-year cliff vesting.
Offer A, full value: 3% of $360,000 = $10,800 a year.
Offer A, if Priya front-loads: to keep it simple, assume the plan counts $15,000 of pay per paycheck ($360,000 / 24). At a 20% deferral rate she puts in $3,000 a paycheck and reaches $24,500 partway through the ninth paycheck. She receives the full $450 match on eight paychecks ($3,600) plus $250 on the ninth (50% of her final $500 deferral), or $3,850. That is $6,950 less than the full match. Deferring about 6.8% each paycheck instead ($24,500 / $360,000) keeps her above the 6% threshold all year and captures the full $10,800.
Offer B, if the pattern holds: 5% of $360,000 = $18,000 a year, regardless of how she defers. But it is not promised, and if she leaves before three years of service she forfeits all of it.
Mega backdoor Roth room for 2026 (after-tax room = $72,000 minus deferrals minus employer money, assuming nondiscrimination testing does not cut back her after-tax contributions):
| Offer A | Offer B | |
|---|---|---|
| Priya’s deferrals | $24,500 | $24,500 |
| Employer contribution | $10,800 | $18,000 |
| After-tax room left | $36,700 | $29,500 |
| Total in the account if fully used | $72,000 | $72,000 |
The total is capped at $72,000 either way. The difference is who pays for it. Offer B’s extra $7,200 of employer money replaces $7,200 that Priya would otherwise fund from take-home pay. That is a real advantage, but only if the contribution keeps coming and she stays past the cliff. If the family expects her to stay at least three years and the employer’s record is steady, Offer B is likely worth more. If she might leave within two years, Offer A’s vested $10,800 a year is the safer number.
California and Washington: what changes
Employer match and profit-sharing dollars are typically pre-tax: they are not included in your W-2 wages when deposited, and they are taxed as ordinary income when withdrawn. In California that means withdrawals in retirement are taxed at state rates up to 13.3% (2025 schedule, FTB) if you still live there. Washington has no wage income tax today, and retirement accounts are exempt from its capital gains tax, but a new 9.9% income tax on AGI over $1,000,000 starts January 1, 2028, per the Washington Department of Revenue. Rules for how it treats retirement income are still pending. For most families, where you expect to live when you withdraw matters more than which formula funded the account.
Common mistakes
- Comparing offers on the headline percentage without applying the $360,000 cap.
- Front-loading deferrals in a plan with a per-paycheck match and no true-up.
- Counting an unvested profit-sharing balance as yours when deciding whether to leave.
- Assuming last year’s profit-sharing percentage will repeat this year.
- Forgetting that a larger employer contribution leaves less after-tax room for the mega backdoor Roth. See mega backdoor Roth vs brokerage for how to use what is left.
The decision, as a short checklist
- Find the match formula, whether it is safe harbor, and whether there is a year-end true-up (Summary Plan Description).
- Ask for the profit-sharing history for the last three to five years and the eligibility rules (last-day employment, hours).
- Check the vesting schedule and your service date.
- Apply the $360,000 cap and calculate employer dollars, not percentages.
- Set your deferral rate so you capture the full match, then decide how much after-tax room to fill.
What to write down for your kids
A job decision that weighs a steady match against a larger but uncertain profit-sharing contribution is exactly the kind of reasoning children never see. They see that a parent changed jobs, not the trade-off between certainty and upside behind it. A one-page note of what you compared and why you chose it is something they can read at 16. As Kevin Luu puts it: “Your kids don’t need to inherit your portfolio. They need to inherit your decision-making process.”
FAQ
Does a profit-sharing contribution count toward my $24,500 limit?
No. The $24,500 limit for 2026 applies only to your own elective deferrals. Employer match and profit-sharing contributions count toward the separate $72,000 total annual additions limit, along with your deferrals and any after-tax contributions. Age 50+ catch-up contributions sit on top of the $72,000.
Can my employer take back a profit-sharing contribution?
Once deposited, the vested portion is yours. The unvested portion is forfeited if you leave before meeting the plan’s vesting schedule, such as a 3-year cliff or a graded schedule that reaches 100% after six years. Your own deferrals are always 100% vested, per the IRS vesting rules.
Is a discretionary match the same as profit sharing?
No. A discretionary match still depends on what you defer; the employer just decides the formula each year. A profit-sharing contribution is allocated by pay or another plan formula regardless of whether you defer. Some plans offer both, which is why the two are often confused.
Next step
Pull your Summary Plan Description and confirm three things: match formula and true-up, vesting schedule, and whether after-tax contributions are allowed. If you are comparing offers or want the full employer-plan picture mapped against RSUs and taxes, our retirement and employee benefits and tax management teams at the Age Five Family Office™ can run the numbers in a Tax & Wealth Assessment. For writing the decision down for your family, see family governance.
This is general education, and the right move depends on the family’s full picture.
Kevin has advised high-income W-2 tech and biotech families since 2015, and leads the education-first Age Five Family Office from Brea, California.
Connect on LinkedIn → · About KevinThis is part of how we approach Retirement & Employee Benefits for high-income W-2 families at Bright Advisers.
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