Cliff vs Graded Vesting: 401(k) Match and RSU Schedules for Two-Income Families

By Kevin Luu, Co-Founder and Chief Learning Officer. Reviewed on 2026-09-30.

Cliff vesting gives you nothing until a set date, then 100% at once. Graded vesting gives you ownership in steps, a percentage each year, until you own it all. For employer matching contributions in a 401(k), federal law sets the slowest schedules a plan may use: a 3-year cliff, or a 6-year graded schedule that starts at 20% after year two and adds 20% a year until 100% after year six.

For a household with two W-2 earners at a biotech, a hospital system or a large tech employer, vesting shows up in two places: the 401(k) match and RSU grants. The rules for each are different, and the dollars at stake on a job change are usually far larger on the RSU side. This guide covers both, with a worked example for a $970,000 California family.

Cliff vs graded vesting for a 401(k) match: the legal limits

Your own 401(k) deferrals, pre-tax or Roth, are always 100% yours from the first paycheck. Vesting only applies to money your employer puts in: the match and any profit-sharing contribution. The IRS sets two minimum schedules for those employer dollars (IRS, Retirement Topics: Vesting):

These are floors on generosity, not required designs. A plan can always vest faster. That is why you will see other schedules in plan documents:

• “6-year graded vesting schedule” usually means the statutory 2-to-6 table above.
• “5-year graded vesting schedule” usually means 20% after each year of service, reaching 100% after year five. It is faster than the legal minimum.
• “3-year graded vesting” often means roughly one third per year (33%, 67%, 100%).
• “2-year vesting period” is common in automatic-enrollment safe harbor plans (QACA), where the safe harbor match must be 100% vested after no more than 2 years of service (IRS issue snapshot on matching contribution vesting).
• Immediate vesting applies to a traditional safe harbor 401(k) match and to SIMPLE and SEP plans, where contributions are fully vested when made.

Three other rules matter more than people expect. A “year of service” is usually a 12-month period with at least 1,000 hours worked, as defined in your plan document. You become 100% vested at the plan’s normal retirement age or if the plan terminates. And if your employer lays off enough people that turnover reaches 20% or more in the period, the IRS presumes a partial termination, and the affected departing employees must be fully vested (IRS, Partial Termination of Plan). After a large tech or biotech layoff, it is worth asking HR whether that happened.

How RSU vesting differs from 401(k) vesting

RSU vesting is set by your grant agreement, not by the retirement plan rules above. There is no legal maximum schedule. A common design is four years with a one-year cliff (25% after year one), then monthly or quarterly vesting. Some employers back-weight grants so most shares vest in years three and four. Many grants combine the two ideas: a cliff first, then graded vesting.

The tax treatment is also different. Unvested match money is not taxed until you withdraw it from the 401(k). RSUs are taxed as wages on the day the shares vest and are delivered, at their market value that day. An 83(b) election does not apply to RSUs (Treas. Reg. §1.83-3(e)). For 2026, employers can withhold federal tax on RSU income at a flat 22%, and must withhold 37% on supplemental wages over $1,000,000 in the year (IRS Publication 15 (2026)). Withholding is not the tax you owe.

Worked example: a $970,000 California household deciding when to leave

Assumptions (illustrative): Maya is a senior scientist at a Bay Area biotech with a $420,000 salary. Her husband Daniel is an engineering director at a tech company with $550,000 in W-2 pay including RSU income. They file jointly, each defers the 2026 maximum of $24,500 to their 401(k), they have two children aged 4 and 7, and Maya has an outside offer.

Maya’s 401(k) match on a 2-to-6 graded schedule

Her plan matches 50% of deferrals up to 6% of pay. For 2026, pay above $360,000 does not count for plan contributions (the 401(a)(17) limit), so her maximum match is 50% x 6% x $360,000 = $10,800 a year. She has completed four years of service.

On a 3-year cliff schedule she would already own all $43,200. On this graded plan, leaving now forfeits $17,280 plus its investment growth. That is real money, but it is a negotiating item, not usually a reason to turn down a better role.

Daniel’s RSUs on a cliff-then-graded grant

Daniel’s newest grant is worth $400,000 over four years: 25% after a one-year cliff, then quarterly. If he left at month 11, he would forfeit the whole $400,000. At month 13, he would have $100,000 vested.

That $100,000 is taxed as wages. With joint taxable income above $768,700, the family is in the 37% federal bracket for 2026. Their California taxable income of about $910,000 (assuming the California standard deduction) reaches the 11.3% bracket (2025 schedule, $891,542 to $1,485,906; 2026 California brackets are not yet published), though most of the $100,000 vest falls in the 10.3% bracket below it. Add 1.45% Medicare, the 0.9% Additional Medicare Tax and 1.3% California SDI for 2026. The combined marginal rate on their top dollars is about 52%, and the total tax on the $100,000 vest is roughly $51,000.

Federal withholding at 22% covers $22,000 of the $37,000 federal tax, leaving about $15,000 due in April from that one vest, unless they adjust withholding or make estimated payments.

The same family in Washington

In Seattle, California’s income tax and SDI drop out for 2026. Washington’s WA Cares Fund premium of 0.58% of wages, with no wage cap, applies unless you hold an approved exemption (WA Cares Fund), so the marginal rate on the vest is about 40% (37% + 1.45% + 0.9% + 0.58%). Two cautions: Washington has enacted a 9.9% income tax for individuals and joint filers with adjusted gross income over $1,000,000, starting January 1, 2028 (WA DOR), and Washington’s capital gains tax applies at 7%, and 9.9% above $1,000,000 of taxable gains, if you hold vested shares for more than a year and sell them at a long-term gain above the annual standard deduction.

The decision: what to check before you resign or accept an offer

1. Find your exact vesting dates. For the 401(k), read the summary plan description: the schedule, how a year of service is measured and when the plan year ends. For RSUs, pull the vest calendar from your equity portal.
2. Check for a last-day rule on the match. Some plans make an annual “true-up” match only to employees still employed on the last day of the plan year. Leaving in December can cost a full year of match.
3. Price the forfeiture. Add unvested match, unvested RSUs (at today’s price), and any ESPP purchase you would miss.
4. Ask the new employer to make you whole. Sign-on bonuses and replacement RSU grants exist for exactly this. Bring the number from step 3.
5. Plan the tax on the last vest. A large final vest can push supplemental wages from your current employer past $1,000,000 for the year, where 37% withholding applies. A sign-on bonus from the new employer is withheld separately, often at 22%, so the two together can leave a large balance due in April.
6. Move vested 401(k) money deliberately. Rolling to the new plan or an IRA has knock-on effects for backdoor Roth contributions and for the rule of 55. If the new plan allows after-tax contributions, compare a mega backdoor Roth against a taxable brokerage account.

Common mistakes with vesting schedules

• Counting unvested match as net worth. Most 401(k) statements show the full balance. Check the vested balance line.
• Assuming “graded” means 20% after year one. Under the statutory 2-to-6 schedule, you own nothing until two years of service.
• Treating withholding as the tax bill. At a 37% bracket, 22% withholding on RSUs leaves a gap every year, not only on a job change.
• Letting vested RSUs pile up in employer stock. Vesting turns a grant into a concentrated position in the same company that pays your salary.
• Forgetting the match uses contribution room. For 2026 the total of employee and employer additions is capped at $72,000. A match that later forfeits still used that room in the year it went in, which can matter if you also fund a mega backdoor Roth.

What to write down for your kids

Vesting is one of the clearest money lessons a child can see in their own family: some rewards arrive only if you stay, and leaving early has a price. A one-page note on why you stayed for a vest date, or why you walked away from one for a better role, teaches more than any calculator. Record the numbers you weighed and what mattered more than money. Pass down your knowledge, not your money. If you want help turning those decisions into a written family record, see our family governance work.

Frequently asked questions

Is graded vesting better than cliff vesting?

It depends on when you leave. Graded vesting is better if you leave after year two but before year three, since you keep 20% versus 0% under a 3-year cliff. Cliff vesting is better if you stay at least three years, because you own everything at year three, while graded leaves you at 40%. After six years, both reach 100%.

Do I lose my own 401(k) contributions if I leave before vesting?

No. Your elective deferrals, pre-tax or Roth, and their earnings are always 100% yours. Vesting schedules apply only to employer contributions such as the match or profit-sharing. Unvested employer money is forfeited back to the plan when you leave, and the plan uses it under its own rules, such as reducing future employer contributions or paying plan expenses.

What does a Fidelity or other provider vesting schedule show?

The recordkeeper only displays the schedule your employer chose in the plan document. Look for the vested balance and vesting percentage on your account page, and confirm the details in the summary plan description. If the numbers look wrong, for example after a layoff, ask HR in writing.

Next step

Before your next job conversation, list every unvested dollar you hold, with its vest date, and bring that number to the negotiation. If you want a second set of eyes on your benefits and equity, our retirement and employee benefits and tax management services start with a Tax & Wealth Assessment.

This is general education, and the right move depends on the family’s full picture.

Written by

Kevin Luu

Co-Founder and Chief Learning Officer, Bright Advisers

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 Kevin