Vesting is the difference between “you earned it” and “you earned it — if you stay.” The details determine how much you forfeit when changing jobs and how to time a departure to minimize losses.
How Vesting Works
When an employer gives you something — a 401(k) match, RSUs, stock options — it doesn’t become fully yours until you’ve worked long enough to “vest.” Vesting creates a retention incentive: the longer you stay, the more you keep.
Three things that are always 100% vested immediately (your contributions, never the employer’s):
- Your own 401(k) payroll contributions
- Your after-tax contributions
- Your own investment gains on the above
Things subject to vesting schedules:
- Employer 401(k) matching contributions
- RSUs (Restricted Stock Units)
- Stock options (ISOs and NQSOs)
- Employer pension contributions
- Some profit-sharing contributions
401(k) Employer Match Vesting
ERISA Maximum Vesting Schedules
Federal law (ERISA) sets maximum lengths for vesting schedules. Employers cannot make you wait longer:
| Vesting Type | Maximum Schedule Allowed | Example |
|---|---|---|
| Cliff vesting | 3-year cliff | 0% years 1–2; 100% year 3 |
| Graded vesting | 6-year graded | 20% yr 2; 40% yr 3; 60% yr 4; 80% yr 5; 100% yr 6 |
| Immediate | 100% from day one | All contributions vested immediately |
Employers can be more generous (faster vesting) but not more restrictive than ERISA maximums.
Common Employer Match Vesting Schedules
| Schedule | Year 1 | Year 2 | Year 3 | Year 4 | Year 5 | Year 6 |
|---|---|---|---|---|---|---|
| Immediate | 100% | — | — | — | — | — |
| 3-year cliff | 0% | 0% | 100% | — | — | — |
| 4-year graded | 25% | 50% | 75% | 100% | — | — |
| 5-year graded | 20% | 40% | 60% | 80% | 100% | — |
| 6-year graded | 0% | 20% | 40% | 60% | 80% | 100% |
The Cost of Leaving Too Early: Worked Example
Your employer matches 100% of the first 4% of your $90,000 salary = $3,600/year match. Your plan has a 3-year cliff vesting schedule.
| When You Leave | Vested % | Vested Match | Forfeited Match |
|---|---|---|---|
| After 1 year | 0% | $0 | $3,600 + gains |
| After 2 years | 0% | $0 | $7,200 + gains |
| After 2 years, 364 days | 0% | $0 | $10,800 + gains |
| After 3 years | 100% | $10,800+ | $0 |
Leaving one day before the 3-year cliff costs $10,800+ in forfeited employer contributions — plus investment growth if markets have been good.
RSU Vesting Schedules
Restricted Stock Units (RSUs) are company stock grants that vest over time. The most common schedules:
Standard 4-Year Monthly Vesting (Silicon Valley Norm)
- 4-year vest with a 1-year cliff
- After 1 year: 25% of shares vest at once (the cliff)
- Months 13–48: remaining 75% vest monthly (1/48th per month)
On a 10,000 RSU grant:
| Timeline | Shares Vested | Cumulative Vested |
|---|---|---|
| Month 12 (cliff) | 2,500 | 2,500 (25%) |
| Month 18 | 750 | 3,250 (32.5%) |
| Month 24 | 750 | 4,000 (40%) |
| Month 36 | 1,500 | 6,250 (62.5%) |
| Month 48 | 3,750 | 10,000 (100%) |
Back-Loaded Vesting (Public Company Norm)
Some public companies use back-loaded schedules to retain employees longer:
| Year | Vesting % | Shares on 10,000 Grant |
|---|---|---|
| Year 1 | 10% | 1,000 |
| Year 2 | 20% | 2,000 |
| Year 3 | 30% | 3,000 |
| Year 4 | 40% | 4,000 |
Annual RSU Refresh Grants
Many tech companies grant new RSUs annually (“refresh grants”) on top of the original grant. After a few years, you have multiple overlapping vesting schedules:
| Year | Original 10K RSU (yr 1) | 5K Refresh (yr 2) | 5K Refresh (yr 3) | Total Vesting |
|---|---|---|---|---|
| Year 2 | 25% = 2,500 shares | — | — | 2,500 |
| Year 3 | 12.5%/yr = 1,250 | 25% = 1,250 | — | 2,500 |
| Year 4 | 1,250 | 1,250 | 1,250 | 3,750 |
| Year 5 | 1,250 | 1,250 | 1,250 | 3,750 |
The overlapping grants create a “golden handcuffs” effect: after 3–4 years, you have multiple cliffs and grants vesting simultaneously, making each year of leaving increasingly expensive.
What Accelerated Vesting Means
Change of control (acquisition) acceleration: If your company is acquired, equity may accelerate vesting. Two types:
- Single trigger: All unvested equity vests immediately upon acquisition
- Double trigger: Equity accelerates only if acquired AND you’re laid off within a set period (commonly 12–18 months)
Double trigger is more common. If your company is acquired and you’re retained, you don’t automatically get acceleration — only if you’re also involuntarily terminated.
How to Minimize Vesting Losses When Changing Jobs
Check Every Vesting Date Before Accepting an Offer
Before resigning, calculate exactly what you’ll forfeit:
- Pull your most recent 401(k) statement — look for “employer match vested balance” vs. “employer match unvested balance”
- Review your equity grant letters — list every RSU/option grant, shares unvested, and the next vesting date
- Calculate how much you’d gain by waiting 1–3 more months vs. leaving now
Negotiate Signing Bonus to Cover Forfeited Equity
When you’re leaving unvested equity behind, new employers sometimes offer signing bonuses to cover the loss. Come to the negotiation with a specific number:
- “I have $45,000 in unvested RSUs vesting over the next 8 months. I’d need a signing bonus or accelerated start date to make the transition work.”
Sophisticated employers understand this and can structure offers accordingly (front-loaded equity, cash signing bonus, or delayed start date to clear your cliff).
Vesting is just one factor when evaluating a job change. See the 401(k) Complete Guide for a full picture of how employer contributions, contribution limits, and rollover rules interact. If you leave and have an old 401(k) to deal with, see how to find a lost 401(k).
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