How Phantom Equity Vesting Works
Vesting is how an employee earns their phantom equity over time. Without vesting, an employee who leaves after six months would walk away with the same payout as someone who stayed five years. Vesting prevents that — and it's the main mechanism that makes phantom equity a retention tool rather than just a bonus.
This guide explains the most common vesting structures, how to choose between them, and what to think about when designing your plan.
What Vesting Means
When you grant phantom equity, the employee doesn't immediately own all of it. Instead, units unlock (or "vest") according to a schedule you define. Only vested units pay out.
If an employee leaves before fully vesting, they forfeit the unvested portion. This is the key mechanic that drives retention.
Types of Vesting Schedules
1. Time-Based Vesting (Most Common)
Units vest automatically as time passes, regardless of performance. This is simple, predictable, and the easiest for employees to understand.
Example — 4-year straight-line vesting:
- Employee is granted 10,000 phantom units
- 2,500 units vest each year
- After year 1: 2,500 vested
- After year 2: 5,000 vested
- After year 4: fully vested
This is the most common structure and closely mirrors what tech startups use for stock options.
2. Cliff Vesting
A cliff adds a minimum tenure requirement before any vesting begins. Nothing vests until the employee hits the cliff, then a chunk vests all at once.
Example — 1-year cliff, then monthly vesting:
- 0 units vest in the first 12 months
- At month 12: 25% of units vest immediately (the cliff)
- Months 13–48: remaining 75% vest ratably
The cliff protects you from employees who leave early — if they don't reach the cliff, they walk away with nothing. It's standard for employees you're making a significant investment in.
3. Graded (Graduated) Vesting
Instead of equal amounts each year, vesting accelerates over time. Employees earn more in later years than earlier ones, which increases the cost of leaving as time goes on.
Example — back-weighted 4-year schedule:
- Year 1: 10% vests (1,000 units)
- Year 2: 20% vests (2,000 units)
- Year 3: 30% vests (3,000 units)
- Year 4: 40% vests (4,000 units)
This structure creates the strongest retention pull at years 3 and 4 — often the critical period for senior employees.
4. Milestone-Based Vesting
Units vest when specific business goals are met — not just time passing. This ties phantom equity directly to performance outcomes.
Example milestones:
- 25% vests when the company hits $1M ARR
- 25% vests on completion of a specific product or project
- 50% vests at exit or liquidity event
Milestone vesting is powerful but requires clear, measurable targets. Ambiguous milestones cause disputes. Use this structure for senior hires or co-founder equivalents where outcomes matter more than tenure.
5. Hybrid Vesting
Many plans combine time-based and milestone triggers — for example, units vest on a time schedule but only if the employee is still employed AND the business has hit a revenue target.
You can also structure it so that:
- Time vesting applies to most units (say, 75%)
- Milestone vesting applies to the rest (25%)
This gives employees a predictable baseline while tying some upside to business outcomes.
Acceleration Clauses
Acceleration clauses specify when unvested units vest early — typically at exit.
Single-Trigger Acceleration
All unvested units vest immediately upon a sale of the company, regardless of what happens to the employee.
Pros: Great for employees — they're fully rewarded if the company sells. Cons: The acquirer inherits all the payout liability upfront.
Double-Trigger Acceleration
Unvested units only accelerate if two things happen: (1) the company is sold AND (2) the employee is terminated without cause within a set window after the sale.
Pros: Balances employee protection with acquirer concerns. Cons: More complex to administer.
Most small businesses use double-trigger acceleration if they include it at all.
Designing Your Vesting Schedule
A few questions to guide your decision:
How long do you need this person to stay? If 2 years is your minimum, use a 2-year cliff. If you're thinking long-term, a 4-year schedule is standard.
How important is performance vs. tenure? Time-based vesting rewards staying. Milestone vesting rewards delivering. Combine them if both matter.
What happens if you sell? Decide whether phantom units accelerate at exit before you grant anything. It's much harder to change this retroactively.
What happens if the employee is terminated vs. resigns? Some plans vest partially or fully upon involuntary termination. Others don't. Define this clearly.
What Happens to Unvested Units When Someone Leaves
This is the most important thing to get right in your plan document. Common treatments:
| Departure Reason | Typical Treatment | |---|---| | Voluntary resignation | Forfeit all unvested units | | Termination without cause | Forfeit unvested; may receive pro-rata vesting | | Termination with cause | Forfeit everything, including vested units (in some plans) | | Death or disability | Often accelerate some or all vesting | | Retirement | Often pro-rata vesting based on tenure |
Whatever you choose, put it in writing before you grant anything.
Vesting in Practice with Equigrant
Equigrant tracks vesting automatically based on the schedule you set. You can see each employee's vested and unvested units in real time, model payout scenarios at different company valuations, and generate a simple statement employees can reference.
When an employee leaves, you update their status and the system shows you the final vested amount — no manual spreadsheet required.