Stock Vesting, Explained
Learn how vesting works for startup equity, what cliffs and schedules mean, and how vesting affects what you actually keep if you leave.
Vesting is the mechanism that determines when you actually earn your equity.
Without vesting, a company could hand out a large grant on day one and an employee could leave immediately with the entire award. Vesting solves that by tying ownership to time, service, or sometimes performance.
If you have equity from a startup or private company, understanding vesting is one of the first things you should do.
What vesting means
Vesting is the schedule by which you gain rights to your equity over time.
For employees, vesting usually affects:
- stock options
- RSUs
- restricted stock
- founder or early-employee stock subject to repurchase rights
Until equity vests, you may not fully own it or may not be able to keep it if you leave.
The most common schedule: four years with a one-year cliff
A standard startup vesting schedule looks like this:
- Four-year vesting term
- One-year cliff
- Monthly or quarterly vesting after the cliff
That usually means nothing is earned during the first year, then a large portion vests at once, followed by smaller installments over the remaining term.
Why vesting matters so much
It affects what you keep if you leave
If you leave before your cliff, you may walk away with no equity at all. If you leave later, you usually keep only the vested portion.
It affects exercise timing
Options often must be exercised within a limited window after departure. That can turn a career decision into a tax and cash-flow decision very quickly.
It shapes liquidity planning
You cannot sell what you have not yet earned. Even during a tender offer or secondary opportunity, only vested and eligible awards may count.
Key terms to understand
Cliff
A waiting period before any vesting happens. The one-year cliff is the best-known example.
Acceleration
A provision that speeds up vesting. This can happen in connection with an acquisition, termination, or other defined event.
Single-trigger acceleration
Vesting accelerates after one event, such as a change in control.
Double-trigger acceleration
Vesting accelerates only after two events, usually a change in control plus a qualifying termination.
Post-termination exercise window
For options, this is the period you have to exercise after leaving the company.
Common employee mistakes
Looking only at grant size
A large grant with a long schedule and a short exercise window may be less useful than a smaller, cleaner grant.
Ignoring the departure scenario
You should understand what happens if you leave voluntarily, are laid off, or the company is acquired.
Forgetting that vesting and settlement are not always the same
RSUs may vest over time but settle only later. That distinction matters a lot at private companies.
Questions to ask your company or recruiter
- What is the vesting schedule?
- Is there a cliff?
- Does vesting happen monthly, quarterly, or annually?
- Is any acceleration included?
- What happens to my vested and unvested equity if I leave?
- For options, how long do I have to exercise after termination?
Final takeaway
Vesting is the bridge between “promised equity” and “earned equity.”
It determines what you actually keep, what decisions you may face when leaving, and how much flexibility you have when liquidity opportunities appear. Before you focus on valuation, start with the mechanics.
Related guides
Sources and further reading
- IRS Publication 525: https://www.irs.gov/publications/p525