Financial term · Reviewed August 17, 2026
Vesting
Vesting: The process by which a right to an asset or contribution becomes non-forfeitable over time. Unvested employer contributions are lost if employment ends first. The Startup Dilution Calculator returns this figure from post-money ownership = investment ÷ post-money valuation; founder ownership is diluted by new ownership. At that calculator’s documented worked-example inputs the investor post-money ownership is 20.0%; holding every other input steady, moving pre-money valuation from $6,400,000 to $9,600,000 moves it from 17.2% to 23.8%, a spread of 6.6%.
Unvested employer contributions are forfeited when employment ends. So a vesting date can be worth more than a raise. Anyone weighing a job move should know exactly when the next tranche lands, because leaving a month early can cost more than the difference in salary. Schedules come in two shapes and the difference is stark. Graded vesting hands over a slice each year. Cliff vesting hands over nothing until a date and then everything at once, which makes leaving a month early genuinely expensive.
| Term | Vesting |
|---|---|
| Category | Startup & SaaS |
| How it is found | Post-money ownership = investment ÷ post-money valuation; founder ownership is diluted by new ownership |
| Worked example | Investor post-money ownership: 20.0% |
| Computed by | Startup Dilution Calculator |
| Related terms | 4 defined in this glossary |
Before you rely on it
What to check
Read the schedule for whether it is graded or cliff, and find the exact next vesting date.
The common error
Where people go wrong with vesting
Counting unvested employer money as part of a balance. It is on the statement and it is not yours.
Worked through
Vesting in plain numbers
An employee is granted 4,000 stock options with a four-year vesting schedule and a one-year cliff. Nothing vests during the first year. On the first anniversary, 25% vests, 1,000 options. After that, the rest vests monthly, so 83.3 options each month until the end of year four. Leave after 18 months and you keep 1,000 plus six months of monthly vesting, about 1,500. Leave at month eleven and you keep nothing. Employer retirement matches use the same idea: the money the employer puts in may become yours gradually over several years. Vesting gives the employer a reason to keep you and gives you a reason to stay.
Easily confused
Vesting and its neighbours
Vesting is not exercising, receiving or being taxed, although the terms are linked. Vesting is the point at which you earn the right to keep something. Exercising is buying shares with options. Receiving may happen at vesting or later. Tax timing depends on the type of award and the place. Accelerated vesting speeds up the schedule, for example after an acquisition. A cliff delays the first vesting. Graded vesting releases in steps. Immediate vesting gives the right at once, common for your own contributions to a retirement plan.
In real decisions
Where vesting turns up
Employees meet vesting in stock options, restricted stock units, employer retirement contributions and pensions. Startups use it for founders' shares to keep a team together; investors check vesting terms in a company's cap table. Someone considering a job change looks at what will vest before leaving and what will be lost; a calculator shows the vested amount on any date given the schedule.
Know the edges
Where vesting stops being reliable
Terms vary by plan and agreement. Leaving, being terminated or a change of control can change what happens. Tax treatment is complex. Unvested awards have no guaranteed value. This is general information and not legal or tax advice, and read your award agreement and plan documents, and consult a professional for big decisions.
Quick answers
What people ask about vesting
What is a cliff? A waiting period before any vesting occurs. If you leave before the cliff, you receive nothing. After it, a chunk vests at once, and the rest follows a schedule.
What happens to unvested awards if I leave? Usually they are forfeited. Some agreements allow limited exceptions, and vested options often have a short window to exercise.
Put it to work
How vesting is calculated
At the startup dilution calculator’s worked-example inputs, investor post-money ownership is 20.0%, holder ownership after financing is 80.0%. Moving pre-money valuation from $6,400,000 to $9,600,000 moves that first figure from 17.2% to 23.8%.
Open the Startup Dilution Calculator →
Definitions vary by company; keep cohort, period and revenue treatment consistent.
Related vocabulary
Terms used alongside this one
Keep reading
Nearby in the glossary
- ← Variable cost
- Volatility →
- All 174 defined termsThe complete Free Calculators Online financial glossary.