A schedule that earns equity over time instead of all at once. Standard is four years with a one-year cliff. Vesting protects the company and remaining founders if someone leaves early. They only keep what they've earned.
vesting
/ˈvestɪŋ/ noun — The process by which an equity interest is earned over time according to a predetermined schedule, contingent on continued service or the achievement of specific milestones. Unvested equity can typically be forfeited or repurchased if the holder leaves the company before their schedule is complete. From the legal concept of rights "vesting" (becoming fully enforceable) in a grantee over time.
Why it matters
Vesting protects everyone. Without it, someone who leaves after a month keeps their full equity stake. With it, equity is earned over time, and departures are clean. The equity that would have vested returns to the company instead of becoming a permanent fixture on the cap table.
Investors expect to see vesting on every cap table, and its absence is a red flag. A cap table full of equity held by people who are no longer involved with the company signals that the founding team didn't understand the basics of equity governance — or didn't care enough to protect themselves. Either way, it makes the investment less attractive.
Beyond investor optics, vesting is simply fair. Equity is supposed to represent the value someone creates over the life of the company. A vesting schedule turns that principle into a mechanism — you earn the equity by staying and building, not just by being there at the start.
How it works
The standard vesting schedule is four years with a one-year cliff. During the first year, nothing vests. On the one-year anniversary, 25% vests at once. After that, the remaining 75% vests monthly (or quarterly) over the next three years — approximately 2.08% of the total grant per month.
If someone leaves at month 18, they keep about 37.5% of their grant and forfeit the rest. The unvested shares return to the company and can be reissued. At month 48, the grant is fully vested and the person owns all of their allocated shares outright.
Vesting should apply to everyone, including founders. Some teams use shorter schedules (1-2 years) for advisors or contractors, but the four-year standard is what investors expect to see for founders and key employees. Deviating from this without explanation will require justification in your fundraising conversations.
Vesting schedules may also include acceleration provisions — events that cause unvested equity to vest early. Single-trigger acceleration vests equity upon an acquisition. Double-trigger requires both an acquisition and a qualifying departure (fired without cause or resign for good reason). Investors generally prefer double-trigger acceleration because it keeps founders motivated to stay and contribute post-acquisition.
Common vesting structures
| Structure | Typical for | Notes |
|---|---|---|
| 4 years, 1-year cliff | Founders, employees | Industry standard; required by most VCs |
| 2 years, 6-month cliff | Advisors, part-time contributors | Shorter engagement; reflects advisory relationship |
| 1 year, no cliff | Short-term advisors | Monthly vesting only; for limited engagements |
| 4 years, back-dated start | Founders who worked pre-incorporation | Credits pre-formation work; reduces effective cliff |
| Milestone-based | Performance grants, executive hires | Uncommon for standard grants; used for specific performance targets |
History and origin
Equity vesting for employees dates to the 1950s and 1960s, when pension plans began using vesting schedules to encourage long-term employment. The concept moved to stock option plans in the 1970s as Silicon Valley companies started compensating employees with equity. Early tech companies like Hewlett-Packard and Intel used vesting to retain engineers who were otherwise tempted by competitors.
The specific "4-year vesting with 1-year cliff" structure became a venture capital standard through the term sheet practices of major VC firms in the 1980s and 1990s. Sequoia Capital, Kleiner Perkins, and other early-generation VCs began requiring founder vesting as a condition of investment after experiencing cases where co-founders departed early and retained large equity stakes that complicated future fundraising and created misaligned incentives.
The structure is now so standardized that Y Combinator includes founder vesting requirements in their post-investment standard documents, and the NVCA model employee option plan incorporates a 4-year/1-year cliff structure as the default. Deviating from this structure requires explicit justification, and investors who encounter non-standard vesting schedules almost always ask why during due diligence.
Frequently asked questions
What is vesting and why do startups use it?
Vesting is a schedule by which equity is earned over time rather than granted all at once. Startups use vesting to ensure that equity reflects actual work and commitment. Without vesting, a founder who leaves after three months keeps their full equity stake, creating dead equity that penalizes everyone who stays.
What is the standard vesting schedule for startup founders?
The industry standard is four-year vesting with a one-year cliff. Nothing vests during the first year. On the one-year anniversary, 25% vests at once. After the cliff, the remaining 75% vests monthly over the next three years. Nearly all institutional investors require this structure as a condition of investment.
What is the difference between vesting and a cliff?
Vesting is the overall schedule by which equity is earned over time. The cliff is a specific rule within the vesting schedule — it's the initial waiting period before any vesting begins. In a "4-year vesting with 1-year cliff" schedule, the total vesting period is 4 years, but nothing vests until after the first 12 months.
What happens if a co-founder leaves before fully vesting?
If a co-founder leaves before fully vesting, they keep the equity that has already vested and forfeit the rest. If they leave before the cliff, they keep nothing. The unvested shares typically return to the company and are either retired or added back to the option pool.
Do founders need vesting schedules?
Yes. Founder vesting is just as important as employee vesting. Without it, a founder who departs early keeps their entire equity stake, which becomes dead equity on the cap table and a red flag for investors. All institutional investors require founder vesting as a condition of investment.
What is acceleration and how does it relate to vesting?
Acceleration is a provision that causes some or all unvested equity to vest immediately upon a specific trigger event. Single-trigger acceleration vests equity upon a change of control. Double-trigger requires both a change of control plus a qualifying departure. Most investors prefer double-trigger because it keeps founders incentivized to stay post-acquisition.
Can vesting schedules be customized?
Yes. Advisors typically vest over 1-2 years with a shorter or no cliff. Founders with prior track record sometimes negotiate credit for pre-incorporation work. However, deviating significantly from the 4-year/1-year cliff standard without good reason will raise questions from investors during due diligence.
Learn more
- Vesting explained: cliffs, acceleration, and the schedule that protects everyone
- Vesting schedules explained: cliff, graded, and the 4-year standard
- Dead equity: the silent killer of startups
- Founder agreements: what to include to protect everyone
- 83(b) election explained: how to save on taxes when you exercise early
Related terms
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