Finance term
Vesting Cliff
Also known as: cliff vesting, equity vesting cliff
Definition
A vesting cliff is the minimum time period — typically one year — an employee or co-founder must remain with the company before any equity begins to vest. After the cliff, vesting continues incrementally (monthly or quarterly) over the remaining schedule.
Detailed explanation
Standard startup equity grants use a '4-year vest with 1-year cliff' structure: zero equity vests in the first 12 months; on month 12 (the cliff), 25% vests all at once; then 1/48th vests each subsequent month until fully vested at month 48. The cliff protects the company if a hire or co-founder leaves early — they walk away with nothing if they leave before the cliff.
The cliff serves two functions. Operationally, it screens for genuine commitment — a co-founder or key hire who leaves in month 11 contributed meaningfully but not sufficiently to justify a full ownership stake. Financially, it protects cap table integrity — allowing early departures to vest small slivers would create a large pool of small, disengaged shareholders.
For co-founders, vesting cliffs are particularly important. Without a cliff, a departing co-founder takes their full equity stake with them, often to a competitor or to do nothing — leaving remaining founders owning a smaller proportion of a company they're building alone. Investor term sheets typically require founder vesting (or acceleration provisions) as a condition of investment.
Acceleration provisions modify cliff logic in specific scenarios: 'single-trigger' acceleration vests all unvested equity on a change of control (acquisition). 'Double-trigger' requires both a change of control AND involuntary termination. Double-trigger is more standard today — single-trigger creates large equity overhang that can impede acquisition negotiations.
◈ Worked example
- Employee receives 48,000 shares with 4-year vest, 1-year cliff. At month 12: 12,000 shares vest (cliff). Months 13–48: 1,000 shares vest per month. Leaves at month 18: 12,000 (cliff) + 6,000 (months 13–18) = 18,000 shares total vested (37.5% of grant).
- Co-founder with no vesting cliff leaves in month 10 with 50% of company equity. Company must either repurchase at fair value (expensive) or operate with a 50% shareholder who contributes nothing. This is the problem vesting cliffs solve.
- Double-trigger acceleration: Employee has 24,000 unvested shares. Company acquired. Employee retained by acquirer. No acceleration (trigger 1 hit, trigger 2 — termination — not hit). Employee laid off 6 months post-acquisition: now trigger 2 hits, remaining unvested shares accelerate fully.
Common questions
The most-asked questions about Vesting Cliff — answered straightforwardly.
What happens to unvested equity if I leave before the cliff? +
You forfeit all unvested equity. If you leave before the cliff, you receive nothing from your equity grant. The unvested shares typically return to the company's option pool for future grants. If you leave after the cliff but before full vesting, you keep what has vested to that point.
Do vesting cliffs apply to co-founders as well as employees? +
Yes, and this is often more important for co-founders than employees. Investors almost always require founder vesting as a condition of investment. Common structure: co-founders agree to vesting at incorporation or when first outside capital is raised, with credit given for time already served if the company is 12+ months old.
Can vesting schedules be negotiated? +
Yes. Senior hires often negotiate for a shorter cliff (6 months), faster vesting (3-year instead of 4-year), or partial acceleration on termination. Late-stage hires sometimes receive grants with immediate partial vesting of 10–25% to compensate for lower-risk perception vs. an early employee. Everything is negotiable; 4-year/1-year is the default, not a requirement.
Further reading
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