What is a Cliff?
A cliff is a waiting period at the beginning of a vesting schedule during which zero tokens are released. After the cliff period ends, a portion of tokens unlocks all at once, and the remaining tokens continue to vest gradually.
For example, with a “1-year cliff, 4-year vest”:
- Months 0-12: Nothing unlocks (cliff period)
- Month 12: 25% of tokens unlock at once (cliff vest)
- Months 12-48: Remaining 75% unlocks linearly (monthly)
Why Cliffs Exist
Prevent Hit-and-Run
Without a cliff, a team member or investor could receive tokens on day 1 and sell them immediately, abandoning the project. The cliff ensures they stay committed for at least the cliff duration.
Align Incentives
If a founder leaves after 3 months, they get zero tokens. If they stay past the cliff (12 months), they get a significant unlock. This rewards commitment.
Price Protection
Without a cliff, all team tokens would be sellable at launch, creating massive sell pressure. The cliff staggers the unlock, protecting early investors.
Common Cliff Durations
| Stakeholder | Typical Cliff | Typical Vesting Period |
|---|---|---|
| Founders | 12 months | 4 years |
| Employees | 12 months | 4 years |
| Advisors | 6 months | 2 years |
| Seed Investors | 6-12 months | 2-3 years |
| Public Sale | None (or immediate 25%) | 6-12 months |
Cliff in Practice
Employee Departure Before Cliff
If an employee leaves at month 10 (before a 12-month cliff), they forfeit all vested tokens. This is a common retention mechanism in both crypto and traditional startups.
Cliff Vest Event
When the cliff date arrives, a large chunk of tokens unlocks. This is called the “cliff vest” and can be a significant event:
- 25% of total allocation unlocks at once
- This can create sell pressure on the token price
- Savvy investors monitor cliff dates for potential price impact
Frequently Asked Questions
Q: Can I sell tokens during the cliff period? A: No. During the cliff, zero tokens are unlocked. You can’t sell, transfer, or use tokens that haven’t vested. The smart contract prevents it.
Q: What happens if the project is acquired during the cliff? A: This depends on the vesting contract terms. Some contracts include “acceleration” clauses that vest all tokens immediately upon acquisition. Others maintain the original schedule.
Q: Are cliffs the same in crypto and traditional startups? A: The concept is identical, but crypto cliffs are enforced by smart contracts (trustless, automatic), while traditional startup cliffs are enforced by legal agreements and board approval. Crypto cliffs are more transparent — anyone can verify the vesting schedule on-chain.