Cliff vesting means no tokens unlock until a set date, then a lump sum unlocks. See how crypto vesting schedules work, with a worked example.

Cliff vesting is a token or equity vesting rule where nothing unlocks until a fixed waiting period (the cliff) has passed, after which a lump sum unlocks at once and the rest usually releases gradually. In crypto it is used for team, investor and advisor allocations, and the date a cliff ends is often one of the biggest supply events in a token's life.
Vesting is the process by which someone gains full ownership of tokens they were promised. A vesting schedule sets when and how fast that happens. The cliff is the first part of the schedule: a period, often 6 or 12 months, during which zero tokens are released.
When the cliff ends, the tokens that would have vested during that period unlock together. After that, most crypto schedules switch to linear vesting, releasing a slice every block, day or month until the full allocation is out. A "1-year cliff, 4-year vest" is the classic shape, borrowed from startup equity.
In crypto, vesting is usually enforced by a smart contract that holds the tokens and only lets the beneficiary claim the unlocked portion. That makes the schedule publicly checkable, which is useful when you are researching a project's tokenomics.
Some schedules have a cliff with no linear tail (a pure "cliff unlock"), and some use several smaller cliffs. The terms are typically published in the project's documentation or token page; for example, our overview of JewelSwap tokens shows the kind of token-level detail worth reading before you buy anything.
Hypothetical: say a project's core team is allocated 48,000,000 tokens on a 1-year cliff followed by 36 months of linear monthly vesting (4 years in total).
Now say only 100,000,000 tokens are circulating on the cliff date. The 12,000,000-token release adds 12% to circulating supply overnight. If even a fraction of that is sold, the market has to absorb it, which is why traders track unlock calendars.
Cliffs exist to align incentives. A team that cannot sell for a year has a reason to keep building, and a cliff stops someone from joining, collecting tokens and leaving in week two.
For a DeFi user, the practical points are:
Cliff vesting means no tokens unlock until a set date (the cliff). On that date a lump sum unlocks at once, and the rest of the allocation usually vests gradually afterwards.
Linear vesting releases tokens in small, equal amounts from day one. Cliff vesting releases nothing at first and then a large block on the cliff date. Most crypto schedules combine both: a cliff, then linear release.
A cliff can add a large amount of tradable supply in one day. If holders sell, the market must absorb it. The effect depends on the unlock size relative to circulating supply and trading volume, and markets often price it in before the date.
JewelSwap Crypto Glossary · educational, not financial advice. Updated 2 October 2026. Browse the full glossary.