Cliff vesting is an equity compensation structure where an employee or founder receives zero ownership of their allocated shares until a predetermined time period elapses, at which point a substantial portion—often 25% or one year's worth—vests all at once. This all-or-nothing approach contrasts with gradual vesting schedules, creating a distinct threshold that must be crossed before any equity is earned.
In practice, cliff vesting typically operates as the first stage of a longer vesting period. A standard arrangement might include a one-year cliff followed by monthly or quarterly vesting over the remaining three years. If an employee leaves before the cliff date, they forfeit all equity. Once they pass that milestone, they immediately receive their cliff portion and continue accruing shares on the regular schedule.
Why It Matters
Cliff vesting protects startups and investors from equity dilution when team members leave prematurely. The one-year cliff has become standard in venture-backed companies because it ensures employees demonstrate genuine commitment before earning meaningful ownership. For investors, this mechanism reduces cap table complexity and preserves equity for team members who stay through critical growth phases. It also establishes clear expectations: join the company with the understanding that the first year is probationary for equity purposes, regardless of salary arrangements.
Example
Sarah joins a startup with a four-year vesting schedule and a one-year cliff on her 40,000 shares. After 11 months, she decides the role isn't right and resigns—she leaves with zero shares despite nearly completing the cliff period. Her colleague Michael stays for 13 months before departing. He immediately vests 10,000 shares (25% of his grant) when he crosses the 12-month mark, plus roughly 833 additional shares for the extra month, totaling approximately 10,833 shares. If Michael had stayed the full four years, he would have vested all 40,000 shares, with the remaining 75% accruing monthly after his cliff.