Cliff vesting

Cliff vesting is a type of vesting schedule in which equity remains completely forfeit until a specified date (the “cliff”), at which point a large tranche vests all at once, after which remaining equity vests gradually. The classic structure is 4 years with a 1-year cliff: nothing vests for 1 year, then 25% vests immediately, then monthly thereafter. The cliff is a key retention mechanism because employees who leave before reaching it forfeit everything.

How cliff vesting works

With a standard 4-year/1-year cliff structure:

• Day 1 to Day 365: The employee holds 0 vested shares. If they leave, they forfeit their entire grant and own nothing.
• Year 1 (Day 366): The cliff arrives. 25% of the grant immediately vests.
• Year 1–4 (Days 367–1,460): The remaining 75% vests monthly (1.56% per month).
• Year 4 (Day 1,461+): All shares are fully vested and cannot be forfeited.

If an employee leaves at month 11, they have earned zero and lose all equity. If they leave at month 13 (after the cliff), they have earned ~26.56% of the grant (25% cliff plus 1.56% monthly) and forfeit the remaining 73.44%.

Why cliffs exist

The cliff serves a crucial function: employee retention and company protection.

1. Discourages early departure: Employees who leave before the cliff earn nothing. This is draconian and intentional. It means the employee must be genuinely committed to the company for at least one year, or their labor is uncompensated (in equity terms).

2. Reduces short-term exit incentives: An employee considering leaving at month 6 knows they will forfeit everything. By month 13, they have earned equity and feel more invested in staying.

3. Protects against bad hires: If an employee is hired but proves incompatible, the company can terminate them before the cliff without triggering vesting. This is especially important in startups where hiring decisions are sometimes hasty.

4. Founder lock-in: Founders often grant themselves equity with a cliff or with full vesting but a long post-IPO lock-up period. The cliff ensures continued commitment during critical early years.

Cliff vesting in different contexts

Startups: Nearly universal. Early-stage companies use 4-year/1-year cliff because turnover is common and the company needs employees to stay for the business to scale.

Public companies: Also standard, though the cliff is sometimes shorter (6 months) for mature companies with higher retention rates.

Executive/founder grants: Founders might grant themselves fully vested shares at incorporation (no cliff) but accept a lock-up period preventing sales for years. Alternatively, founders might be subject to a vesting cliff and claw-back provisions.

The cliff and negotiations

Cliff vesting is so standard that it is rarely negotiated away. However, prospective employees sometimes negotiate:

• Shorter cliff (6 months instead of 1 year), especially for senior hires.
• Acceleration on termination without cause: If the company fires the employee without cause, their cliff vests immediately (or they receive severance with accelerated vesting).
• Acceleration on change of control (acquisition), using either single-trigger (automatic) or double-trigger (conditional on being fired post-acquisition).

Startup founders sometimes grant themselves full vesting at incorporation (no cliff) because they assume permanent commitment. However, venture investors often push back, insisting even founders accept a vesting cliff to align all incentives.

Cliff vesting and taxation

For restricted stock, the cliff date is often when vesting begins and ordinary income tax is triggered. An employee might file an 83(b) election at grant to lock in the grant-date value for tax purposes, so the cliff does not trigger a re-valuation tax event.

For RSUs, the cliff is when the first batch of units settles into shares, and ordinary income tax is recognized.

For stock options, vesting and taxation are separate. Vesting (the cliff) determines when you can exercise; taxation occurs at exercise, not at vesting.

Cliff and double-trigger acceleration

In a public company acquisition, equity often has double-trigger acceleration:

• At acquisition announcement: Nothing vests early. The cliff and vesting schedule continue unchanged.
• If the employee is terminated without cause OR the acquirer does not assume the equity grant: The cliff immediately vests, and remaining equity accelerates to 100% vested.

This protects the employee from an acquirer attempting to cancel equity via termination, while also discouraging the company from retaining the employee in name only to block vesting.

Negotiating cliff vesting

Employees can sometimes negotiate:

• A partial cliff (e.g., 50% vests at 1 year, then monthly thereafter) instead of all-or-nothing.
• Cliff acceleration if the company is acquired or the employee is fired.
• A shorter cliff for senior hires or employees relocating for the job.

But the standard 1-year cliff is the market default and is rarely waived.

Cliffs and sign-up bonuses

To offset the cliff’s harshness, companies sometimes offer a cash or stock sign-up bonus (separate from the vesting grant). An employee might receive $100,000 in cash at hire, plus a 4-year equity grant with a 1-year cliff. The cash provides downside protection if the company fails or the employee is fired.

Founder cliffs and golden parachutes

Founders who do accept vesting sometimes negotiate for acceleration or waiver of the cliff in case of forced departure or a “bad exit.” For example, a founder grant might cliff after 1 year normally, but if the founder is terminated without cause or the company is sold for a price below X, the cliff is waived and vesting accelerates.