Vesting schedule: what it means for startup founders

October 26, 2026

A vesting schedule is the timetable on which a founder or employee earns their equity. The startup standard is four years with a one-year cliff, then monthly. Founders should put their own stock on a vesting schedule when the company is formed. Investors will require it at the first priced round anyway, and doing it at the start, with an 83(b) election, avoids tax problems later.

Key takeaways

Four years with a one-year cliff, vesting monthly after that, is the standard.
Founder stock should vest too, starting at formation.
The vesting commencement date can be earlier than the grant date, to credit work already done.
For restricted stock, "vesting" means the company's right to buy back the shares lapses.
Acceleration happens only if the agreement provides for it or the board approves it.

What is a vesting schedule?

Vesting means earning equity over time by continuing to work for the company.

For stock options, unvested options can't be exercised, and they're forfeited when the person leaves.
For restricted stock, which founders usually hold, the person owns the shares from day one, but the company can buy back the unvested shares at the price the person paid, typically $0.00001 per share for founder stock, if the person leaves. Vesting is the gradual lapse of that repurchase right.

Most vesting is time-based. Some grants vest when milestones are met instead (see below).

What is a cliff, and how does four years with a one-year cliff work?

A cliff is a waiting period before anything vests, usually one year. If the person leaves before the cliff, nothing has vested.

Example: An employee receives 1,000 shares vesting over four years with a one-year cliff. Nothing vests in the first year. On the one-year anniversary, 250 shares (one quarter) vest at once. The remaining 750 shares vest monthly over the next 36 months, about 21 shares a month.

Typical language:

1/4th of the Vesting Shares shall be released from the Repurchase Option on the 12-month anniversary of the Vesting Commencement Date, and an additional 1/48th of the Vesting Shares shall be released from the Repurchase Option on the corresponding day of each month thereafter (and if there is no corresponding day, the last day of the month), until all Vesting Shares are released from the Repurchase Option.

Should founder stock vest?

For a founding team, yes. Vesting protects each founder from a co-founder who leaves early and keeps a large stake, and investors will require founder vesting at the first priced round if it isn't already in place. Setting vesting yourselves at formation is also the stronger position. A reasonable schedule that's already in place usually survives the first round. If nothing is in place, the investors write the terms, and theirs are rarely kinder. Founders who have already been working on the company often negotiate credit for that time, either by starting the vesting clock earlier or by having part of their shares vested at issuance.

Solo founders are different. Vesting mainly protects co-founders from each other, and with only one founder that risk largely goes away, so it isn't unusual for a solo founder to hold fully vested stock. If an investor asks for vesting at the first priced round, you can add it then. The caveat: if you plan to bring on co-founders, put your own shares on a vesting schedule now, so everyone on the founding team is on the same terms.

Can the vesting start date be earlier than the grant date?

Yes. The vesting commencement date is a term of the agreement, and it can be set to the date the person actually started working, including before the company was incorporated. Example language:

The Vesting Commencement Date is [March 1, 2026].

The 30-day deadline for an 83(b) election still runs from the date the shares are issued, not from the vesting commencement date. See 83(b) Election.

Monthly or quarterly vesting after the cliff?

Monthly is standard. Quarterly vesting is used by some companies to simplify administration, and it's slightly less favorable to the holder.

How does milestone-based vesting work?

Shares vest when defined goals are met, such as a product launch or a revenue target, rather than with the passage of time. If you use it, define each milestone objectively, say who decides whether it's been met (usually the board), and consider a time-based backstop so shares still vest eventually. Because the vesting dates are unpredictable, holders of milestone-vesting restricted stock should consider an 83(b) election when the shares are issued.

Can vesting be accelerated?

Only if the agreement provides for it, or the board approves it.

Built-in acceleration is usually tied to a sale of the company. Double trigger (a sale followed by termination without cause) is standard for founders and executives. See Single Trigger vs Double Trigger Acceleration.
Board-approved acceleration, for example for a departing employee, requires board approval and an amendment to the award. Check for investor approval rights and talk to a tax advisor about the effect.

Founders sometimes ask for acceleration if they're fired without cause, separate from any sale. Think hard before agreeing to that among co-founders. "Cause" usually covers misconduct, such as fraud or a felony, not a founder who simply isn't working out. A co-founder let go for weak performance could walk away with shares the rest of the team is still earning.

Common mistakes

No vesting on founder stock. Vesting protects the founders from each other as well as satisfying investors.
No 83(b) election on founder restricted stock. Without one, each vesting date can be a taxable event.
A vesting start date set to the grant date when the person actually started months earlier.
Undefined "cause" or "service." Founder agreements should define what ends vesting, and whether service as a director or consultant counts as continuing service.