Equity Vesting Explained: Cliff Vesting vs Graded Vesting

The equity section of your offer letter is usually the most opaque part of an already complicated document. "4-year vesting schedule with a 1-year cliff" looks like straightforward information, but it contains several important decisions your employer made about your compensation — decisions that directly affect what you'll actually receive if you stay, if you leave, or if the company gets acquired.

Here's what these terms actually mean and what's worth negotiating before you sign.

What Vesting Actually Means

Equity in an employment context — whether stock options, RSUs (Restricted Stock Units), or restricted stock — doesn't transfer to you all at once. It "vests" over time, meaning you earn ownership incrementally based on how long you stay employed.

An unvested equity grant is essentially a promise of future compensation, contingent on continued employment. If you leave before that equity vests, you typically forfeit the unvested portion.

This structure serves the employer's interest (retention) and can align with yours (compounding value over time) — but the specific terms of the vesting schedule matter enormously.

Cliff Vesting vs. Graded Vesting

Cliff vesting means you receive nothing until you reach a specific date — the "cliff" — and then a large portion vests all at once.

The most common structure in tech: a 1-year cliff on a 4-year schedule. You receive zero equity for the first 12 months. On your 12-month anniversary, 25% of your total grant vests immediately. After that, the remaining 75% typically vests monthly or quarterly over the next 3 years.

The cliff creates a stark incentive: leave at month 11 and you get nothing. Leave at month 13 and you've already received 25% plus two months of continued vesting.

Graded vesting (also called "graduated" or "incremental" vesting) spreads the vesting evenly over time from day one, with no cliff. A 4-year graded schedule might vest 1/48th of your total grant each month. You earn equity from the start of employment.

Graded vesting is more employee-friendly — you begin accumulating equity immediately. Cliff vesting is more common in startups and venture-backed companies because it ensures employees stay at least through the initial probationary period.

Monthly vs. Quarterly Vesting

After the cliff, equity typically vests on a regular schedule. The distinction matters:

Monthly vesting means you earn equity every month. If you leave mid-quarter, you've earned everything through your last full month of employment.

Quarterly vesting means you earn equity at the end of each quarter. If you leave in the middle of a quarter, you may earn nothing for that partial quarter — or the company may prorate. Read your equity agreement carefully on this point.

Monthly vesting is better for employees. Quarterly vesting creates artificial "best times" to leave (right after a vesting date) and can cost you a meaningful amount of unvested equity if your departure timing doesn't align.

What Happens to Unvested Equity When You Leave

When you leave — voluntarily or through termination — unvested equity is typically forfeited back to the company or option pool. There's usually no payment for it.

Vested equity is different. If you hold RSUs, vested RSUs are typically converted to shares (or, at public companies, you already hold the shares). If you hold stock options, vested options usually must be exercised within a window — typically 90 days from your departure date.

The 90-day exercise window is often the critical constraint. Exercising options means buying the shares at the strike price. If the strike price is below the current fair market value, you have a gain — but you also have a tax event and a cash requirement. Many employees forfeit perfectly valuable vested options simply because they can't (or don't want to) come up with the cash to exercise within 90 days.

Some companies offer longer exercise windows — up to 10 years. This is a significant employee benefit that's worth asking about at offer time.

Acceleration: What Happens on Acquisition

Acceleration clauses determine what happens to your unvested equity if the company is acquired.

Single-trigger acceleration means all (or a portion) of your unvested equity vests immediately upon the acquisition event itself, regardless of what happens to your role afterward.

Double-trigger acceleration requires two events: (1) the acquisition and (2) your termination or constructive termination within a specified window (typically 12-18 months) after the deal closes. If you're retained post-acquisition, unvested equity doesn't accelerate under a double-trigger structure.

Most employee equity grants have double-trigger acceleration. Most founder equity grants have single-trigger (or no requirement for the second trigger). This is negotiable for senior employees — particularly for CXO-level roles.

What to Negotiate in the Equity Section

Exercise window. Ask for the longest post-departure exercise window available. 5-10 years is increasingly common at employee-friendly companies. This can be worth more than a 5-10% increase in grant size.

Cliff length. The standard 1-year cliff can sometimes be shortened to 6 months, or eliminated entirely for senior hires. This reduces the all-or-nothing risk of leaving before the cliff.

Double-trigger acceleration. If you're at a senior level, ask for a double-trigger acceleration clause: if the company is acquired and your role is changed or eliminated, your unvested equity vests. This is reasonable and some companies will agree.

Vesting frequency. Monthly vesting after the cliff is preferable to quarterly. It's often negotiable at companies with equity management flexibility.

Have equity terms in your offer letter that you're not sure about? Upload it to KlausClause and get a plain-English breakdown of your vesting schedule and what each clause actually means for you.

This article is for informational purposes only and does not constitute legal advice.