---
title: "What Is Founder Agreement?"
term: "Founder Agreement"
description: "A founder agreement is an early contract among co-founders setting equity splits, roles, vesting, IP assignment, and departure terms—before or alongside company incorporation."
date: 2026-07-25T00:00:00.000Z
updated: 2026-07-25T00:00:00.000Z
topics: ["venture-capital"]
source: https://venturecapitaltracker.com/glossary/founder-agreement
---

# What Is Founder Agreement?

> A founder agreement is an early contract among co-founders setting equity splits, roles, vesting, IP assignment, and departure terms—before or alongside company incorporation.

**A founder agreement** is a binding arrangement among company founders documenting equity ownership, roles, decision rights, vesting schedules, intellectual property assignment, and leaver provisions—establishing rules before significant outside investment.

### How it works

Typical clauses: split of initial equity, four-year vesting with one-year cliff, reversal if a founder leaves early ([leaver provisions](/glossary/leaver-provisions)), assignment of prior work product to the company, and dispute resolution. May live in a standalone founders' agreement, restricted stock purchase agreements, or LLC operating agreement. Paired with [PIIA](/glossary/piia) for confidentiality and invention assignment.

Investors require all founders on standard vesting—even if they started years ago—often resetting unvested shares at financing. Unclear verbal splits without documentation trigger renegotiation under pressure. [Founder ownership](/glossary/founder-ownership) percentages in the agreement should match cap table entries post-incorporation.

Lawyers recommend signing before substantial IP or revenue accrues to avoid tax and ownership disputes.

### Why it matters

- **Founders:** Align expectations while relationships are collaborative; revisit roles at milestones, not only at conflict.
- **Investors:** Clean founder docs reduce key person and cap table risk; missing IP assignment can block closing.

### Common mistake

Equal equity splits without vesting because "we trust each other." Trust does not remove the need for cliffs when one founder leaves in year two with 50% ownership.

### Related ideas

See [founder ownership](/glossary/founder-ownership), [PIIA](/glossary/piia), [leaver provisions](/glossary/leaver-provisions), and vesting.

## FAQ

### What is a founder agreement in simple terms?

Co-founders write down who owns what, who does which job, how shares vest, and what happens if someone leaves— before the company gets big or raises institutional money.

### Why does founder agreement matter?

It prevents painful breakups from freezing the company. VCs diligence founder agreements and IP assignment early; missing docs delay closes and scare investors.


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Source: https://venturecapitaltracker.com/glossary/founder-agreement