Equal Split

A founder split where everyone gets the same percentage (typically 50/50 for two founders). Can be fair when contributions are truly equal, but often becomes unfair as effort and commitment diverge over time.

Why it matters

Equal splits feel fair on day one but rarely stay fair. Contributions almost never remain equal over time, and the resulting resentment is a leading cause of co-founder breakups. Research shows that equal splits correlate with lower startup success rates when they mask real differences in commitment.

How it works

A 50/50 split between two founders means each owns half. It works when both founders are genuinely contributing equally in terms of time, cash, risk, and skills. Problems emerge when one person goes full-time while the other stays part-time, or when one invests cash that the other can't match. Without vesting, an equal split also creates massive dead equity risk if someone leaves early. If you do go with an equal split, always pair it with vesting and a cliff to protect both sides.

Learn more

• The Hidden Cost of 50/50 Splits
• Equal Splits Are Increasing

Related terms

• Founder Equity Split
• Dynamic Equity
• Dead Equity
• Vesting