Founder Equity Split Calculator | Fair Equity Distribution Tool

Founder Details

Add founders and enter their contributions. Watch the preview update in real-time.

Number of Founders ?

Factor Weights

Customize how much each factor influences the equity split. Defaults are based on typical startups.

Cash Investment: 30% ?

Time Commitment: 25% ?

Expertise: 25% ?

Idea Contribution: 20% ?

Vesting Schedule

Protect the company and co-founders by adding vesting to founder shares.

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Why Vesting? Without vesting, a founder who leaves after 1 month keeps 100% of their equity. Vesting ensures founders earn equity over time.

Vesting Schedule ?

Funding Rounds

Model how founder equity will be diluted through funding rounds. See results in the preview.

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Understanding Dilution: When you raise funding, new investors buy shares, diluting existing shareholders. Your smaller slice is of a much bigger pie.

Seed Round

Investment ($)

Pre-Money Valuation ($)

Series A

Investment ($)

Pre-Money Valuation ($)

Export & Next Steps

Save your cap table and take the next steps to formalize your equity split.

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Next Steps:

Save this cap table for your records
Discuss with co-founders and reach agreement
Document in Founder Stock Purchase Agreement
File 83(b) election within 30 days of stock grant
Set up cap table management (Carta, Pulley, etc.)

Need Help Formalizing This?

I can help you create the legal documents to implement this equity split, including founder stock purchase agreements, vesting schedules, and 83(b) election filing.

Contact: owner@terms.law
Attorney: Sergei Tokmakov, Esq.

⚖️ Founder Equity Split Calculator