⚖ī¸ Founder Equity Split Calculator

Real-time equity modeling with vesting schedules and dilution tracking

Founder Details

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

Factor Weights

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

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.

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

Series A

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.

📊 Live Preview Updates in Real-Time

Cap Table Summary

Shareholder Initial % After Dilution
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Configure founders in the left panel to see equity split preview