Co-Founder Equity Split Calculator
Calculate a fair equity split using the Slicing Pie dynamic equity method — the most mathematically fair approach to co-founder ownership. Free, instant, no signup.
Fair Equity, No Guesswork.
One of the hardest parts of co-founding is agreeing on ownership. Our Dynamic Equity model uses the Slicing Pie method principles to calculate fair splits based on actual contributions—cash or sweat. Secured by blockchain for transparent audit trails.
Capital Inputs
Cash injected is valued at face value. It fuels operations and buys materials.
Labor Inputs
Unpaid time is often valued at a premium (2x multiplier) to account for opportunity cost and risk.
Equity Simulator
Partner A Contribution
Partner B Contribution
This calculation assumes a 2x risk multiplier on unpaid labor. In a real scenario, Fractionall helps you track contributions daily to dynamically adjust equity until the first funding round.
What is the Slicing Pie Equity Method?
Slicing Pie is the industry's most mathematically fair dynamic equity model for startup co-founders.
The Problem with Fixed Equity Splits
- ✗ Agreed before contributions are known
- ✗ Doesn't account for different risk levels
- ✗ Leads to resentment if one founder contributes more
- ✗ #1 cause of co-founder breakups
How Slicing Pie Works
- ✓ Cash contributions valued at face value (1x)
- ✓ Unpaid labor valued at 2x market rate (risk multiplier)
- ✓ Equity adjusts dynamically as contributions are tracked
- ✓ Converts to fixed equity at first funding round or agreed milestone
The Formula
Fractionall tracks contributions daily and recalculates equity in real-time until your first funding round or agreed lock-in date.
Frequently Asked Questions
How do I calculate co-founder equity split?
Enter each co-founder's cash investment and estimated hours above. The calculator uses Slicing Pie: cash at 1x value, unpaid hours at 2x the hourly rate. The result is a dynamic equity percentage based on actual contributions.
What is a fair equity split for co-founders?
Fairness depends on contributions, not convention. While 50/50 is common, it only works if contributions are truly equal. A dynamic model like Slicing Pie ensures equity reflects reality — especially when one founder contributes more cash or time early on.
What is the Slicing Pie method?
Slicing Pie (by Mike Moyer) is a dynamic equity model where each contribution earns 'slices.' Cash earns 1 slice per dollar; unpaid labor earns 2 slices per dollar of market value. Equity is your slices divided by total slices — fair and mathematical.
When should co-founders agree on equity?
Agree on the equity methodology before starting — not the final numbers. Using a dynamic model like Slicing Pie means you start tracking contributions from day one, and the final split only locks in at a funding event or agreed milestone.
Lock In Your Equity with Legal Agreements
Our equity calculator shows you the split. Fractionall's platform tracks it daily and automates the legal agreements to enforce it.
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