Slicing Pie Calculator: How the Model Works and What You Actually Need

The Slicing Pie model, created by Mike Moyer, has clear mathematical foundations. Rather than negotiating percentages upfront, founders log contributions — time, money, IP — and the model calculates their share of a dynamic pool in real time. The result is an equity split that is always fair at any given moment because it reflects exactly what each person has put in relative to the others.

Slicing Pie Calculator

Log each member's contributions by category. Slices = value × multiplier — the split updates live and always totals 100%.

65.2%

60,000 slices

34.8%

32,000 slices

Dynamic split

92,000 total slices

  • Founder A65.2%
  • Founder B34.8%

Perfect for the early stage — but investors need a fixed cap table.

A dynamic Slicing Pie split is fairest while you're bootstrapping. Equafy is the only tool that lets you run it live and then freeze it from dynamic to a static cap table in one click the day you raise.

Track this live and freeze it when you raise — with Equafy
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Manage your company's equity

Everything corporate in one place — no spreadsheets.

  • Live cap table — shares & % in real time
  • Shareholders & team
  • Funding rounds & dilution
  • Convertibles: SAFEs & notes
  • Legal documents — Legal Hub
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Set up your company's cap table in minutes.

The Core Formula: Grunt Fund Units

In Slicing Pie, contributions are converted into "slices" (Grunt Fund units). Time contributions are valued at a fair market rate — typically what the person would earn as a consultant. Cash and resources are valued at a multiplier, usually 2× for at-risk contributions, to account for the additional downside the contributor is absorbing. Each person's equity percentage at any moment equals their cumulative slices divided by the total slices of the whole team.

How a Slicing Pie Calculator Works

A proper calculator ingests each contribution event — hours logged by whom, capital invested by whom, assets transferred by whom — applies the appropriate rate and multiplier, and updates everyone's percentage continuously. As contributions accumulate month over month, the number of inputs and the interdependencies between them make manual spreadsheet tracking error-prone. A dedicated tool is the only reliable approach at any meaningful scale.

Slicing Pie in Equafy: Configured, Not Coded

Equafy implements the Slicing Pie model natively under its dynamic equity framework. You set a risk multiplier per contribution type (time, cash, IP), log contributions per member, and the platform calculates each person's dynamic share automatically. Unlike a generic spreadsheet template, Equafy tracks the full history, supports multiple contribution types, and can mix dynamic shares with fixed allocations for founders who prefer a guaranteed floor.

When to Lock In and Convert to Fixed Equity

A pure Slicing Pie model is a pre-money arrangement. At a priced funding round, equity needs to be fixed. The conversion happens by calculating everyone's slice percentage at the moment of conversion and writing those percentages into the formal cap table. Equafy's Issue Shares feature handles this: simulate the round, confirm the numbers, and the cap table updates permanently with a full audit trail.

Frequently Asked Questions

Run the Slicing Pie model inside a proper cap table tool.

Equafy implements dynamic equity natively — log contributions, apply multipliers, and get a live, auditable Slicing Pie calculation for your entire team.

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