Co-founders, team & legal

Should I use a dynamic equity split like Slicing Pie instead of fixed percentages?

Dynamic models like Slicing Pie allocate equity based on actual contributions over time, which is genuinely fairer at the pre-funding grunt stage when nobody knows who'll do what. The trade-off: they're harder to explain to investors and to administer, so many teams use them as a mental model then convert to fixed equity plus vesting at incorporation. Use it to inform your thinking; don't let it become a bookkeeping nightmare.

Go deeper

3 resources, 3 link-checked.

🛠️ Tool
✓ Link checked Freemium Advanced

The canonical dynamic-equity framework for fairly splitting ownership based on real contributions before funding, when nobody yet knows who'll do what. A strong mental model even if you convert to fixed equity later.

Slicing Pie: Dynamic Equity Split Model & Calculator

From slicingpie.com by Mike Moyer Framework + software + handbook

  • Allocate equity by actual contributions (time, money, ideas, relationships), not day-one guesses
  • Prevents the classic trap of permanent decisions made on temporary information
  • Best used pre-funding, then converted to fixed equity plus vesting at incorporation
Open slicingpie.com →
📄 Article
✓ Link checked India Free Intermediate

A practical India-specific walkthrough of equity split, vesting, and IP clauses in a co-founder agreement, from a mainstream Indian legal services provider. It covers what a US template will miss.

Co-Founder Agreement India 2026: Equity, Vesting & IP Guide

From vakilsearch.com by Vakilsearch Long read

  • Standard vesting is 4 years with a 1-year cliff, applied to every founder
  • Assign all IP to the company in writing from the start
  • Cover roles, decision-making, deadlock, and exit, not just percentages
Open vakilsearch.com →
📖 Book
✓ Link checked Paid Intermediate

The definitive, data-driven book on early founding-team decisions, drawing on quantitative research covering nearly 10,000 founders. It replaces gut-feel folklore about co-founders and equity with evidence.

The Founder's Dilemmas

From Princeton University Press by Noam Wasserman ~480 pages

  • Founding with friends and family is often less stable, not more
  • Rushed 'quick and equal' equity splits frequently cause later conflict
  • The relationship, role, and reward decisions you make early shape whether the startup survives
Open press.princeton.edu →

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