Equity for a Technical Co-Founder: How Much Is the Right Amount?

"They're just coding" is a phrase that has caused some of the most painful founding team splits in startup history. Building a product from zero — with no guarantee the company will survive — is a high-risk, high-value contribution that needs to be compensated accordingly in equity, not treated as a service delivery.

FREE TO START

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
Start free

Set up your company's cap table in minutes.

Contribution vs. Market Rate: How to Think About It

A technical cofounder working full-time for zero salary is contributing two things: the market value of their time (what a developer contractor would charge) and the risk premium on that foregone income. In a dynamic equity model, both factors are captured through the contribution log and multiplier. The key difference from a business cofounder lies in the market rate for each role and the multipliers applied — not in some subjective notion of one being "more important."

  • The market value of their time — what a developer contractor would charge
  • The risk premium on the salary they are not taking
  • Both captured through the contribution log and the multiplier, not a subjective judgement

The IP Question: Who Owns What Was Built Before Incorporation?

If the technical cofounder built a working prototype before the company was incorporated, that IP may or may not legally belong to the company. Formalizing IP assignment at incorporation is essential — and compensating the technical cofounder for that assignment in equity is reasonable. Some teams give the technical cofounder a small fixed equity grant specifically for pre-incorporation IP contribution, on top of their ongoing dynamic equity participation.

Unassigned pre-incorporation IP is a due diligence blocker

If the technical cofounder built a working prototype before the company existed, that IP may not legally belong to the company. Formalize the assignment at incorporation — and it's reasonable to compensate that transfer in equity.

Avoiding the 'Developer for Hire' Trap

Business-side founders sometimes treat the technical cofounder as a vendor: low equity, expectations of delivery, limited decision-making authority. This usually ends badly. A technical cofounder who feels like an employee with a small equity stake will eventually leave for a salary — right when the product needs the most technical attention. Fair equity and genuine cofounder status create the alignment that keeps technical talent committed through the hardest phase.

30-50%a typical range for a technical cofounder in a two-person team when both are full-time from the start.

Frequently Asked Questions

Give your technical cofounder the equity their work deserves.

Equafy's dynamic equity model captures every type of contribution — time, code, IP, capital — and turns it into a fair, transparent ownership stake.

Get Started Free