Co-Founder Prenup
Discuss culture, conflict, scaling, and exit expectations before they divide founders
- Difficulty
- Moderate
- Time to result
- ~weeks to results
- Steps
- 5
- Confidence
- 99%
The Co-Founder Prenup is a set of conversations held before predictable tensions become crises. Founders compare what kind of company they want, which culture and values they intend to build, what kinds of people they will hire, and what success means. They also address harder contingencies: how they will know if one founder is not scaling, what they will do about it, and how they will resolve a disagreement they cannot settle themselves. Exit expectations deserve explicit financial and non-financial discussion because founders may silently imagine very different sale prices or company horizons. Cohn stresses that the conversation may not resolve every future issue. Its value also lies in surfacing assumptions and establishing a habit of bringing uncomfortable topics into the open.
Origin
Extracted from The Tim Ferriss Show from Cohn's checklist for managing the special relationship between co-founders.
Core principles
- 01Excitement does not prove founders share the same expectations
- 02Future disagreements are easier to discuss before they become urgent
- 03Culture and exit expectations shape operating decisions
- 04The habit of real talk can matter even when a topic is not fully resolved
How to run it
- 1
Align on the company
Describe the kind of business, culture, values, and workforce each founder intends to build.
Pro tip Compare specific hiring choices rather than relying on broad value words.
Watch out Unspoken differences can produce two companies inside one legal entity.
- 2
Define success
State what success looks like financially and otherwise for each founder.
Pro tip Discuss plausible offers and time horizons, not only a grand long-term vision.
Watch out A declaration that the company will last one hundred years does not answer personal exit questions.
- 3
Plan for scaling gaps
Agree on how to recognize when a founder is not scaling with the role and what actions will follow.
- 4
Design conflict resolution
Set rules of engagement and a method for resolving a major disagreement that the founders cannot settle directly.
Pro tip Practice real talk while the relationship is healthy.
- 5
Revisit the agreement
Return to the questions as company scale and personal goals change.
Watch out An early conversation does not eliminate the need for later communication.
In the wild
Ferriss describes a successful company in which one founder could want to sell at one valuation while another wants ten or one hundred times that value. Without an earlier conversation, real traction and a genuine offer can expose a fundamental conflict at the worst moment.
→ Explicit early expectations make later offers discussable rather than unexpectedly divisive.
Common mistakes
Assuming shared music
Mutual excitement about building does not mean founders share assumptions about culture, scale, or exit.
Using a grand vision as an answer
A one-hundred-year-company aspiration avoids specific discussion of what each founder hopes to achieve.
Is it for you?
Best for
It is best for prospective or current co-founders who need explicit alignment on company-building and conflict.
Not ideal for
It is not ideal as a replacement for legal agreements or ongoing candid communication.
From the transcript
“what if one of us isn't scaling how will we know and what we do about it”
“what will happen if we get into a massive disagreement that we can't resolve how do we resolve it and what are the kind of…”
“having the conversation in advance may not even resolve anything but at least it brings up topics”
From the episode
#539: Alisa Cohn on Prenups for Startup Founders, How to Reinvent Your Career, the Importance of "Pre-Mortems," and the Three Selves
Alisa Cohn