Why the conversation gets skipped
Three things make founders avoid this on purpose, even when they know better. First, it feels transactional at the exact moment they're trying to build trust, so raising it seems to work against the relationship it's meant to protect. Second, nobody wants to be the one who brings up money first. It reads as greedy, even when it's the opposite: the founder who raises it earliest is usually the one most worried about fairness, not least. Third, in the earliest weeks everyone is contributing roughly the same thing, which is enthusiasm, so an even split feels obviously correct. It's only months later, once contributions diverge, that the split's actual consequences show up.
The default that isn't a decision
Here's the part that doesn't get said out loud: whoever files the incorporation paperwork first typically sets the default split, because most formation services default to even shares unless someone actively overrides it. That means the "decision" about equity is frequently made by momentum and administrative convenience, not by agreement. Nobody sat down and decided this was fair. It's just what the form pre-filled, and inertia did the rest.
A better way to have it
The founders who get this right treat it as an accounting exercise, not a negotiation. That reframe alone removes most of the discomfort, because you're no longer asking "who deserves more," you're asking "what did each person actually put in, across which categories." The categories that matter most:
The idea and the early validation. Worth something, but usually less than founders think. Ideas are cheap; execution is where the value gets created.
Capital at risk. Cash contributed, salary forgone, or personal runway spent to keep the thing alive.
Full-time commitment and timing. The person who quit their job in month one carried more risk than the person who joined full-time in month nine, even if they're equally talented.
Domain expertise and network. Existing relationships, technical depth, or credibility that shortens the company's path, not just general competence.
Score each founder honestly across these, and the split usually reveals itself instead of needing to be argued for. Just as important: separate equity percentage from decision rights and vesting. A founder can hold less equity and still have an equal vote on major decisions. And everyone, no exceptions, should vest over time. An unvested founder who leaves in month four holding fifteen percent of the company is a problem you're solving for the next decade. Standard four-year vesting with a one-year cliff isn't a lack of trust. It's what lets you extend trust in the first place, because everyone's incentives stay aligned with actually staying.
Have this conversation in week two, not month eighteen. It will feel premature. It is not. The conversation doesn't get easier by waiting, it gets more expensive, because the longer you wait, the more the current arrangement starts to feel like an entitlement instead of a decision anyone actually made.