The equity conversation is one that many founding teams avoid until it becomes unavoidable — by which point relationships are already strained. Getting ahead of it with a clear framework and the right tools is one of the best things a founding team can do in its first ninety days.
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The most common mistake is splitting equity by title: "I'm the CEO so I get more." Roles describe authority; they don't describe value creation. A technical cofounder writing the entire product might generate more value in year one than a business cofounder still finding product-market fit. Equity should track actual contribution — time, capital, IP, and resources — not org-chart position.
Every equity split comes down to four inputs: (1) time commitment — full-time vs. part-time, and for how long; (2) capital contributed — cash invested or assets transferred; (3) opportunity cost — what each founder is giving up to do this; (4) prior contribution — who built the prototype, who secured the first customer. Weight these honestly before opening a negotiation.
Fixed splits (60/40 or 50/50) are simple and legally clean, but they freeze the answer on day one. Dynamic splits — such as the Slicing Pie model — let equity float based on ongoing contributions, which is fairer when cofounders have different levels of availability or join at different times. Equafy supports both models and lets you combine them: lock in a base for each founder and let the rest accumulate dynamically.
| Fixed split | Dynamic split | Equafy | |
|---|---|---|---|
| Set when | Day one, then frozen | Floats with ongoing contributions | Fixed base + dynamic remainder |
| Simple and legally clean | Yes | Requires ongoing tracking | Yes — both models combined |
| Handles unequal availability | No | Yes | Yes |
| Handles founders who join later | No | Yes | Yes |
A common oversight is failing to carve out equity for future employees and advisors at the founding stage. Setting aside 10-20% before the split is negotiated means future dilution is shared equally rather than falling disproportionately on whoever holds the most equity. Equafy lets you configure a reserved pool as a separate allocation from the moment you set up your cap table.
Whatever split you agree on, wrap it in a vesting schedule. Standard founder vesting is four years with a one-year cliff: nothing vests before twelve months, then the rest vests monthly. Vesting protects all cofounders — if someone leaves early, they don't walk away with a disproportionate chunk. Equafy manages vesting grant tracking so you always know who has vested what.
The standard founder vest
Four years with a one-year cliff: nothing vests before month twelve, then the rest vests monthly. It protects every cofounder — if someone leaves early, they don't walk away with a disproportionate chunk.
Equal splits avoid early resentment but can cause deadlock and don't reflect different contributions. The right split depends on time commitment, capital, skills, and risk — not on a desire to be fair by default.
Late-joining cofounders should receive equity on a fresh vesting schedule, and the percentage should reflect both the risk they're taking and the traction already achieved. Equafy lets you simulate the dilution impact before committing.
Slicing Pie is a dynamic equity model where shares accumulate based on logged contributions. It's more accurate than a one-time fixed split when cofounders have different levels of involvement, but requires ongoing tracking.
Set it early — ideally before significant work is done. Update it at each funding milestone using a proper cap table tool rather than renegotiating percentages from scratch each time.
Equafy gives founding teams a shared, transparent cap table — with fixed allocations, dynamic contributions, and vesting built in from day one.
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