Choosing cap table software at the founding stage is a decision most teams make quickly — often defaulting to a spreadsheet or signing up for the first tool they find. The consequences of getting it wrong surface months later: missing audit trails, inconsistent vesting calculations, and cap table data that slows down due diligence when it matters most.
See how Aportia handles itEverything corporate in one place — no spreadsheets.
Set up your company's cap table in minutes.
Everything corporate in one place — no spreadsheets.
Set up your company's cap table in minutes.
For a company with two to ten shareholders, the essential features are: (1) accurate ownership percentages at all times; (2) vesting schedule tracking with cliff management; (3) a reserved pool tracker so you know what's left to grant; (4) convertible instrument modeling — SAFEs and notes are increasingly common at the seed stage; (5) a round simulator to preview dilution before committing to a term sheet. Everything beyond that is nice-to-have.
Spreadsheets fail not because they're wrong on day one, but because they're rarely maintained correctly over time. Version control, access permissions, formula errors, and stale data make spreadsheets a liability as the cap table grows. Conversely, enterprise platforms built for 100+ shareholder tables with fund administration are expensive and overwhelming for a founding team. The right tool meets you where you are.
| Spreadsheet | Enterprise platform | Right-sized tool | |
|---|---|---|---|
| Built for | General-purpose calculation | 100+ shareholder tables with fund administration | A founding team's actual cap table |
| Main risk | Version control, access permissions, formula errors, stale data | Expensive and overwhelming at the founding stage | — |
| Holds up over time | Rarely — it's seldom maintained correctly | Yes, at a cost you don't need yet | Yes |
Most cap table tools are built around fixed equity: you define percentages and they track them. Aportia adds native support for dynamic equity — Slicing Pie-style contribution tracking that adjusts ownership as the team contributes. For pre-revenue founding teams where contribution levels are unpredictable, this feature alone is a meaningful differentiator. Combined with fixed equity for members who want certainty and a reserved pool for future grants, it covers the full range of early-stage equity needs.
The feature most cap table tools don't have
Most tools assume fixed equity: you define percentages, they track them. Aportia adds native dynamic equity — contribution tracking that adjusts ownership as the team works — alongside fixed allocations and a reserved pool.
For the first few months, possibly. For anything involving vesting, convertibles, or multiple funding rounds, a spreadsheet becomes error-prone and hard to audit. Investors in due diligence will often ask for a proper cap table tool output.
Many VCs prefer Carta for later-stage companies. For seed-stage investments, they mainly want accurate data in a readable format — which any decent cap table tool provides.
Prices range from free (usually with limited features) to hundreds per month for enterprise tools. Aportia is currently free, with every feature that matters at the founding stage included.
Aportia covers every early-stage equity need — contributions, vesting, convertibles, round simulation — and it's free for now, so it costs nothing before you've raised a Series A.
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