What's new
You can now run waterfalls and exit scenarios in natural language in Claude for Excel, Claude Desktop, or Claude.ai, as part of the Carta Investors Plugin.
Today, the skill requires a custom waterfall model configured for the company in Carta, which is standard for most PE-backed portfolio companies. Support for companies without custom waterfalls is coming soon.
Why it matters
Exit scenario modeling is a question teams answer constantly: What would each holder receive if we exit at $X? Waterfall math is anything but simple; share classes, liquidation preferences, participation rights, and complex deal structures all affect the answer. And even once the model is right, assembling the right data and formatting the output adds more time.
The waterfall skill removes that burden. Carta already has the cap table. It connects directly, so you skip the export-and-paste step that introduces errors. The waterfall runs from the same source your cap table lives on, and results land in your spreadsheet without manual formatting. A scenario that used to take a day of model prep is now ready in a few prompts.
