Cap Table Dilution Waterfall Simulator

Every funding round feels like progress. Your ownership stake tells a quieter story underneath it, one this tool makes impossible to ignore.

Reading This Tool

How To Use This Simulator

Enter your starting founder shares, option pool size, and the pre-money valuation and raise amount for up to three funding rounds.

The chart shows exactly how ownership splits between founders, the option pool, and each round's investors, stacking to 100% at every stage so dilution is visible at a glance.

Your Inputs

Employee Option Pool (Of Post-Pool Cap Table) 15.0%

Seed Round: Pre-Money Valuation $8,000,000

Seed Round: Amount Raised $2,000,000

Series A: Pre-Money Valuation $20,000,000

Series A: Amount Raised $8,000,000

Series B: Pre-Money Valuation $60,000,000

Series B: Amount Raised $20,000,000

This is a simplified model assuming standard priced equity rounds with no anti-dilution ratchets, pro-rata top-ups, or option pool refreshes at each round, all of which would further affect these numbers in an actual term sheet.

Founder Ownership Over Time

Founder Ownership After Series B

Founder Ownership, Post-Pool

Total Diluted Away

0 pts

Ownership Stack By Round

Actual cap tables involve convertible instruments, SAFEs, liquidation preferences, and negotiated anti-dilution terms that meaningfully affect real outcomes. This tool models a simplified, standard priced-round scenario for planning purposes only.

Raising a round and want the SAFE conversion math too?

See The Exit Waterfall Instead →