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Finance

Best Equity Calculators for Worthless Options

Tools to calculate what your underwater options are actually worth (spoiler: maybe nothing)

A spreadsheet and brutal honesty are cheaper than most equity calculator subscriptions.
👑 #1 Pick

Carta Cap Table Management

The industry standard for cap tables and equity modeling—where founders actually track their dilution

All 5 recommendations

Est. prices as of 3 Mar 2026

#1 · Carta · Premium Pick

Carta Cap Table Management

$0 - $400/month

The industry standard for cap tables and equity modeling—where founders actually track their dilution

  • ✓ Real-time cap table updates with waterfall modeling
  • ✓ Down-round and liquidation preference calculations built in
  • ✓ Integration with 409A valuations for tax compliance
  • ✗ Pricing scales aggressively; free tier is stripped down
  • ✗ Learning curve steeper than a simple calculator
#2 · Pulley · Best Value

Pulley Equity Management

$0 - $300/month

Transparent equity tools built for employees who actually want to understand their stake

  • ✓ Employee-friendly dashboard showing real payout scenarios
  • ✓ Scenario modeling for different exit valuations
  • ✓ Transparent fee structure with no surprise pricing tiers
  • ✗ Newer platform with smaller integration ecosystem
  • ✗ Limited historical data compared to Carta
#3 · DIY Community · Budget King

Google Sheets + Equity Calculator Templates

$0

Free, unsexy, but brutally effective if you actually understand preference stacks

  • ✓ Completely free and fully customizable to your situation
  • ✓ No SaaS vendor lock-in or data privacy concerns
  • ✓ Forces you to understand the mechanics of your cap table
  • ✗ Requires manual updates and financial modeling knowledge
  • ✗ Easy to make formula errors that compound into wrong valuations
#4 · Carta

eShares (now Carta Legacy)

$50 - $200/month

The older, simpler Carta—good if you just need basic equity calculations without enterprise bloat

  • ✓ Simpler interface than full Carta platform
  • ✓ Lower cost for small cap tables
  • ✓ Basic scenario modeling included
  • ✗ Being phased out in favor of Carta proper
  • ✗ Less frequent feature updates
#5 · Morgan Stanley

Shareworks (Morgan Stanley)

$150 - $500/month

Enterprise-grade but overkill for startups—useful mainly if your company has 500+ employees

  • ✓ Institutional-grade compliance and reporting
  • ✓ Handles complex RSU and option structures
  • ✓ Integration with major payroll systems
  • ✗ Designed for public companies and late-stage startups
  • ✗ Expensive and over-engineered for early-stage equity modeling