Best Cap Table Software for Startups in 2027

The best cap table software for startups in 2027 gives you automated equity tracking, SAFE conversion modeling, 409A valuation integration, and investor-ready reporting — without charging enterprise prices for seed-stage features. This guide compares the top platforms available today, including free options, so you can pick the right tool for your stage and budget.

Cap table management has changed significantly heading into 2027. AI-powered features, MCP (Model Context Protocol) integrations, and open-source alternatives have given founders more options than ever. Here's what's worth your time and what isn't.

What to Look for in Cap Table Software in 2027

Before comparing platforms, here's what actually matters at each stage:

Pre-Seed / Seed Stage

• •Free or low-cost tier — you shouldn't pay $3,000/year to track 2 founders and a SAFE
• •SAFE and convertible note tracking — model conversions at different valuations
• •Basic vesting schedules — 4-year cliff vesting for founders and early hires
• •Clean exports — generate a cap table PDF for investor meetings

Series A and Beyond

• •Waterfall analysis — model liquidation preferences and participation rights
• •409A valuation integration — keep strike prices current without manual work
• •Scenario modeling — see dilution impact before you agree to terms
• •Data room integration — share cap table docs with investors during diligence
• •Audit trail — every change logged for compliance and governance

2027-Specific Features

• •AI/MCP integration — manage your cap table through AI agents in tools like Claude Code or Cursor
• •Open-source option — inspect the code, own your data, avoid vendor lock-in
• •API-first architecture — integrate cap table data into your existing workflows

The Best Cap Table Software Compared

1. OpenCap Stack — Best Free and Open-Source Option

Price: Free tier available | Open source

Best for: Seed to Series B startups that want full control of their data

OpenCap Stack is the only open-source cap table platform with a full feature set. You get equity tracking, SAFE modeling, dilution calculators, vesting automation, and investor data rooms — without paying per-stakeholder fees.

What sets it apart in 2027:

• •MCP integration — the first cap table platform with native Model Context Protocol support. Manage your cap table through AI agents in Claude Code, Cursor, or any MCP-compatible tool
• •AI-powered data rooms — AI agents can read and analyze your data room documents during due diligence
• •Full data portability — export everything, anytime. No lock-in. You can self-host or use the cloud version
• •Open source — audit the code, contribute features, or fork it entirely

• •Stakeholder and share class management
• •SAFE and convertible note conversion modeling
• •Automatic vesting schedule tracking
• •Dilution calculator and waterfall analysis
• •409A valuation integration
• •Investor data rooms with granular access controls
• •Board management tools
• •Document generation and e-signatures

Limitations:

• •Newer platform — smaller ecosystem of integrations compared to Carta
• •Self-hosting requires technical resources

Start free: opencapstack.com/register

2. Carta — Best for Late-Stage and Enterprise

Price: Starting ~$3,000/year for startups | Enterprise pricing for growth stage

Best for: Series B+ companies that need 409A valuations bundled with cap table management

Carta is the market incumbent and the platform most VCs recognize by name. Their 409A valuation service is tightly integrated, and their Transfer Agent capabilities make them a one-stop shop for later-stage companies.

Strengths:

• •Bundled 409A valuations
• •Transfer Agent services for public-readiness
• •Large ecosystem — most law firms and VCs know how to work with Carta exports
• •Employee equity portal for option holders

Weaknesses:

• •Expensive — pricing has increased significantly, with many features gated behind higher tiers
• •Data portability concerns — exporting your full cap table data can be difficult
• •No open-source option — you're fully dependent on their platform
• •No AI/MCP integration
• •Overkill for pre-seed and seed-stage companies

3. Pulley — Best Mid-Market Alternative to Carta

Price: Starting ~$1,000/year | Free tier for very early stage

Best for: Seed to Series A startups looking for Carta-like features at a lower price

Pulley positions itself as the founder-friendly alternative to Carta, with simpler pricing and a cleaner interface.

Strengths:

• •Lower pricing than Carta at comparable feature levels
• •Clean, modern interface
• •Good SAFE modeling tools
• •YC-backed with strong startup community adoption

Weaknesses:

• •Limited free tier — most useful features require paid plans
• •No open-source option
• •No MCP/AI integration
• •Smaller ecosystem than Carta
• •Data export limitations

4. AngelList Stack (formerly Clerky + AngelList)

Price: Varies by service | Some free tools

Best for: Companies already in the AngelList ecosystem for fundraising

AngelList has consolidated several equity tools into their Stack product. If you're already raising through AngelList, the integration is seamless.

Strengths:

• •Integrated with AngelList fundraising
• •Rolling funds and syndicate management
• •Good for companies with AngelList investors

Weaknesses:

• •Primarily useful if you're in the AngelList ecosystem
• •Cap table features less comprehensive than dedicated platforms
• •Not a standalone cap table solution for most companies

5. Shareworks (Morgan Stanley)

Price: Enterprise pricing

Best for: Late-stage and public companies

Shareworks is an enterprise equity management platform acquired by Morgan Stanley. It's designed for companies with hundreds or thousands of equity holders.

Strengths:

• •Enterprise-grade compliance and reporting
• •Global equity plan administration
• •Public company readiness
• •Morgan Stanley backing and integration

Weaknesses:

• •Not designed for startups — overkill and overpriced for early-stage
• •Complex implementation
• •Enterprise sales cycle

6. Cake Equity

Price: Starting ~$500/year

Best for: Australian and international startups

Cake Equity has carved out a niche in the Australian and international market, with features designed for non-US equity structures.

Strengths:

• •Strong international support (Australia, UK, Singapore)
• •Employee equity portal
• •Scenario modeling
• •Lower price point than Carta

Weaknesses:

• •Smaller US presence
• •Fewer integrations with US legal and accounting tools
• •No AI/MCP features

Feature Comparison Table

How to Choose: Decision Framework

Choose OpenCap Stack if:

• •You want a free, full-featured cap table from day one
• •Data ownership and portability matter to you
• •You want AI/MCP integration for managing equity through code
• •You're technical and value open-source transparency
• •You're at any stage from pre-seed to Series B

Choose Carta if:

• •You're Series B+ and need bundled 409A valuations
• •You need Transfer Agent services
• •Your investors and lawyers specifically require Carta exports
• •Budget isn't a primary constraint

Choose Pulley if:

• •You're seed to Series A and want a Carta alternative at lower cost
• •You prioritize a clean, modern interface
• •You're comfortable with a closed-source, hosted-only solution

Choose AngelList Stack if:

• •You're already raising through AngelList
• •Your investors are AngelList syndicates or rolling funds

Trends Shaping Cap Table Software in 2027

AI-Native Cap Table Management

The biggest shift in 2027 is AI integration. With MCP (Model Context Protocol), AI agents can now read, update, and analyze cap tables directly. This means founders can ask their AI assistant to model a funding round, check vesting schedules, or generate board reports — without logging into a dashboard.

OpenCap Stack is currently the only platform with native MCP support, but expect others to follow as AI-agent workflows become standard in startup operations.

Open Source and Data Portability

After years of vendor lock-in complaints (particularly around Carta's data export limitations), founders are demanding transparency and portability. Open-source cap table software lets you audit the code, export your data freely, and avoid being held hostage by pricing increases.

Consolidation of Startup Tools

Cap table software is increasingly bundling with adjacent features — data rooms, board management, 409A valuations, and document generation. The trend favors platforms that handle the full equity lifecycle rather than point solutions.

Global Equity Support

As remote-first companies hire internationally, cap table platforms need to handle non-US equity structures — EMI options (UK), ESOP schemes (Australia), and cross-border tax implications. This is an area where most US-centric platforms still lag.

FAQ

What is the best free cap table software in 2027?

OpenCap Stack offers the most comprehensive free tier — including stakeholder management, SAFE modeling, vesting tracking, and dilution calculations. It's also open source, so there's no risk of the free tier being restricted in the future.

Is Carta still worth the price in 2027?

For late-stage companies (Series B+) that need bundled 409A valuations and Transfer Agent services, Carta remains a strong choice. For seed and Series A startups, the pricing is hard to justify when free alternatives like OpenCap Stack offer comparable features.

What is MCP and why does it matter for cap tables?

MCP (Model Context Protocol) is a standard that lets AI agents interact with software tools directly. For cap tables, this means you can ask an AI assistant to model a funding round, check an employee's vesting status, or generate a dilution report — all through natural language. OpenCap Stack is the first cap table platform with native MCP support.

Can I migrate from Carta to another platform?

Yes, though Carta's data export has historically been limited. Most platforms (including OpenCap Stack) offer migration tools. The key is exporting your stakeholder data, grant details, and convertible instruments — then validating everything matches your legal documents after import.

Should I use a spreadsheet instead of cap table software?

Only if you have 2 or fewer founders with no options, SAFEs, or investors. The moment you issue your first stock option or sign your first SAFE, the complexity exceeds what spreadsheets handle reliably. Errors in spreadsheet cap tables have killed acquisition deals and created tax liability for employees.

How much does cap table software cost in 2027?

Ranges from free (OpenCap Stack) to $3,000+/year (Carta) for startups, with enterprise platforms like Shareworks costing significantly more. Most seed-stage startups should expect to pay $0-1,000/year — or nothing if they choose an open-source solution.