---
# === IDENTITY ===
id: business/startup-legal/founder-agreement-essentials/2026
canonical_question: "What goes in a founder agreement — vesting (4yr/1yr cliff), IP assignment, roles, exit provisions, decision-making?"
aliases:
  - "Co-founder agreement template with vesting and IP assignment"
  - "How to draft a founders agreement for a startup"
  - "Founder equity split agreement with cliff vesting and buyout provisions"
entity_type: execution_recipe
domain: business > startup-legal > founder agreement essentials
region: global
jurisdiction: us
temporal_scope: 2024-2026

# === VERIFICATION ===
last_verified: 2026-03-11
confidence: 0.88
version: 1.0
first_published: 2026-03-11

# === TEMPORAL VALIDITY ===
temporal_validity:
  status: evolving
  last_breaking_change: "FTC non-compete ban (2024) invalidated most non-compete clauses nationwide; California, Colorado, Minnesota, Oklahoma already banned"
  next_review: 2026-09-07
  change_sensitivity: high

# === CONSTRAINTS ===
constraints:
  - "Founder agreements must be executed BEFORE any work begins or IP is created — retroactive assignment is weaker legally"
  - "All founders must sign IP assignment (PIIA/CIIA) as a separate document — investors will not fund without it"
  - "83(b) election must be filed with the IRS within 30 days of stock grant — missing this deadline is irreversible and costly"
  - "Non-compete enforceability varies by state — unenforceable in California, limited in many other states post-FTC rule"
  - "Vesting terms must be set before any institutional fundraise — investors require vesting as a condition to close"
  - "Legal review by a startup attorney is strongly recommended for agreements involving 3+ founders or complex IP situations"

# === SKIP CONDITIONS ===
skip_this_unit_if:
  - condition: "User needs to evaluate co-founder compatibility before drafting agreement"
    use_instead: "business/startup-readiness/co-founder-evaluation-framework/2026"
  - condition: "User already has a founder agreement and needs to modify equity split"
    use_instead: "Search knowledgelib.io for renegotiating founder equity splits — no dedicated unit yet"
  - condition: "User is a solo founder with no co-founders"
    use_instead: "business/startup/legal-formation-playbook/2026"

# === AGENT HINTS ===
inputs_needed:
  - key: founder_count
    question: "How many co-founders are involved?"
    type: choice
    options: ["2 founders", "3 founders", "4+ founders"]
  - key: ip_complexity
    question: "Has any founder created significant IP before incorporating?"
    type: choice
    options: ["no pre-existing IP", "some pre-existing IP to assign", "complex IP situation (prior employer claims, open source)"]
  - key: budget_for_legal
    question: "What is the budget for legal setup?"
    type: choice
    options: ["$0 — DIY with templates", "$500-800 — Clerky or Stripe Atlas", "$2,000-5,000 — startup attorney", "$5,000+ — full law firm engagement"]
  - key: incorporation_status
    question: "Has the company been incorporated yet?"
    type: choice
    options: ["not yet incorporated", "incorporated but no equity docs", "incorporated with basic equity docs"]

# === EXECUTION METADATA ===
execution:
  required_inputs:
    - name: "Co-founder evaluation results"
      source: "business/startup-readiness/co-founder-evaluation-framework/2026"
      format: "structured assessment"
    - name: "Agreed equity split percentages"
      source: "founder negotiation"
      format: "percentage allocation"
    - name: "Role and responsibility definitions"
      source: "founder negotiation"
      format: "text description per founder"
  outputs:
    - name: "Executed founder agreement package"
      format: "signed legal documents (PDF)"
      description: "Complete set of founder documents: stock purchase agreements with vesting, PIIA/CIIA, bylaws provisions, and any side agreements"
    - name: "83(b) election forms"
      format: "IRS form + certified mail receipt"
      description: "Filed 83(b) elections for each founder within 30-day deadline"
    - name: "Cap table"
      format: "spreadsheet or Carta/Pulley entry"
      description: "Authorized shares, issued shares per founder, vesting schedules, and cliff dates"
  tools_required:
    - name: "Clerky"
      purpose: "Formation documents, stock purchase agreements, PIIA templates"
      tier: paid
      cost: "$799 one-time (lifetime package)"
      alternatives: ["Stripe Atlas ($500)", "Cooley GO templates (free)", "startup attorney ($2K-5K)"]
    - name: "Cap table tool"
      purpose: "Track equity ownership, vesting schedules, option pools"
      tier: free
      cost: "$0 for early stage"
      alternatives: ["Carta", "Pulley", "Google Sheets"]
    - name: "Startup attorney"
      purpose: "Review and customize agreement for complex situations"
      tier: paid
      cost: "$2,000-5,000 for full founder agreement package"
      alternatives: ["Clerky templates (for standard situations)", "YC standard docs"]
  credentials_needed: []
  estimated_duration: "4-8 hours (DIY with templates) to 2-4 weeks (with attorney)"
  estimated_cost: "$500-800 (template platforms) to $2,000-5,000 (attorney-drafted)"

# === DISTRIBUTION ===
canonical_source: "https://knowledgelib.io/business/startup-legal/founder-agreement-essentials/2026"
suggested_citation: "Source: knowledgelib.io — AI Knowledge Library (verified 2026-03-11)"

# === RELATED UNITS ===
related_kos:
  depends_on:
    - id: "business/startup-readiness/co-founder-evaluation-framework/2026"
      label: "Co-founder compatibility assessment before formalizing agreement"
  feeds_into:
    - id: "business/startup-legal/cap-table-setup-guide/2026"
      label: "Cap table setup — initial equity split frameworks, option pool sizing (10-20% pre-Series A), common structures"
    - id: "business/market-entry/us-state-selection/2026"
      label: "Choosing the US state of incorporation after founder terms are agreed — Delaware vs Wyoming vs home state, franchise tax and nexus tradeoffs"
  related_to:
    - id: "business/startup-readiness/personal-financial-planning-for-founders/2026"
      label: "Financial planning context for vesting and runway decisions"
  alternative_to: []

# === SOURCES ===
sources:
  - id: src1
    title: "Founder's Stock, Vesting and Founder Departures"
    author: Cooley GO
    url: https://www.cooleygo.com/founder-basics-founders-stock/
    type: official_docs
    published: 2024-06-01
    reliability: authoritative
  - id: src2
    title: "Founders' Agreement Overview — Penn Startup Kit"
    author: University of Pennsylvania Law School
    url: https://www.law.upenn.edu/clinic/entrepreneurship/startupkit/founders-agreement.pdf
    type: academic
    published: 2023-01-01
    reliability: authoritative
  - id: src3
    title: "Pulling the Trigger(s): Single-Trigger and Double-Trigger Acceleration"
    author: Cooley GO
    url: https://www.cooleygo.com/what-are-single-and-double-trigger-acceleration-and-how-do-they-work/
    type: official_docs
    published: 2024-03-01
    reliability: authoritative
  - id: src4
    title: "Formation — Legal Concepts for Founders"
    author: Clerky
    url: https://handbooks.clerky.com/legal-concepts/formation
    type: official_docs
    published: 2025-01-01
    reliability: authoritative
  - id: src5
    title: "How to Create the Perfect Cofounder Agreement"
    author: Founder Institute
    url: https://fi.co/insight/how-to-create-the-perfect-cofounder-agreement-with-your-business-partner
    type: technical_blog
    published: 2024-08-01
    reliability: high
  - id: src6
    title: "Key Strategies for Resolving Founder Deadlocks"
    author: CGL LLP
    url: https://cgl-llp.com/insights/key-strategies-for-resolving-founder-deadlocks/
    type: technical_blog
    published: 2024-11-01
    reliability: high
  - id: src7
    title: "The ABCs of CIIAAs: Protecting Employee-Generated IP"
    author: Cooley GO
    url: https://www.cooleygo.com/protecting-employee-generated-intellectual-property/
    type: official_docs
    published: 2024-05-01
    reliability: authoritative
  - id: src8
    title: "Founder Agreement Template with Vesting (2025)"
    author: Promise Legal
    url: https://www.promise.legal/templates/founder-agreement
    type: technical_blog
    published: 2025-01-01
    reliability: high
---

# Founder Agreement Essentials

## Purpose

This recipe produces a complete, executed founder agreement package covering the six critical components every startup needs before writing code or raising money: equity split with vesting, IP assignment, roles and responsibilities, exit and buyout provisions, decision-making and deadlock resolution, and restrictive covenants. The output is a set of signed legal documents that protect all founders, satisfy investor due diligence requirements, and prevent the most common co-founder disputes that kill startups. [src1]

## Prerequisites

- [ ] **Co-founder evaluation completed** — all founders have assessed compatibility and agreed to proceed together — [Co-Founder Evaluation Framework](/business/startup-readiness/co-founder-evaluation-framework/2026)
- [ ] **Equity split agreed in principle** — founders have discussed and tentatively agreed on ownership percentages based on contributions (capital, IP, time, skills)
- [ ] **Role definitions drafted** — each founder's title, responsibilities, and decision authority scoped at least informally
- [ ] **Incorporation entity chosen** — Delaware C-Corp is standard for VC-track startups; LLC for bootstrapped ventures [src4]
- [ ] **Legal budget determined** — $500-800 for template platforms or $2,000-5,000 for attorney-drafted documents

## Constraints

- All founders must sign IP assignment (PIIA/CIIA) before any work begins. Retroactive assignment is legally weaker and investors will flag it during due diligence. [src7]
- The 83(b) election must be filed with the IRS within 30 calendar days of the stock grant date. Missing this deadline cannot be corrected and results in substantially higher tax liability as shares vest. [src1]
- Non-compete clauses are unenforceable in California and increasingly restricted nationwide after the FTC's 2024 rule. Rely on non-solicitation and confidentiality provisions instead. [src8]
- Vesting schedules must be in place before any institutional investment. Investors will require vesting as a closing condition, and retrofitting vesting onto already-issued shares is more complex and expensive. [src1]
- In US startups, the provisions typically handled by a single "founders agreement" in other jurisdictions are distributed across multiple documents: stock purchase agreements, PIIA/CIIA, company bylaws, and state corporate law. [src4]

## Tool Selection Decision

```
Which path?
├── Founders have standard 2-3 person C-Corp, VC-track
│   └── PATH A: Template Platform — Clerky ($799) or Stripe Atlas ($500)
├── Founders have complex IP, 3+ founders, or non-standard terms
│   └── PATH B: Attorney-Drafted — startup law firm ($2K-5K)
├── Founders are bootstrapping, cost-sensitive, simple structure
│   └── PATH C: DIY with Free Templates — Cooley GO + YC docs ($0)
└── Founders are outside the US
    └── PATH D: Local Attorney — jurisdiction-specific counsel (varies)
```

| Path | Tools | Cost | Speed | Legal Quality |
|------|-------|------|-------|---------------|
| A: Template Platform | Clerky or Stripe Atlas | $500-799 | 1-3 days | High (YC/Cooley vetted) |
| B: Attorney-Drafted | Startup law firm | $2,000-5,000 | 2-4 weeks | Highest (custom) |
| C: DIY Free Templates | Cooley GO, YC docs, Penn Law | $0 | 1-2 days | Moderate (generic) |
| D: Local Attorney | Jurisdiction-specific counsel | Varies | 2-6 weeks | Jurisdiction-appropriate |

## Execution Flow

### Step 1: Negotiate and Document Equity Split

**Duration**: 1-3 hours (conversation) + 30 minutes (documentation)
**Tool**: Spreadsheet + cap table tool

Agree on the equity split before touching any legal documents. This is the hardest conversation and must happen first. [src5]

```
Equity Split Worksheet:
─────────────────────────────────────────────
Factor               Founder A    Founder B    Weight
Idea origination:    ____%        ____%        10%
Domain expertise:    ____%        ____%        20%
Technical ability:   ____%        ____%        20%
Full-time commitment:____%        ____%        20%
Capital contributed: ____%        ____%        15%
Network/connections: ____%        ____%        15%
─────────────────────────────────────────────
WEIGHTED TOTAL:      ____%        ____%

Negotiation rules:
- Equal splits (50/50) are fine IF both founders contribute equally
- Unequal splits should reflect genuine differences in contribution
- Reserve 10-20% for employee option pool (standard: 10% at formation)
- All percentages are PRE-DILUTION and will decrease with fundraising

Common splits for 2 founders:
  50/50 — equal contribution, most common
  60/40 — one founder has significant extra contribution
  70/30 — large asymmetry (CEO + idea + capital vs. late-joining CTO)
```

**Verify**: Both founders can articulate why the split is fair. If either feels resentment, renegotiate now — resentment compounds.
**If failed**: If founders cannot agree on equity, revisit the co-founder evaluation. Equity disagreement at this stage is a strong signal of misalignment.

### Step 2: Define Vesting Schedule and Cliff

**Duration**: 30 minutes
**Tool**: Cap table tool or spreadsheet

Apply the standard 4-year vesting with 1-year cliff to all founder shares. This protects against early departure. [src1]

```
Standard Founder Vesting Terms:
─────────────────────────────────────────────
Total vesting period:     4 years
Cliff period:             1 year
Vesting after cliff:      25% (at month 12)
Remaining vesting:        Monthly over 36 months (2.08%/month)
Vesting commencement:     Date of incorporation (or earlier start date)

Example — Founder with 50% equity (5,000,000 shares of 10,000,000):
  Month 0-11:   0 shares vested (cliff period)
  Month 12:     1,250,000 shares vest (25%)
  Month 13-48:  ~104,167 shares/month
  Month 48:     5,000,000 shares fully vested

Repurchase right: Company may repurchase unvested shares
at the LOWER of original cost or current FMV if founder
departs before full vesting. [src1]

Acceleration provisions:
  Single-trigger: ALL shares vest on change of control (acquisition)
    — Rare, investors dislike — reduces retention incentive [src3]
  Double-trigger: Shares accelerate ONLY if (1) change of control
    AND (2) founder terminated without cause or resigns for good reason
    — Market standard, preferred by investors and acquirers [src3]

Recommended: Double-trigger acceleration for 50-100% of unvested shares.
```

**Verify**: Vesting schedule is documented with exact dates, share counts, and cliff date. Each founder's vesting commencement date accounts for any pre-incorporation work period.
**If failed**: If founders resist vesting, explain that investors universally require it. A startup without founder vesting will not raise institutional capital.

### Step 3: Draft IP Assignment (PIIA/CIIA)

**Duration**: 1-2 hours
**Tool**: Clerky template, Cooley GO template, or attorney

Every founder must assign all startup-related IP to the company. This is non-negotiable for investor due diligence. [src7]

```
IP Assignment Checklist:
─────────────────────────────────────────────
PIIA/CIIA must cover:
  [ ] Assignment of all inventions created during service
  [ ] Assignment of pre-existing IP contributed to the startup
      (list on Schedule A — be specific)
  [ ] Confidentiality obligations (during and after service)
  [ ] Non-solicitation of employees (12-24 months post-departure)
  [ ] Return of company materials upon departure

Separate Technology Assignment Agreement (TAA) if needed:
  [ ] Backward-looking: covers IP developed BEFORE incorporation
  [ ] Lists specific pre-existing IP being assigned
  [ ] Excludes any IP the founder wants to retain (list on Schedule B)

State-specific considerations:
  California: Cannot assign inventions made entirely on own time
              with own resources unrelated to company business
  Many states: Similar carve-outs exist — check local law

Document structure (US standard):
  1. Stock Purchase Agreement (includes vesting + repurchase)
  2. PIIA/CIIA (IP assignment + confidentiality)
  3. TAA if pre-existing IP exists
  4. Board consent resolutions
```

**Verify**: Every founder has signed the PIIA/CIIA. All pre-existing IP that will be used in the startup is listed on Schedule A and formally assigned. Any excluded personal IP is listed on Schedule B.
**If failed**: If a founder has prior employer IP claims or open-source entanglements, engage a startup attorney before proceeding.

### Step 4: Define Roles, Decision-Making, and Deadlock Resolution

**Duration**: 1-2 hours
**Tool**: Written document (part of bylaws or operating agreement)

Define who decides what, and what happens when founders disagree. [src6]

```
Decision Authority Matrix:
─────────────────────────────────────────────
Decision Type              Authority           Threshold
Operational (<$10K):       CEO unilateral      No vote needed
Operational ($10K-$50K):   CEO + 1 co-founder  Majority
Strategic / hiring / pivot:Board vote           Majority
Equity changes / fundraise:Board vote           Unanimous
Dissolution / sale:        Board vote           Unanimous (or supermajority)
Compensation changes:      Board vote           Majority (conflicted founder abstains)

Role Assignments:
  Founder A: CEO — business strategy, fundraising, BD
  Founder B: CTO — product, engineering, technical hiring
  [Founder C: COO — operations, finance, legal]

Deadlock Resolution (for 50/50 splits):
  Step 1: Good-faith negotiation (7 days)
  Step 2: Mediation by mutually agreed neutral (14 days)
  Step 3: Advisory board vote (if established)
  Step 4: Buy-sell provision (Texas Shootout or Russian Roulette):
          One founder names a price per share; other founder
          must either buy at that price or sell at that price [src6]
  Step 5: Binding arbitration (last resort)

Timeline: Each step has a defined deadline to prevent indefinite stalemate.
```

**Verify**: Decision matrix covers at least: spending authority, hiring/firing, equity issuance, pivoting, and dissolution. Deadlock mechanism has defined timelines and escalation path.
**If failed**: If founders cannot agree on decision-making authority, this is a serious compatibility red flag. Revisit co-founder evaluation.

### Step 5: Establish Exit and Buyout Provisions

**Duration**: 1 hour
**Tool**: Written provisions in stock purchase agreement

Define what happens when a founder leaves — voluntarily, involuntarily, for cause, or due to death/disability. [src2]

```
Departure Scenarios and Outcomes:
─────────────────────────────────────────────
VOLUNTARY DEPARTURE (founder quits):
  Vested shares:   Founder keeps
  Unvested shares: Company repurchases at lower of cost or FMV
  IP:              Remains with company (per PIIA)
  Non-solicit:     12-24 months (employees and customers)
  Board seat:      Forfeited upon departure

TERMINATION FOR CAUSE (fraud, breach, felony):
  Vested shares:   Company has right of first refusal at FMV
  Unvested shares: Forfeited (repurchased at original cost)
  Acceleration:    None
  Additional:      May trigger clawback provisions

TERMINATION WITHOUT CAUSE (voted out by board):
  Vested shares:   Founder keeps
  Unvested shares: Negotiate — commonly 6-12 months acceleration
  Severance:       Optional — 3-6 months common
  Board observer:  Optional for major shareholders

DEATH OR DISABILITY:
  Vested shares:   Transfer to estate/heirs
  Unvested shares: Commonly 12 months acceleration
  Company option:  Right to repurchase from estate at FMV
  Key-person insurance: Recommended ($1-2M per founder)

ACQUISITION (change of control):
  Double-trigger:  If terminated within 12-18 months post-acquisition,
                   50-100% of unvested shares accelerate [src3]
  Escrow:          Typically 10-20% of proceeds held 12-18 months
  Earn-out:        May require 2-4 years of continued service

Right of First Refusal (ROFR):
  All share transfers require company + other founders to have
  first option to purchase at same terms as proposed third-party buyer.
```

**Verify**: All four departure scenarios (voluntary, for cause, without cause, death/disability) have defined terms. Right of first refusal is included for any share transfers.
**If failed**: If founders disagree on exit terms, focus on the voluntary departure scenario first — it is the most common and sets the baseline.

### Step 6: Execute Documents and File 83(b) Elections

**Duration**: 1-3 hours (signing) + 1 hour (83(b) filing)
**Tool**: Clerky, DocuSign, or attorney + certified mail for 83(b)

Sign all documents and immediately file 83(b) elections. The 30-day deadline is absolute. [src1]

```
Execution Checklist:
─────────────────────────────────────────────
DOCUMENTS TO SIGN (all founders):
  [ ] Stock Purchase Agreement (includes vesting, repurchase rights)
  [ ] PIIA / CIIA (IP assignment + confidentiality)
  [ ] TAA (if pre-existing IP needs assignment)
  [ ] Board consent resolutions (authorizing share issuance)
  [ ] Bylaws (or operating agreement for LLCs)

83(b) ELECTION — CRITICAL 30-DAY DEADLINE:
  What: Elects to pay tax on stock value at grant date (near $0)
        instead of at vesting (potentially worth much more)
  Deadline: 30 calendar days from stock grant date — NO EXTENSIONS
  How to file:
    1. Complete IRS 83(b) election form (one per founder)
    2. Send to IRS via certified mail, return receipt requested
       IRS address: based on founder's state of residence
    3. Keep copy of signed form + certified mail receipt
    4. Attach copy to that year's personal tax return
    5. Send copy to company for corporate records

  Cost of missing deadline: If startup succeeds, tax on potentially
  millions of dollars of paper gains as shares vest — instead of
  tax on near-zero initial value.

CAP TABLE UPDATE:
  [ ] Record all issued shares in cap table tool
  [ ] Document vesting commencement dates
  [ ] Set calendar reminders for cliff dates
  [ ] Note option pool reserve (10-20% standard)

STORAGE:
  [ ] Signed originals in company records (physical or secure digital)
  [ ] Each founder retains personal copies
  [ ] Attorney retains copies (if applicable)
```

**Verify**: All documents signed by all founders. 83(b) elections sent via certified mail within 30 days. Certified mail tracking number recorded. Cap table reflects issued shares and vesting schedules.
**If failed**: If 83(b) deadline is approaching, prioritize filing above all other steps. File first, then complete remaining documents.

## Output Schema

```json
{
  "output_type": "founder_agreement_package",
  "format": "PDF + spreadsheet",
  "columns": [
    {"name": "document_type", "type": "string", "description": "Type of legal document (Stock Purchase Agreement, PIIA, TAA, Bylaws, 83(b))", "required": true},
    {"name": "status", "type": "string", "description": "Execution status: draft, reviewed, signed, filed", "required": true},
    {"name": "founders_signed", "type": "string", "description": "Comma-separated list of founders who have signed", "required": true},
    {"name": "deadline", "type": "date", "description": "Filing or execution deadline if applicable", "required": false},
    {"name": "filed_date", "type": "date", "description": "Date document was filed (for 83(b) and incorporation)", "required": false},
    {"name": "tracking_number", "type": "string", "description": "Certified mail tracking for 83(b) filing", "required": false}
  ],
  "expected_row_count": "5-8",
  "sort_order": "deadline ascending",
  "deduplication_key": "document_type"
}
```

## Quality Benchmarks

| Quality Metric | Minimum Acceptable | Good | Excellent |
|---------------|-------------------|------|-----------|
| Document completeness | Stock purchase + PIIA signed | All 5 core docs executed | Full package + attorney review |
| Vesting coverage | All founders have vesting | Vesting + acceleration terms | Vesting + acceleration + departure scenarios |
| IP assignment | Basic PIIA signed | PIIA + pre-existing IP scheduled | PIIA + TAA + freedom-to-operate check |
| 83(b) filing | Filed within 30 days | Filed within 14 days + receipt | Filed within 7 days + copy to attorney + tax return |
| Decision framework | Informal role agreement | Written decision matrix | Matrix + deadlock resolution + escalation timelines |

**If below minimum**: Do not proceed with product development or fundraising until at least stock purchase agreements and PIIA are executed. Investors will not fund a company without these documents.

## Error Handling

| Error | Likely Cause | Recovery Action |
|-------|-------------|----------------|
| Founders cannot agree on equity split | Misaligned expectations about contribution value | Use structured framework (Step 1 worksheet). Consider dynamic equity (Slicing Pie) for very early stage. |
| Pre-existing IP has prior employer claims | Founder created related IP at previous job | Engage IP attorney. Review prior employment agreements. May need clean-room development strategy. |
| 83(b) deadline missed | Administrative delay or ignorance of requirement | Cannot be fixed retroactively. Consult tax attorney to understand liability. Future vesting events will be taxable. |
| Founder refuses to sign PIIA | Concerns about broad IP assignment scope | Narrow the assignment scope. Add Schedule B for excluded personal projects. Attorney can draft custom carve-outs. |
| State-specific non-compete issues | Included non-compete clause in a state where unenforceable | Remove non-compete. Rely on non-solicitation + confidentiality provisions. Review enforceability state-by-state. |
| Deadlock in 50/50 structure | No tiebreaker mechanism included | Add advisory board tiebreaker, mediator clause, or buy-sell provision retroactively as board resolution or amendment. |

## Cost Breakdown

| Component | Free Tier | Paid Tier | At Scale |
|-----------|-----------|-----------|----------|
| Formation + equity docs | Cooley GO templates ($0) | Clerky ($799) / Stripe Atlas ($500) | Startup law firm ($2K-5K) |
| PIIA/CIIA template | Free templates (Cooley GO) | Included in Clerky | Attorney-customized ($500-1K) |
| Attorney review | N/A | 1-hour review ($500-1K) | Full drafting ($3K-5K) |
| Cap table setup | Google Sheets ($0) | Pulley free tier ($0) | Carta ($0-1K/year) |
| 83(b) filing | Certified mail ($8-15) | Same | Same |
| **Total for 2-founder startup** | **$8-15** | **$500-1,800** | **$3,000-7,000** |

## Anti-Patterns

### Wrong: Handshake agreement with no written documents
Many co-founders start building on verbal agreements, assuming they will "figure out the legal stuff later." When the startup gains traction, misaligned memories of verbal promises cause disputes that destroy companies. Investors will refuse to fund any startup without documented founder agreements. [src2]

### Correct: Execute written agreements before writing a single line of code
Draft and sign at minimum: stock purchase agreement with vesting, PIIA, and a written role/decision framework. Use Clerky or free Cooley GO templates if budget is limited.

### Wrong: Equal 50/50 split without vesting
Two founders split equity 50/50 with immediate full ownership, no vesting. One founder leaves after 6 months with half the company, contributing nothing further. The remaining founder is left building a company where half the equity is permanently allocated to someone who left. [src1]

### Correct: All equity subject to 4-year vesting with 1-year cliff
Even 50/50 splits are fine — provided both founders vest. If a founder leaves in month 6, they forfeit all shares (cliff not met). If they leave in month 18, they keep 37.5% of their allocation. The company can repurchase the rest.

### Wrong: No IP assignment signed before work begins
Founders build a product for 12 months, then realize no one ever formally assigned IP to the company. During fundraising, investors discover the gap. At best, it causes expensive retroactive legal work. At worst, a departed founder claims ownership of critical IP. [src7]

### Correct: Sign PIIA/CIIA and TAA at incorporation, before any code or content creation
Make IP assignment part of the incorporation checklist, not an afterthought. Clerky and Stripe Atlas include these documents in their standard formation packages.

## When This Matters

Use this recipe when co-founders have decided to work together and need to formalize their relationship before building the product or raising money. It produces the foundational legal documents that protect all parties and satisfy investor requirements. This recipe should be executed after co-founder evaluation is complete and before any product development, fundraising, or customer-facing activity begins.

## Related Units

- [Co-Founder Evaluation Framework](/business/startup-readiness/co-founder-evaluation-framework/2026) — prerequisite: assess compatibility before formalizing
- [Startup Incorporation State Selection](/business/startup-legal/startup-incorporation-state-selection/2026) — choosing the right state (Delaware vs. home state)
- [Personal Financial Planning for Founders](/business/startup-readiness/personal-financial-planning-for-founders/2026) — financial context for vesting and runway decisions
- [Startup Cap Table Setup](/business/startup-finance/startup-cap-table-setup/2026) — next step: formalize cap table with agreed terms
- [Startup Idea Structuring Template](/business/startup-planning/startup-idea-structuring-template/2026) — parallel step: validate the idea while legal setup proceeds