Delaware C-Corp, SAFE notes, 83(b) elections, and every legal step founders skip (until it bites them).
Why Legal Setup Matters More Than You Think
Most founders treat legal as an afterthought. Then they try to raise a round and discover their cap table is a mess, they never filed an 83(b), or their co-founder technically owns nothing.
Get this right from day one. It takes a weekend. Fixing it later takes months and thousands of dollars.
> "The founders who move fastest on product are usually the ones who handled legal cleanly upfront. It removes friction from everything that comes after."
> Y Combinator, Startup School
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Step 1: Incorporate as a Delaware C-Corp
This is non-negotiable if you plan to raise venture capital.
Why Delaware?
- Investor expectation: 99% of VC-backed startups are Delaware C-Corps
- Business-friendly courts: The Court of Chancery specializes in corporate law
- Predictable legal precedent: Decades of case law means fewer surprises
- Standard documents: Every lawyer, accelerator, and investor uses Delaware templates
Why C-Corp (not LLC)?
- VCs cannot invest in LLCs (structurally incompatible with their fund terms)
- C-Corps have a single class of stock (clean cap table)
- Standard equity compensation (stock options, RSUs) only works with C-Corps
- If you raise on SAFEs or priced rounds, you need a C-Corp
How to Incorporate
| Method | Cost | Speed | Best For |
| --- | --- | --- | --- |
| Stripe Atlas | $500 | 1-2 days | Solo founders, speed |
| Clerky | $427 formation + $299 post-incorporation setup (or $819 lifetime package) | 1-3 days | YC founders, full legal stack |
| Firstbase | $399+ | 1-2 days | International founders |
| Lawyer | $2,000-5,000 | 1-2 weeks | Complex situations |
Our recommendation: Use Stripe Atlas or Clerky. Both are battle-tested by thousands of YC companies. Clerky is especially good because it generates all your formation documents in one clean package.
What You Get After Incorporating
- Certificate of Incorporation
- Bylaws
- Board consent
- Stock purchase agreements
- EIN (Employer Identification Number)
- Your company legally exists
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Step 2: File Your 83(b) Election (Critical)
This is the single most important tax filing for startup founders. You have exactly 30 days from receiving your stock to file it. Miss it and you cannot undo it.
What Is an 83(b) Election?
When you receive restricted stock (which vests over time), the IRS lets you choose when to pay taxes on it:
- Without 83(b): You pay taxes as your stock vests, based on the fair market value at each vesting date. If your company becomes worth $100M, you owe taxes on stock worth $100M, even though you can't sell it.
- With 83(b): You pay taxes upfront on the stock's current value. At incorporation, your shares are worth fractions of a penny. Tax bill: essentially $0.
How to File
1. Fill out the 83(b) election form (your incorporation service or lawyer provides this)
2. File it with the IRS within 30 days of your stock purchase. The deadline is hard, with no extensions. As of mid-2025 you can file online: sign into your IRS online account and submit Form 15620 electronically for immediate confirmation of receipt. Alternatively, mail it via certified mail with return receipt. Use one method, not both
3. Keep a copy for your records
4. Give a copy to your company
5. Attach a copy to your personal tax return that year
Common Mistakes
- Missing the 30-day deadline: There are no extensions. Period.
- Not mailing via certified mail: You need proof the IRS received it
- Forgetting to file for co-founders: Every founder with restricted stock needs to file separately
- Filing but not keeping proof: The IRS loses things. Keep your receipt.
> "I've seen founders lose hundreds of thousands of dollars because they forgot to file their 83(b). It's a 10-minute task that can save you more money than anything else you do in the first year."
> Startup attorney, Clerky
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Step 3: Set Up Your Cap Table
Your cap table tracks who owns what percentage of your company. Get this right from day one.
Founder Equity Split
- Equal splits are fine if you're starting together and committing equally
- Unequal splits should reflect meaningful differences in contribution, risk, or commitment
- Whatever you decide, put it in writing with a stock purchase agreement
Standard Vesting Schedule
- 4-year vesting with a 1-year cliff is the industry standard
- Cliff means: if a co-founder leaves before 12 months, they get nothing
- After the cliff, stock vests monthly over the remaining 36 months
- This protects everyone, especially you
Tools for Cap Table Management
- Carta: Industry standard, integrates with everything
- Pulley: YC-backed, founder-friendly, cheaper than Carta
- AngelList Equity: Only relevant if you're raising via AngelList RUVs; the standalone cap-table product is no longer offered to new customers
- Spreadsheet: Fine for the first few months, but switch to a real tool before raising
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Step 4: Understand SAFE Notes
If you're raising your first round, you're almost certainly using a SAFE (Simple Agreement for Future Equity).
What Is a SAFE?
A SAFE is a contract where an investor gives you money now in exchange for equity later (at your next priced round). No interest, no maturity date, no debt.
Created by Y Combinator in 2013, SAFEs replaced convertible notes as the standard early-stage fundraising instrument.
Key Terms You Need to Know
| Term | What It Means |
| --- | --- |
| Valuation Cap | Maximum valuation at which the SAFE converts to equity |
| Discount | Percentage discount on the next round's price (typically 10-20%) |
| MFN (Most Favored Nation) | If you give a later investor better terms, earlier investors get those terms too |
| Pro Rata Rights | Investor's right to maintain their ownership % in future rounds |
| Post-Money SAFE | The standard: cap includes all SAFE holders in the denominator |
Current Market Norms (2026)
- Pre-seed: roughly $8-15M post-money cap (Carta 2025 medians: $7.5M for SAFE rounds under $250K, $10M for $250K-$1M rounds, $15M for $1M-$2.5M rounds), sometimes uncapped with MFN
- Seed: typically $15-25M+ post-money cap (Carta median seed post-money reached ~$24M by late 2025)
- AI-native companies frequently command caps well above these medians
- Most SAFEs have no discount (just a cap)
- Post-money SAFEs are now standard (use the YC SAFE template)
Common Mistakes with SAFEs
- Raising too many SAFEs: Each one dilutes you. Track your dilution carefully
- Not understanding post-money math: With post-money SAFEs, each new SAFE directly dilutes existing shareholders
- Giving pro rata rights to everyone: Reserve this for lead investors
- Not using the standard YC template: Custom terms create friction and legal bills
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Step 5: IP Assignment
If any founder (or contractor) built anything before incorporating, you need to formally assign that intellectual property to the company.
Why This Matters
- Investors will ask for proof during due diligence
- Without assignment, a departing founder could claim they own the code/product
- Accelerators like YC require this as part of their application
What to Assign
- All code, designs, and product work
- Domain names and social media accounts
- Any patents or patent applications
- Trade secrets and proprietary processes
How to Do It
- Your incorporation documents (Clerky, Stripe Atlas) usually include an IP assignment template
- Each founder signs an Invention Assignment Agreement
- Contractors should sign a Contractor Agreement with IP assignment clause (not just an NDA)
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Step 6: Get Your Basic Legal Documents in Order
Must-Have Documents
- Certificate of Incorporation: Filed with Delaware
- Bylaws: Your company's operating rules
- Stock Purchase Agreements: For each founder
- 83(b) Elections: Filed with IRS (see Step 2)
- IP Assignment Agreements: For all founders and contractors
- Invention Assignment Agreement: Ongoing IP assignment for employees
- Board Consent: Initial board resolutions
Nice-to-Have Early On
- Advisor agreements with standard terms (0.25-1% equity, 2-year vesting)
- NDA template: Though many founders skip these for investor conversations
- Privacy policy and Terms of Service: Required if you have a live product
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Step 7: Register for Business in California
Even though you're incorporated in Delaware, if you're operating in San Francisco you need to:
1. Register as a foreign corporation in California: File a Statement and Designation by Foreign Corporation (Form S&DC-S/N) with the Secretary of State ($100 fee), attaching a Delaware Certificate of Good Standing; then file your first Statement of Information (Form SI-550) within 90 days of registering, and annually thereafter
2. Get a San Francisco business license: Register with the SF Treasurer's office
3. Register for state taxes: California Franchise Tax Board
4. Get a registered agent in Delaware. Services like Northwest Registered Agent cost ~$125/year
SF-Specific Considerations
- San Francisco has a gross receipts tax, but since Proposition M (passed Nov 2024, effective tax year 2025), businesses with $5 million or less in SF gross receipts are generally exempt and, with limited exceptions, don't even need to file the return. You still must register with the city and pay the annual business registration fee
- SF's old payroll expense tax was fully repealed effective January 1, 2021 (Prop F, 2020); the city's business tax is now based on gross receipts. You'll still handle normal federal and California payroll taxes (register with the EDD) once you hire employees
- You may need a home office permit if working from your apartment
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Recommended Legal Resources
When to Hire a Real Lawyer
- When you're doing a priced round (Series A+)
- When you have a complex co-founder situation
- When dealing with regulated industries (fintech, health, etc.)
- When you receive a term sheet from a VC
Don't over-lawyer the early days. Standard documents from Clerky or Stripe Atlas are perfectly fine for incorporation and pre-seed/seed fundraising.
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The Bottom Line
Legal setup is a weekend project, not a months-long ordeal. Here's the priority order:
1. Incorporate as a Delaware C-Corp (Day 1)
2. File your 83(b) election (Within 30 days, do it immediately)
3. Set up your cap table with proper vesting (Day 1-7)
4. Sign IP assignment agreements (Day 1-7)
5. Register in California (First month)
6. Understand SAFEs before you start fundraising
Get these basics right and you'll never have to think about them again. Skip them and they'll haunt your Series A due diligence.
> "Do the boring legal stuff now so you can focus on building. The founders who delay this always regret it."
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