How to Set Up a Startup Stock Option Plan (Equity Incentive Plan)

A startup equity incentive plan (often called a stock option plan or EIP) is the legal framework that authorizes the company to grant stock options, restricted stock, and other equity awards to employees, consultants, and advisors. Setting one up requires board approval, stockholder approval, a 409A valuation, and thoughtful decisions about pool size, option type, and vesting terms — all before you grant a single option.

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The Approval Process

Board Approval

The board of directors must formally adopt the equity incentive plan by resolution. This resolution approves the plan document itself, sets the initial share reserve (the maximum number of shares available for grants), and typically authorizes the officers to take all actions necessary to implement the plan.

For early-stage startups with a founder-only board, this is straightforward — a written consent of the board signed by the founders. For companies with investor directors, the plan adoption will typically be discussed at a board meeting and may require input from investors regarding pool size (since the option pool affects their ownership percentage).

Stockholder Approval

Delaware law and Section 422 of the Internal Revenue Code (for ISO eligibility) require stockholder approval of the plan. This approval must occur within 12 months before or after the board adopts the plan. For early-stage companies where founders hold all the common stock, this is usually a written consent of stockholders signed the same day as the board consent.

Stockholder approval matters for several reasons beyond legal compliance:

• ISO qualification. Without stockholder approval, no options granted under the plan qualify as ISOs. They default to NSOs, which have less favorable tax treatment for employees.
• California compliance. California requires stockholder approval for equity plans. Failure to obtain it can create securities law issues for California-based companies or companies with California employees.
• Future fundraising. Investors during due diligence will verify that the plan was properly approved. Missing stockholder consent is a common diligence finding that requires remediation.

Plan Reserve Sizing

The plan reserve — the number of shares set aside for equity awards — is one of the most strategically important decisions in cap table management. The pool directly impacts dilution for founders and investors.

Typical Pool Sizes

• At incorporation: 10–15% of fully diluted shares is standard for companies that haven't yet raised institutional capital
• At Series A: Investors typically require a 10–20% unallocated option pool post-money, meaning the dilution from the pool expansion comes out of the pre-money valuation (effectively from founders' ownership)
• Subsequent rounds: Each round may require a "top-up" of the pool, again coming from pre-money dilution

For detailed guidance on sizing strategy, see our deep dive on startup option pool sizing.

The Pre-Money Pool Shuffle

Understanding how the option pool interacts with fundraising is critical. When a VC sets a $10M pre-money valuation and requires a 15% post-money option pool, they're effectively requiring the founders to absorb that dilution before the investor's money comes in. The "effective" pre-money valuation to existing stockholders is lower. This dynamic is covered in detail in our equity dilution guide.

Avoiding Over-Allocation

Creating too large a pool dilutes founders unnecessarily. Creating too small a pool means you'll need board and stockholder approval to increase it — and if investors hold preferred stock with protective provisions, you'll need their consent too. The sweet spot is a pool that covers your hiring plan for 18–24 months with a modest buffer.

ISO vs. NSO: Understanding the Tax Implications

The plan authorizes two types of stock options, each with different tax consequences:

Incentive Stock Options (ISOs)

ISOs receive favorable tax treatment under Section 422 of the Internal Revenue Code:

• No ordinary income tax at exercise. When an employee exercises an ISO, no regular income tax is due (though AMT may apply — see below).
• Capital gains at sale. If the employee holds the shares for at least 2 years from grant and 1 year from exercise, the entire gain is taxed as long-term capital gains (currently 20% max federal rate vs. up to 37% for ordinary income).
• QSBS eligibility. Shares acquired through ISO exercise can qualify for Section 1202 QSBS exclusion, potentially eliminating up to $10M in federal capital gains tax.

ISO restrictions:

• Only available to W-2 employees (not contractors or advisors)
• The $100K annual limit: The aggregate fair market value (determined at grant date) of shares that become exercisable for the first time in any calendar year cannot exceed $100,000. Amounts exceeding this limit are automatically treated as NSOs. With standard four-year vesting, this means the maximum ISO-eligible grant at a given 409A value is $400K worth of shares (since $100K vests each year).
• Must be exercised within 90 days of employment termination (or they convert to NSOs)
• Must be exercised within 10 years of grant
• Strike price must be at or above FMV on the grant date

AMT trap: While ISOs avoid regular income tax at exercise, the spread (FMV minus exercise price) is an AMT preference item. Employees exercising large ISO grants when the FMV has increased significantly may owe substantial AMT. This is a major consideration for employees evaluating option exercise strategies.

Non-Qualified Stock Options (NSOs)

NSOs have simpler but less favorable tax treatment:

• Ordinary income at exercise. The spread between FMV and exercise price is taxable as ordinary income at exercise, and the company must withhold income and employment taxes.
• Capital gains on subsequent appreciation. Any gain above the FMV at exercise is capital gains when shares are sold.
• No eligibility restrictions. NSOs can be granted to employees, contractors, advisors, and board members.
• No $100K limit.

Practical Allocation Strategy

Most startup plans authorize both ISOs and NSOs, with the following allocation approach:

• Employees: Grant ISOs up to the $100K annual limit; any excess is automatically treated as NSOs
• Contractors and advisors: NSOs only (ISOs are legally unavailable)
• Board members: NSOs
• Departing employees: ISOs that aren't exercised within 90 days convert to NSOs (some companies extend this to 1–2 years post-termination via an "extended exercise window," but this converts ISOs to NSOs on day 91)

For a detailed analysis of what happens to equity when employees leave, see our equity when employees leave guide.

409A Valuation: Setting the Strike Price

Every option grant must have an exercise price at or above the stock's fair market value (FMV) on the grant date. Section 409A of the Internal Revenue Code imposes severe penalties — 20% additional tax plus interest — on options granted below FMV.

Startups establish FMV through a 409A valuation, typically conducted by a third-party valuation firm. Key timing considerations:

• Get your first 409A before granting any options. Grants made without a 409A valuation are risky. While early-stage companies sometimes rely on "good faith" valuations, a third-party 409A is the safe harbor.
• 409A valuations are valid for 12 months unless a material event occurs (fundraising, significant revenue change, acquisition offer). After a priced round, you need a new 409A.
• Budget $1,000–$5,000 for early-stage 409A valuations. Carta and similar platforms offer bundled pricing. Don't skip this to save money — the 409A penalty exposure dwarfs the cost.

Standard Vesting Terms

The equity incentive plan itself doesn't mandate vesting — individual grant agreements set vesting terms. However, establishing company-standard vesting terms simplifies administration and sets employee expectations:

Four-Year Vesting with One-Year Cliff

The overwhelming industry standard:

• One-year cliff: No shares vest until the first anniversary of the vesting start date, at which point 25% vests immediately
• Monthly vesting: After the cliff, shares vest monthly over the remaining 36 months (1/48th of the total grant per month)
• Total vesting period: 4 years

This structure protects the company from granting equity to employees who leave quickly. An employee who departs at month 11 receives nothing. An employee who departs at month 13 has vested slightly more than 25%.

Variations

• Advisor grants: Typically vest over 1–2 years with monthly or quarterly vesting and no cliff (see advisor equity)
• Executive grants: Sometimes include acceleration provisions (single or double trigger) tied to acquisition events
• Founder grants: Subject to separate founder vesting considerations, often with longer histories and different structures

Plan Administration

Self-Administration

Very early-stage companies (pre-funding, 1–5 option holders) can administer the plan manually using spreadsheet tracking and lawyer-drafted grant agreements. This works temporarily but becomes error-prone as the company grows.

Risks of self-administration:

• Missing grant dates or vesting calculations
• Failing to track exercises and 83(b) elections
• Producing inaccurate cap tables for fundraising
• Compliance gaps in Section 409A documentation

Platform Administration (Carta, Pulley, AngelList Stack)

Most companies transition to a cap table management platform before or at their seed round. These platforms:

• Automate grant issuance and e-signatures
• Track vesting schedules automatically
• Manage 409A valuations (some offer integrated valuation services)
• Generate board approval documents
• Handle option exercise processing
• Produce accurate cap tables for diligence

The cost is typically $3,000–$10,000 annually depending on company size and features. This is a worthwhile investment that pays for itself in administrative time savings and reduced error risk.

Evergreen and Auto-Increase Provisions

Some equity incentive plans include an "evergreen" or automatic annual increase provision that automatically adds shares to the plan reserve each year — typically 4–5% of the fully diluted shares outstanding, calculated on January 1 of each year.

Pros

• Avoids the need for annual stockholder approval to increase the pool
• Ensures the company always has shares available for new hires
• Simplifies budgeting for equity compensation

Cons

• Can result in excessive dilution if not monitored
• Investors may resist because it dilutes their ownership annually without a vote
• The automatic nature means the pool grows even if the company doesn't need additional shares

Evergreen provisions are more common in later-stage and public companies. At the seed and Series A stage, investors typically prefer to negotiate pool size at each financing round rather than authorize automatic increases.

When to Use RSUs Instead of Options

Restricted Stock Units (RSUs) are an alternative equity vehicle that some later-stage startups use instead of or alongside options:

When Options Are Better (Most Startups)

• Low 409A value. When the strike price is low (early stage), options provide maximum upside with minimal exercise cost. An employee paying $0.10/share for stock potentially worth $10/share gets enormous leverage.
• ISO tax benefits. RSUs can't qualify as ISOs, so they don't offer the favorable capital gains treatment.
• No immediate tax liability. Options create no tax event at grant. RSUs trigger ordinary income tax at vesting (when shares are delivered), which is problematic at private companies where employees can't sell shares to cover the tax.

When RSUs Make Sense

• High 409A value. When the 409A price is high (post-Series B or later), the exercise cost of options becomes substantial, and the potential upside as a multiple of the exercise price diminishes. RSUs have zero cost to the employee.
• Pre-IPO companies. Companies within 1–2 years of IPO often switch to RSUs, sometimes with "double trigger" vesting (time-based vesting plus a liquidity event) to defer the tax obligation until shares are liquid.
• Retention grants. RSUs with time-based vesting provide guaranteed value (unlike options, which can be underwater), making them better retention tools in certain scenarios.

Common Setup Mistakes

1. Granting Options Before a 409A Valuation

This is the most common and potentially most expensive mistake. Options granted below FMV trigger 409A penalties for the recipient. Get your 409A done first — no exceptions.

2. Missing Stockholder Approval

Failure to obtain stockholder approval means ISOs don't qualify as ISOs. This is easy to fix retroactively at early-stage companies but creates diligence issues if discovered during a financing.

3. Undersizing the Pool

Creating a pool too small for your hiring plan means going back to the board and stockholders for an increase — and potentially giving investors leverage to renegotiate other terms.

4. Not Having a Standard Grant Framework

Without a standardized framework mapping equity grants to roles and levels, grants become ad hoc and inconsistent, creating internal equity problems and potential discrimination claims.

5. Ignoring State Securities Law

Option grants are securities issuances. Most states have exemptions for compensatory equity grants, but the requirements vary. California Rule 701 covers most situations, but companies with employees in multiple states need to verify compliance in each jurisdiction.

6. Overlooking International Employees

Granting options to employees in other countries introduces complex tax, securities, and employment law issues. Many countries don't recognize ISOs, have different tax treatment, and may require local regulatory filings. Consult with counsel experienced in international equity compensation before granting to non-U.S. employees.

7. Failing to Track the $100K ISO Limit

When an employee receives multiple ISO grants, or a single large grant with standard vesting, the $100K annual limit can be exceeded. The excess automatically converts to NSO treatment, which affects the employee's tax planning. Your cap table platform should track this automatically.

Setting up an equity incentive plan correctly from the beginning avoids costly remediation later. The plan is the foundation of your equity compensation strategy — invest the time and modest cost to do it right at inception.