Startup Equity Explained: What Engineers Need to Know

Equity compensation can be worth millions—or nothing. Yet most engineers don't understand it well enough to evaluate offers or negotiate effectively.

Let's fix that. Here's what every engineer needs to know about startup equity.

What is Startup Equity?

Equity means you own a piece of the company. As the company becomes more valuable, so does your ownership stake. But the details matter enormously.

Types of Equity Compensation

**Stock Options (ISOs and NSOs)**

**Restricted Stock Units (RSUs)**

**Direct Stock Grants**

Understanding Your Equity Offer

When you get an equity offer, you need to know:

1. Number of Shares

"10,000 shares" is meaningless without context. Always ask:

**Example:**

The percentage is what matters.

2. Type of Equity

Options, RSUs, or direct stock? Each has different tax implications and value.

3. Vesting Schedule

Standard is **4 years with a 1-year cliff**:

Some companies offer faster vesting or no cliff—this is more employee-friendly.

4. Exercise Price (for options)

The price you pay to buy your shares. Lower is better.

Also called the "strike price" or "grant price."

5. Current Valuation

What's the company worth today? This determines your equity's current paper value.

**Formula:**

Your percentage × Company valuation = Paper value

**Example:**

0.1% × $100M valuation = $100,000

6. Expiration Terms

Most stock options expire 90 days after you leave. This means:

Some companies offer 10-year exercise windows—much better for employees.

Evaluating Equity Value

Your equity is only valuable if the company succeeds. Here's how to think about it:

Early-Stage Startups (Seed to Series A)

**High risk, high potential reward**

**What to look for:**

**Typical equity:** 0.1% - 1.0% for senior engineers

Growth Stage (Series B-C)

**Medium risk, medium reward**

**What to look for:**

**Typical equity:** 0.05% - 0.5% for senior engineers

Late Stage (Series D+)

**Lower risk, lower reward**

**What to look for:**

**Typical equity:** 0.01% - 0.2% for senior engineers

Tax Implications

Equity compensation has complex tax implications:

Stock Options (ISOs)

**At grant:** No taxes

**At exercise:** Potential Alternative Minimum Tax (AMT)

**At sale:** Capital gains tax (long-term if held 1+ year after exercise and 2+ years after grant)

Stock Options (NSOs)

**At grant:** No taxes

**At exercise:** Ordinary income tax on the difference between exercise price and fair market value

**At sale:** Capital gains tax on gains since exercise

RSUs

**At grant:** No taxes

**At vest:** Ordinary income tax on full value

**At sale:** Capital gains tax on gains since vesting

**Important:** Talk to a tax professional. Equity taxes can be complicated and costly if mishandled.

Red Flags in Equity Offers

Be cautious if:

Negotiating Equity

Yes, you can negotiate! Here's how:

1. Know the Ranges

Research typical equity ranges for your role and stage:

2. Negotiate the Percentage

Focus on ownership percentage, not share count. Share counts change with funding rounds, but your percentage is what matters.

3. Consider the Whole Package

Don't optimize for just equity or just salary. Consider:

4. Ask About Refresh Grants

Many companies provide additional equity grants after you join. Ask about:

Common Mistakes Engineers Make

Mistake 1: Ignoring Equity

"I only care about salary" means leaving potentially life-changing money on the table.

Mistake 2: Overvaluing Early-Stage Equity

Don't treat equity at a seed startup like cash. It's a lottery ticket.

Mistake 3: Not Exercising Options

If you leave and don't exercise, you lose your equity. Consider:

Mistake 4: Joining Without Due Diligence

Research the company thoroughly:

Example Scenarios

Scenario 1: Early-Stage Offer

**Offer:** $150K salary + 0.5% equity

**Company:** Series A, $20M valuation

**Analysis:**

**Decision:** If you believe in the mission and team, and can afford the salary, this could be worth it.

Scenario 2: Late-Stage Offer

**Offer:** $180K salary + $100K RSUs/year

**Company:** Series D, planning IPO in 12-18 months

**Analysis:**

**Decision:** Lower risk, but also lower potential upside than early-stage.

Questions to Ask About Equity

Before accepting any offer:

1. What percentage of the company does this represent?

2. What's the total fully diluted share count?

3. What's the current 409A valuation?

4. What's the vesting schedule and cliff?

5. For options: What's the exercise price?

6. How long do I have to exercise after leaving?

7. What was the last fundraise valuation?

8. What's the planned exit timeline?

9. Are there any liquidation preferences I should know about?

10. Can you provide an example exit scenario showing my payout?

Final Thoughts

Equity compensation is complex, but understanding it is crucial for your financial future. Don't be shy about asking questions—good companies want employees to understand their compensation.

Remember:

Need help evaluating a startup equity offer? Forecareer can connect you with companies offering competitive equity packages and help you understand what's market rate for your level.