How to Compare Startup Equity Offers

You got two startup job offers. One pays more salary, the other offers more equity. Which do you pick? Here's the framework for comparing startup offers — and a free tool that does the math for you.

Table of Contents

Why Most People Compare Offers Wrong

When startup employees compare job offers, they usually make one of two mistakes:

  1. They only compare salary. "Offer A pays $140K, Offer B pays $120K — obviously A is better." Not necessarily. If Offer B includes 0.5% equity in a company that 10xes, that equity alone could be worth $500K+.
  2. They compare option counts. "Offer A has 20,000 options and Offer B has 10,000." Raw option counts are meaningless without knowing the strike price, total shares outstanding, and company valuation.

The right approach is to compare total 4-year compensation — salary plus equity value — across multiple exit scenarios. That's the only way to make an informed decision.

The 7 Factors That Actually Matter

When you compare two startup equity offers, you need to look at all seven of these variables:

1. Base Salary

Startups typically pay 70-90% of market rate. A $140K offer at a startup might correspond to $160-180K at a big tech company. Don't just compare startup vs startup — compare against your opportunity cost.

2. Number of Options

The raw number of stock options granted. This number is meaningless on its own — it's only useful when combined with total shares outstanding.

3. Strike Price (Exercise Price)

What you'll pay per share when you exercise. Your options only have value if the company's share price exceeds this number. A $0.50 strike price vs a $5.00 strike price makes a huge difference.

4. Current FMV (409A Valuation)

The current fair market value per share. The difference between FMV and your strike price is your "spread" — the intrinsic value of each option right now.

5. Vesting Schedule

Almost all startup equity vests over 4 years with a 1-year cliff. But some offers have different terms — 3-year vesting, 6-month cliff, or even immediate vesting for senior hires. Shorter vesting = better for you.

6. Company Valuation

The company's most recent valuation (or post-money valuation from last funding round). This determines the current share price and is the baseline for calculating potential returns.

7. Shares Outstanding

Total number of shares the company has issued. This lets you calculate your ownership percentage:

Your Ownership % = Your Options ÷ Total Shares Outstanding × 100

Real Example: Offer A vs Offer B

Side-by-Side Comparison

FactorOffer A (Series A Fintech)Offer B (Seed Stage AI)
Base Salary$150,000$130,000
Options Granted20,00050,000
Strike Price$2.00$0.50
Current FMV$5.00$1.00
Vesting4yr / 1yr cliff4yr / 1yr cliff
Valuation$200M$20M
Shares Outstanding40M10M
Ownership %0.05%0.50%

At first glance, Offer A looks better — $20K more salary and the company is 10x more valuable. But let's do the math.

Calculating 4-Year Total Compensation

To make a fair comparison, calculate total comp over the full vesting period:

Offer A — Series A Fintech

Offer B — Seed Stage AI

Based on current value alone, Offer A wins by $100K. But current value tells you almost nothing about what the equity will actually be worth.

Exit Scenarios Change Everything

The real comparison happens when you model different exit scenarios. Startups are high-risk, high-reward — your equity is a bet on the company's future valuation.

Exit Scenario Comparison

Exit MultipleOffer A Equity ValueOffer B Equity ValueWinner
1x (no growth)$20,000$0Offer A
3x$280,000$500,000Offer B
5x$480,000$1,000,000Offer B
10x$980,000$2,250,000Offer B
20x$1,980,000$4,750,000Offer B

At a 3x exit, Offer B already pulls ahead. At 10x, it's worth more than double. Why? Because Offer B gives you 10x more ownership (0.50% vs 0.05%). Earlier-stage companies offer more equity precisely because the risk is higher.

Important: These are gross equity values before taxes. NSOs are taxed as ordinary income on the spread at exercise. ISOs held for the qualifying period get long-term capital gains rates. Factor in roughly 30-50% for taxes depending on your situation.

Red Flags to Watch For

When comparing offers, watch for these warning signs:

Free Equity Offer Comparison Tool

Want to skip the manual math? Our free Compare Equity Offers tool lets you input two offers side by side and instantly see:

Compare Your Offers Now

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Open Equity Offer Comparison Tool →

The Decision Framework

Here's the framework for choosing between offers:

  1. Calculate 4-year total comp at current valuation. This is your downside scenario. If the company doesn't grow, what do you walk away with?
  2. Calculate 4-year total comp at 5x exit. This is a moderate success scenario. At this point, which offer looks better?
  3. Calculate 4-year total comp at 10x exit. This is the "good outcome" scenario — the company does well but isn't a unicorn.
  4. Assess the probability. Be honest: which company is more likely to 5x? A Series A company with revenue and traction, or a pre-seed company with a great pitch?
  5. Factor in non-financial considerations. Team quality, role scope, learning potential, commute/remote, and culture all matter.
  6. Decide based on your risk tolerance. If you need certainty, lean toward higher salary + later-stage company. If you can afford risk, earlier-stage + more equity often wins.

The Short Version

If both companies are equally likely to succeed: the offer with higher ownership % usually wins at any exit above 2-3x.

If one company is clearly more established: weigh the probability of success. A 10% chance of $2M is worth the same as a 100% chance of $200K. Expected value is your friend.

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