Sweat Equity Tax Comparison Calculator

Q: Can I use ISOs in an LLC?

No. ISOs are only available for C-Corporations under IRC Section 422.

Q: What is a profits interest and how is it taxed?

A profits interest shares in future profits only. No tax at grant if properly structured; distributions as ordinary income; sale as LTCG.

Q: What is phantom equity?

Phantom equity gives economic benefit without actual ownership. Payout is taxed entirely as ordinary income.

Q: How do I choose between these structures?

Consider entity type, tax bracket, expected appreciation, risk tolerance, and whether you want actual ownership.

Compare 5 equity compensation structures side-by-side to find the most tax-efficient option for your situation.

Quick Scenarios

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Current Equity Value ($)

Expected Value at Vesting ($)

Expected Value at Exit ($)

Vesting Period (years)

Ordinary Income Tax Rate (%)

State Tax Rate (%)

Side-by-Side Comparison

Net Proceeds Comparison

Structure Insights

Understanding Equity Compensation Structures

Incentive Stock Options (ISO)

Available only in C-Corps. No tax at grant or exercise (but AMT may apply). If you hold for 1+ year after exercise and 2+ years after grant, all gain is taxed as LTCG. Best for employees of venture-backed startups.

Non-Qualified Stock Options (NSO)

Available in any entity. Ordinary income tax on the spread at exercise, then LTCG on subsequent appreciation. More flexible than ISOs but less tax-efficient.

Restricted Stock (with 83(b))

Outright stock grant subject to vesting. With an 83(b) election, you pay ordinary income on current FMV at grant, then all future appreciation is LTCG. Best when current value is low.

Profits Interest / Incentive Units

LLC/partnership only. Participation in future profits above a threshold. If properly structured under Rev. Proc. 93-27, no tax at grant. Distributions taxed as ordinary income; sale of interest as LTCG.

Phantom Equity / SARs

Cash-settled equity substitute. No actual ownership. Entire payout taxed as ordinary income at vesting/exercise. Simplest structure but worst tax treatment.

Frequently Asked Questions

What is the most tax-efficient equity compensation structure?

It depends on the entity type and stage. For C-Corps, ISOs are often best. For LLCs, profits interests with 83(b) election provide the best tax treatment. Phantom equity is always the least tax-efficient.

Can I use ISOs in an LLC?

No. Incentive Stock Options (ISOs) are only available for C-Corporations under IRC Section 422. LLCs can use profits interests (incentive units) or phantom equity instead.

What is a profits interest and how is it taxed?

A profits interest is an LLC membership interest that only shares in future profits and appreciation (not existing capital). If properly structured under Rev. Proc. 93-27, there is no tax at grant. Ongoing distributions are ordinary income; sale of the interest qualifies for LTCG.

What is phantom equity?

Phantom equity (also called synthetic equity or stock appreciation rights) gives the holder the economic benefit of equity ownership without actual ownership. The payout is a cash bonus equal to equity appreciation, taxed entirely as ordinary income.

How do I choose between these structures?

Consider: (1) Entity type (C-Corp vs LLC), (2) Your tax bracket, (3) Expected appreciation, (4) Your risk tolerance, and (5) Whether you want actual ownership or just economic upside. This calculator helps you compare the tax outcomes of each.

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