In plain terms
How the tax works
Without a public market, you may owe tax on value you cannot easily convert to cash.
exercises create ; exercises can create ; creates wage income.
Private sometimes have settlement conditions (like a liquidity event) that affect timing, check your specific terms.
Valuations rely on 409A appraisals, which can move and change the spread you are taxed on.
What to check on your end
- Whether your equity is options (/) or , and the exact terms.
- When tax is triggered under your grant, exercise, , or a liquidity event.
- Whether early exercise and 83(b) are available.
- Your cash position for tax with no liquidity.
- What a future IPO, , or acquisition would mean for you.
Common mistake
Example scenario (hypothetical)
Illustration only, not your tax situation.
When a CPA is worth it
- You are exercising private-company options.
- You face or a large ordinary-income spread.
- A , IPO, or acquisition is on the horizon.
- You are weighing an .
Sources and notes
Primary tax claims on this page are supported by the official and secondary sources below. Broker and software links describe reporting mechanics — confirm rules against IRS or state guidance.
ISO and NSO exercise timing, AMT on ISO spread, and disposition reporting.
- IRS Topic 427 — Stock options
Internal Revenue Service · Official
Overview of statutory (ISO, ESPP) vs nonstatutory options, exercise timing, and Form 3921/3922 reporting.
- Instructions for Form 6251 — Alternative Minimum Tax
Internal Revenue Service · Official
AMT treatment of ISO exercise spread and related adjustments.
Related calculators
Related pages
- Exercising Options Before IPO
Exercising before IPO can trigger tax before you have liquidity — plan cash, AMT, and 83(b) carefully.
- Tender Offer Tax Guide
Tender offers can combine wage reporting and stock sales — save confirmations and plan for withholding.
- Startup Equity Tax Checklist
Use this checklist to avoid missing elections, exercise windows, and tax payments before you have cash to pay.
For learning, not filing
VestingTax.com is not a CPA firm or tax preparer. Grants, employers, and states all differ. Use the cited IRS and state sources above, your own documents, and a qualified tax professional before you make decisions from this guide.
