Your employer offered a same-day sale on NSO exercise — or you exercised and sold NSOs immediately. You want to know why W-2 wages jumped and what should appear on 1099-B.
Start here
What you need before using this
- Exercise confirmation: strike, at exercise, shares.
- confirmation: sale price and shares sold.
- after exercise for wage and lines.
- for the sale.
Plan administration varies by employer and broker.
Why this happens
are nonstatutory — spread is wages when you exercise, not when you sell.
programs exercise and sell in one workflow for liquidity.
Employer withholds on the wage spread; brokerage reports the sale separately.
Basis on for shares often starts at exercise , not strike.
What to check
- Spread reported as wages vs sale proceeds on .
- on exercise vs estimated total tax.
- Whether any shares were withheld for taxes vs sold at your instruction.
- Short-term if sale price differed slightly from exercise .
Treating the entire 1099-B proceeds as capital gain
What to check in your documents
- Exercise and sale confirmations from equity portal.
- wage detail for exercise.
- proceeds and basis.
- Pay stub if supplemental posted separately.
Example scenario (hypothetical)
Illustration only, not your tax situation.
Questions people ask
- Why is NSO same-day sale wage income?
- spread is taxed as wages at exercise regardless of sale timing. just combines exercise and sale for convenience.
- NSO same-day sale vs RSU sell-to-cover?
- tax hits at as wages; is . is exercise (wages) plus immediate sale — different grant type, similar need to reconcile and .
- Do I need cash to exercise with a same-day sale?
- Often minimal — the sale proceeds fund exercise and tax. Confirm your plan’s cashless exercise mechanics.
When to get help from a tax pro
- wages and both show large numbers you cannot reconcile.
- You exercised but did not sell same day.
- You have and exercises in one year.
Related calculators
Related pages
- NSO Exercise Tax Explained
NSO exercise is usually a paycheck event. wage income, withholding, and possible cash due without a sale.
- NSO Withholding Explained
Withholding on NSO exercise can mirror RSU gaps. flat rates may not match your actual bracket.
- Same-Day Sale vs Sell-to-Cover
Both methods sell shares around vest, but who initiates the sale and how proceeds flow can differ.
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.
NSO spread as wages at exercise; sale on 1099-B.
- IRS Topic 427 — Stock options
Internal Revenue Service · Official
Overview of statutory (ISO, ESPP) vs nonstatutory options, exercise timing, and Form 3921/3922 reporting.
- IRS Publication 525 — Taxable and Nontaxable Income
Internal Revenue Service · Official
Covers compensation income from stock-based pay, including restricted property under section 83.
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.
