You have RSU vests and exercised nonqualified stock options in the same calendar year. You want to know how both hit W-2 wages, how withholding stacks, and what to expect on pay stubs and at filing.
Start here
What you need before using this
- confirmations with .
- exercise confirmation with spread calculation.
- Pay stubs from and exercise periods.
- YTD after both events if available.
- exercise tax calculator estimate.
NSO and RSU reporting follows employer payroll and plan rules. Tax treatment follows IRS wage rules at exercise and vest.
Why this happens
spread at exercise is income — same character as .
Both events report on employer Box 1 for the exercise and year.
Flat supplemental on each event does not account for other wages in same year.
Box 12 Code V identifies exercise portion included in Box 1 — not separate income.
does not use Code V — distinguishes option exercise from on review.
FICA applies to both and spread until wage base limits.
Cashless exercise pay stub may look confusing alongside stub — save both.
adds separate from wage reporting.
Multiple vests plus one large exercise common before IPO or tender.
Estimated tax may be needed when combined falls short of .
State tax applies to both wage layers in most states.
Exercise-and-hold creates wage tax without sale proceeds — different mechanic.
W-4 at employer affects regular paycheck only — supplemental rates often override on equity events.
Compare -and-bonus-same-year — same stacking logic for .
Pub. 525 treats both as compensation income at respective triggering events.
What to check
- Sum of plus spread vs Box 1.
- Box 12 Code V matches spread.
- Federal on each pay stub vs .
- FICA YTD after both events.
- if .
- gap calculator for full-year income.
- State on both events.
- Cash on hand if exercise-and-hold without sale.
Assuming NSO Code V on W-2 is separate tax from RSU wages
What to check in your documents
- confirmations.
- exercise confirmation.
- Pay stubs from and exercise.
- with Box 1 and Code V.
- if shares sold.
Two RSU vests and one NSO exercise
Illustration only, not your tax situation.
Questions people ask
- Do RSU and NSO both go on W-2?
- Yes — and exercise spread are both ordinary wages in Box 1 for typical plans.
- RSU and NSO withholding same year?
- Each event may use supplemental flat — combined may still under- vs .
- Box 12 Code V with RSU on W-2?
- Code V is exercise only. in Box 1 without Code V — both are wages.
- NSO exercise vs RSU vest pay stub?
- Both show — spread math differs. See exercise pay stub guide.
- FICA on RSU and NSO same year?
- Both count toward FICA wages until Social Security wage base cap.
- Estimated tax after RSU and NSO?
- Consider Q4 estimated payment if combined below safe harbor.
- NSO same-day sale plus RSU vest?
- wages from spread and ; for sale proceeds separately.
- Which calculators help?
- tax calculator, exercise tax calculator, gap calculator.
- Related guides?
- exercise tax explained, Box 12 Code V, and bonus same year, pay stub after .
- When to ask a CPA?
- spread plus vests exceed salary substantially same year.
When to get help from a tax pro
- Multiple exercises and vests stacking six-figure wage income.
- Box 1 does not reconcile to plus spread totals.
- Multi-state after large exercise and .
- with complex and coordination.
Related calculators
- RSU Tax Calculator
Model federal and state taxes on your RSU vest, compare withholding to estimated tax, and see what you may keep.
- NSO Exercise Tax Calculator
NSO exercises usually create W-2 wage income at exercise — estimate taxes and withholding before you exercise.
- RSU Withholding Gap Calculator
Focus on the gap between what your employer withholds on RSU vests and what you may owe when everything is reconciled.
Related pages
- NSO Exercise Tax Explained
NSO exercise is usually a paycheck event — wage income, withholding, and possible cash due without a sale.
- NSO W-2 Box 12 Code V Explained
Box 12 Code V identifies NSO exercise spread included in Box 1 — do not report it again as separate wages.
- NSO Exercise Pay Stub Withholding
NSO spread hits pay stub as supplemental wages — withholding is a payroll estimate, not your final tax.
- RSU and Bonus in the Same Year
Multiple supplemental wage events in one year can push you into higher marginal brackets — flat withholding on each event may still leave a year-end gap.
- Reading Your Pay Stub After an RSU Vest
Vest FMV adds to gross wages on the same pay stub as salary — supplemental withholding and FICA lines spike, but net pay alone does not prove your full-year tax is covered.
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.
RSU vest and NSO exercise spread both as W-2 wages; Box 12 Code V on NSO portion.
- IRS Publication 525 — Taxable and Nontaxable Income
Internal Revenue Service · Official
Covers compensation income from stock-based pay, including restricted property under section 83.
- IRS Topic 427 — Stock options
Internal Revenue Service · Official
Overview of statutory (ISO, ESPP) vs nonstatutory options, exercise timing, and Form 3921/3922 reporting.
- About Form W-2 — Wage and Tax Statement
Internal Revenue Service · Official
W-2 box descriptions including Box 1 wages, Box 14 employer informational use, and withholding boxes.
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.