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Equity compensation tax calendar: what to check before vesting, selling, or filing

A planning calendar for equity compensation tax events — vest, exercise, sell, move, and file — with documents to gather at each step.

You hold RSUs, stock options, or ESPP shares and want a year-round checklist of documents to save and decisions to research — without treating this page as filing advice.

In plain terms

Equity comp tax surprises usually come from timing: wages, exercise , broker basis, and state moves each have their own paperwork window. Use this calendar to gather documents and read the right guide before each event — then confirm with your records and a qualified professional at filing time.

Gather before you start

  • Your grant agreements and equity portal access.
  • Last year's , , and any Form 3921.
  • Pay stubs and confirmations from the current year.
  • State residency records if you moved or work remotely.

Calendar for educational planning only. Deadlines and forms vary by employer plan and tax year.

How the tax works

Before a : value is generally taxed as wages when shares deliver. Read your confirmation when it posts — , shares sold for , and net shares delivered. Run the tax calculator with salary and bonus so gaps do not surprise you in April.

After a : Save the confirmation, updated pay stub, and brokerage delivery notice. for future sales is usually -date — you will need it when arrives with $0 basis.

Before selling shares: Check holding period from or purchase date, basis, and whether already included income. Use the calculator if broker data looks wrong.

Before exercising options: Read vs rules in your grant. spread may trigger even without a sale; spread is generally wages. Model tax before exercise — especially if the company is private and shares are not liquid.

Before moving states: Note move date, employer office vs remote policy, and dates on both sides of the move. States source wage income differently; a move mid-year may split obligations.

Before filing taxes: Reconcile wages to confirmations, to Form 8949 basis adjustments, and Form 3921 for exercises. Import broker data only after basis is verified.

Documents to save all year: Grant agreements, and exercise confirmations, pay stubs with equity lines, , and supplemental broker statements, Form 3921, purchase confirmations, and state move records (lease, voter registration, etc.).

More detail (1 additional point)

When to talk to a professional: Multiple states, large exercises, 83(b) questions, tender offers, or a balance due after following employer are common triggers. This calendar is educational — not a substitute for personalized advice.

What to check on your end

  • dates and expected before each ( tax calculator).
  • rate on confirmations vs your estimated bracket ( gap calculator).
  • Basis on before importing into tax software.
  • exercise dates and Form 3921 against your records.
  • Move date vs and work dates for state returns.
  • Estimated payment deadlines if gaps are large (IRS Publication 505).
  • Post-termination option exercise deadlines if you are leaving.
1 more checklist item
  • purchase dates and disqualifying disposition rules if you sell shares.

Waiting until March to find vest paperwork

Equity portals and payroll systems may limit how far back you can pull confirmations. Download and exercise PDFs when they post — not when your CPA asks in filing season.

What to pull from your files

  • confirmations with and detail.
  • Exercise confirmations and Form 3921 for .
  • and broker supplemental tax lot reports.
  • Box 1 and any wage breakdown.
  • 83(b) mailing proof if you early-exercised.
  • State residency evidence for the year of a move.

Example scenario (hypothetical)

Illustration only, not your tax situation.

Example: Sam has vests in March and September, exercises in June, and sells shares in November. Sam saves each confirmation when issued, runs the gap calculator after the September , and checks basis in January before importing — avoiding a duplicated on the November sale.

Questions people ask

When should I run an RSU tax calculator?
Before each material — especially when salary, bonus, and multiple vests stack in one year. It is a planning estimate, not a filed return.
Do I need estimated payments for RSU vests?
If on vests may not cover your marginal tax, many people make estimated payments or increase W-4 on salary. Safe-harbor rules depend on prior-year liability — see IRS estimated tax guidance.
What is the most common filing-season document?
with incomplete on sales. Fix basis using before e-filing.
Does this calendar replace a CPA?
No. It lists events and documents to research. Complex grants, , multi-state moves, and tender offers usually need personalized review.

When a CPA is worth it

  • You exercised or early-exercised with an .
  • You moved states with vests on both sides of the move date.
  • You participated in a or .
  • gaps recur every year despite W-4 changes.

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.

Timing of vest wage income, withholding methods, and filing reconciliation.

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Related pages

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.

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