You work in Massachusetts — Boston biotech, Cambridge tech, or remote for a MA employer — and want the effective RSU tax rate on vest FMV including MA state income tax plus federal and FICA.
Start here
What you need before using this
- MA residency for year.
- confirmation and MA on pay stub.
- MA wage boxes.
- MA DOR guidance for the tax year.
- tax calculator with Massachusetts selected.
Massachusetts tax rates follow MA DOR guidance for the filing year. Confirm current rules before planning.
Why this happens
MA treats compensation including equity at as taxable wages when delivered.
Federal tax applies on with its own brackets and supplemental .
FICA applies on all wages until Social Security wage base.
MA on may use methods that under- vs stacked .
Moving from MA to no-tax state mid-year triggers part-year MA return.
Moving into MA mid-year may tax post-move vests as MA resident income.
Remote MA resident working for out-of-state employer still typically MA taxes wages.
Estimated MA tax may be needed when MA on falls short.
tax rate Massachusetts searches mean combined MA federal FICA planning.
Biotech and pharma employees often see large annual stacks in MA.
Short-term on later sale is separate from wage event.
Stock options exercise adds separate wage or events same year as vests.
Compare to New Hampshire — no wage income tax but other considerations for border workers.
Boxes 16–17 include in MA wages when MA payroll applies.
MA tax law changes — confirm rates for filing year rather than memorizing old percentages.
What to check
- MA state on pay stub.
- MA wage and tax boxes.
- Federal Box 1 includes .
- MA with total income for filing year.
- gap MA plus federal.
- Move date if part-year MA.
- Calculator vs pay stub after .
- MA DOR pub for current year equity wage treatment.
Using an outdated flat MA rate from an old blog post for RSU planning
What to check in your documents
- MA pay stub.
- MA boxes.
- confirmation.
- MA estimated tax payments if made.
- Move documentation if part-year.
Cambridge tech employee with annual vest stack
Illustration only, not your tax situation.
Questions people ask
- What is the RSU tax rate in Massachusetts?
- No flat rate — MA state tax plus federal plus FICA on based on total income and current MA rules.
- Are RSUs taxed in Massachusetts?
- Yes — is wage income for typical MA residents on MA-sourced compensation.
- MA RSU supplemental withholding?
- Employers may MA tax on using supplemental methods — may not match final .
- MA vs New Hampshire RSU tax?
- NH has no tax on wage income. MA residents working in MA owe MA tax on wages.
- Moved from MA to Texas — MA tax on RSU?
- MA may tax vests while MA resident. Post-move TX vests avoid TX state income tax.
- Remote worker in MA RSU tax?
- MA resident generally owes MA tax on wages — see remote work guide for multi-state cases.
- Which calculator for MA RSU?
- tax calculator with Massachusetts selected and gap calculator.
- W-2 MA boxes for RSU?
- State wage and tax boxes should reflect when MA payroll reporting applies.
- FICA on MA RSU vest?
- Federal FICA on — same nationwide until wage base cap.
- Related guides?
- Massachusetts tax guide, effective tax rate, moving states overview, remote work guide.
When to get help from a tax pro
- Part-year MA resident with large equity income.
- Multi-state allocation MA and remote employer state.
- Employer omitted MA on MA resident .
- MA law change affecting your year.
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.
- 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.
- RSU State Tax Comparison Calculator
Run the same RSU vest through different state assumptions to see how location may change estimated tax.
Related pages
- Massachusetts RSU Tax Guide
Massachusetts taxes RSU vest income as wages; plan for state withholding on top of federal.
- New York RSU Tax Guide
New York taxes RSU vest income as compensation; city tax may add another layer for NYC residents.
- RSU Taxes When Moving States
Moving mid-year can mean more than one state has a claim on part of your compensation — planning beats guessing.
- RSU Effective Tax Rate Explained
There is no flat RSU tax rate — effective tax on vest FMV includes federal, FICA, and state components that change with your total income.
- RSUs and Marginal Tax Rates
RSU vest income stacks on salary — your marginal rate on that vest slice may be higher than flat withholding.
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.
Massachusetts personal income tax on vest wages; confirm current MA DOR rates.
- Massachusetts DOR — Personal Income Tax
Massachusetts Department of Revenue · Official
Massachusetts personal income tax rules and current rate information.
- 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.