Massachusetts DOR Income Tax Audit Protest

The situation

Michael, 47, is a senior software architect who lived in Framingham, MA for 11 years. In August 2023, Michael relocated to Austin, TX, TX driver's license, TX voter registration, TX homestead purchase. He listed his Framingham home for sale and it sold in December 2023 (4-month overlap). Michael still works for his Boston employer (Accenture Federal Services) from his Austin home office.

MA DOR issued a Notice of Assessment for 2023: $54,200 in additional Massachusetts income tax, MA's position: Michael was a Massachusetts domiciliary through December 2023 (when the Framingham home sold), making 2023 a full MA residency year. MA taxes Michael on his full year's income (~$340,000 salary + $180,000 in RSU vests = $520,000).

Michael has filed a Form ABT Abatement Application through MassTaxConnect, which simply allowed him to upload documents. The MassTaxConnect portal did not help him understand what arguments to make or what documentation would support his domicile-change claim.

What Michael needs to understand: (a) Massachusetts's "domicile" test is about INTENT, not days in the state. Unlike New York's 183-day statutory resident test, MA uses the "domicile" concept: MA is your domicile if you intend it to be your permanent home. Michael established TX domicile in August 2023 (TX license, TX voter registration, TX home purchase). The Framingham home was listed for sale, it was not maintained as his primary domicile after August. (b) Maintaining a home for sale does NOT extend MA domicile. MA case law distinguishes between retaining a home as a residence vs. actively selling a former residence. Michael should document: (i) date he moved into Austin home; (ii) Framingham listing date and listing price; (iii) no personal use of Framingham home after August (no overnight stays); (iv) change of all key connections to TX (banking, financial advisors, professional registrations). (c) The abatement application should lead with the domicile-abandonment argument. The key document: a chronological "domicile change" evidence memo with the specific dates and actions demonstrating TX domicile establishment + MA domicile abandonment. (d) Boston tax attorneys quoted Michael $9,500 for the DOR abatement and potential ATB appeal. The domicile-abandonment analysis and abatement letter are structured analytical steps Michael can substantially complete himself with the right MA-specific framework.

Second portrait: Sarah, 33, is a graphic designer living in Portsmouth, NH who worked entirely from home during 2020-2021 for her Boston-based employer (Liberty Mutual Insurance). MA DOR issued a Notice of Assessment for 2021: $18,400 in additional Massachusetts income tax, under MA's COVID regulation (830 CMR 62.5A.3), MA claims Sarah's 2021 wages are Massachusetts-source income because her employer is Massachusetts-based, even though Sarah worked 100% from Portsmouth, NH.

Sarah's defense: The COVID regulation expired in September 2021. For the 9 months of 2021 after January 1, Sarah worked exclusively in NH (she has Slack logs, VPN records, and time-entry records showing NH location). MA income for her is limited to the specific days she actually traveled to the Boston office in 2021 (estimated 12 days = approximately 5% of her workdays). MA DOR's "full year" assessment dramatically overstates her MA-source income.

Who receives this

Massachusetts taxpayers who received a MA DOR Notice of Assessment or Notice of Abatement Determination from an income tax audit. Primary segments: (1) High-income individuals who changed domicile from MA to NH, FL, TX, or other states, domicile abandonment disputes; (2) NH/RI/CT residents who worked remotely for MA employers during 2020-2021 and face MA COVID rule assessments; (3) Self-employed workers in Boston-area with Schedule C deduction disputes; (4) MA taxpayers with short-term capital gains classification disputes. Scale: MA DOR conducts tens of thousands of income tax audits annually; the Boston metro tech/finance community generates significant high-value domicile and equity compensation disputes.

Why the agency will not advise you

MA DOR cannot advise taxpayers how to contest its own assessments. ATB is genuinely independent (M.G.L. c. 58A). MassTaxConnect = filing portal only, no substantive guidance. 60-day ATB appeal deadline from Notice of Abatement Determination. Professional market ($3,000-$25,000). MA's unique COVID remote work rule created a class of NH/RI workers with ongoing assessment exposure that has no self-serve defense resource.

Key facts, with sources

• The Massachusetts Department of Revenue conducts income tax audits under M.G.L. c. 62C. When an audit results in additional tax due, DOR issues a Notice of Assessment. The taxpayer may file an Application for Abatement (Form ABT) with the DOR through MassTaxConnect or paper form. If DOR denies the abatement in whole or in part, it issues a Notice of Abatement Determination. The taxpayer then has 60 days from the Notice of Abatement Determination to appeal to the Massachusetts Appellate Tax Board (ATB). The ATB is an independent, quasi-judicial administrative board created by M.G.L. c. 58A, § 1. ATB members are appointed by the Governor for fixed terms and are NOT employees of the Massachusetts DOR. ATB decisions are reviewable by the Massachusetts Appeals Court or Supreme Judicial Court. MassTaxConnect (MTC) is the DOR's online tax administration portal, it provides a mechanism for FILING an abatement application electronically but provides no substantive guidance on what arguments to make, what documentation to gather, or how to structure a protest against the DOR's audit findings. Massachusetts income tax rates: 5% flat rate (for wages, salaries, business income, long-term capital gains); 9% for short-term capital gains (held 12 months or less); 12% for interest/dividends on certain Massachusetts-specific income. Massachusetts domicile rule (M.G.L. c. 62, § 1(f)): A 'resident' is any individual domiciled in Massachusetts plus any individual who maintains a permanent place of abode in MA and spends more than 183 days per year in MA. An individual with Massachusetts domicile is taxed on worldwide income. Source: Massachusetts Appellate Tax Board — Mass.gov · Appealing a State Tax Bill — Mass.gov · MA DOR Audit Process — Mass.gov
• Massachusetts's COVID-era emergency income tax regulation (830 CMR 62.5A.3) treated wages earned by nonresident employees of Massachusetts employers as Massachusetts-source income even when the employees worked remotely from outside Massachusetts during the pandemic. The regulation was effective March 10, 2020 through September 13, 2021. However, Massachusetts DOR has continued to issue assessments on remote workers for tax years 2020 and 2021 based on this regulation, and some taxpayers are still contesting these assessments in 2025-2026. New Hampshire challenged the regulation at the U.S. Supreme Court (New Hampshire v. Massachusetts), but the Court declined to take the case. As a result, NH residents who worked remotely for MA employers during 2020-2021 continue to face MA income tax assessments. The professional market for Massachusetts income tax audit defense: Boston tax attorneys (GMD Tax Law, Kerrigan Law Firm, Shapiro Weissberg & Garin) charge $3,000-$25,000+ for DOR audit abatement and ATB appeal representation. No self-serve MA income tax audit protest preparation tool was found. Source: MA COVID Remote Work Regulation — 830 CMR 62.5A.3 · GMD Tax Law — Massachusetts State Tax Issues · ATB Filing Appeal — Mass.gov

When to bring in a professional

Self-serve responses fit routine cases: clear facts, amounts a business can absorb, and a deadline still ahead of you. Bring in a licensed professional when the amount at stake is large relative to their fee, the facts are genuinely disputed, criminal exposure is possible, or the deadline has already passed. A short paid consultation to sanity-check your plan is often worth it even when you handle the filing yourself.

All sources for this guide

1. Massachusetts Appellate Tax Board — Mass.gov
2. Appealing a State Tax Bill — Mass.gov
3. MA DOR Audit Process — Mass.gov
4. MA COVID Remote Work Regulation — 830 CMR 62.5A.3
5. GMD Tax Law — Massachusetts State Tax Issues
6. ATB Filing Appeal — Mass.gov