Maryland Comptroller Income Tax Audit Protest

The situation

Jennifer, 44, is a senior federal contractor (Bethesda, MD, works for a defense agency in Rockville, MD). She moved from Bethesda to Naples, FL in April 2023, FL driver's license, FL voter registration, FL homestead exemption. She kept her Bethesda townhome while it was listed for sale (sold November 2023). Maryland Comptroller issued a Notice of Assessment for 2023: $67,300 in additional Maryland income tax and county income tax (Montgomery County, 3.2% local rate).

Maryland's position: Jennifer maintained Maryland domicile through November 2023 (date of Bethesda townhome sale), full Maryland residency year. At MD's combined top rate of 8.95% (5.75% state + 3.2% county), Maryland taxes her full year's $342,000 income.

Jennifer has 30 days to file a protest with the Comptroller's Office.

What Jennifer needs to understand: (a) The 30-day deadline is CRITICAL and short. Jennifer has just 30 days from the Notice of Assessment mailing date. If she misses it, she can still pay and file a refund claim, but the protest path is much harder. Filing a protest through MyCOMConnect takes 5 minutes but provides no substantive guidance. (b) Maryland's domicile test is about INTENT. Unlike New York's 183-day statutory resident test, Maryland uses the "domicile" concept. Jennifer established FL domicile in April 2023 through affirmative actions. The Bethesda townhome was listed for sale, not maintained as her primary residence. She should document: (i) FL homestead exemption filing date; (ii) FL driver's license and voter registration dates; (iii) date she began living at FL address; (iv) no overnight stays at Bethesda townhome after April (rented to a friend). (c) The county income tax adds unique MD complexity. Maryland's assessment includes BOTH state income tax AND Montgomery County income tax. If Jennifer contests her residency status, the county tax also disappears, but the calculation needs to be verified. (d) MD Tax Court provides independent review if the informal hearing fails. The Maryland Tax Court is a separate state agency with appointed judges. (e) MD tax attorneys quoted Jennifer $11,000-$15,000 for Comptroller protest and Tax Court representation. The 30-day deadline means Jennifer needs the domicile-abandonment analysis framework immediately.

Second portrait: Robert, 51, is a federal government attorney living in Silver Spring, MD (Montgomery County). He works 3 days/week in DC (at federal agency offices) and 2 days/week from his Silver Spring home office. Maryland Comptroller issued a Notice of Assessment for $18,400: MD claims Robert failed to properly claim the Maryland-DC reciprocity credit. Under the MD-DC reciprocity agreement, Robert owes income tax ONLY to Maryland (not to DC), but Robert's employer withheld DC income tax for 2023, and Robert filed a DC refund claim. The MD Comptroller's assessment relates to a mathematical error in Robert's MD/DC credit calculation that resulted in under-reporting MD income.

Robert's defense: His actual Maryland income tax liability was correctly calculated, the assessment results from the Comptroller's automated matching system incorrectly applying the DC reciprocity credit. Robert needs to provide documentation showing: (a) his employer's W-2 allocations; (b) his DC income tax return showing the DC refund claimed; (c) the correct MD reciprocity credit calculation. The informal Comptroller hearing can likely resolve this with proper documentation.

Who receives this

Maryland taxpayers who received a Comptroller Notice of Assessment from an income tax audit. Primary segments: (1) Bethesda/Silver Spring/Columbia residents who changed domicile to FL/TX/VA while maintaining MD connections; (2) DC-area federal workers and contractors with MD-DC income allocation and reciprocity credit disputes; (3) MD residents who work in DC, VA, or PA and have reciprocity agreement calculation errors; (4) Self-employed MD residents with Schedule C deduction disputes. Scale: Maryland is a top-10 most educated and highest-income states (median household income ~$98,000); the DC area generates disproportionate high-income audit activity.

Why the agency will not advise you

MD Comptroller cannot advise taxpayers how to contest its own assessments. MD Tax Court is genuinely independent (separate state agency). MyCOMConnect protest filing = mechanism only. Maryland's unique county income tax creates calculation complexity not found in other states. No self-serve MD income tax audit protest tool found.

Key facts, with sources

• The Comptroller of Maryland administers the state income tax under the Maryland Tax-General Article. When an audit results in additional tax due, the Comptroller issues a Notice of Assessment. Under Md. Tax-General § 13-508, the taxpayer has 30 days from the notice date to file a written protest with the Comptroller's Office. The protest initiates an informal hearing process. If the informal hearing doesn't resolve the dispute, the Comptroller issues a Final Determination. The taxpayer then has 30 days from the Final Determination to appeal to the Maryland Tax Court (Md. Tax-General § 13-527). The Maryland Tax Court is an independent state agency established under Md. Tax-General § 13-501 et seq., its judges are appointed through the Maryland judicial selection process and are NOT employees of the Comptroller's Office. Maryland Tax Court decisions are reviewable by the Circuit Court and Court of Special Appeals. Maryland's income tax structure is uniquely complex: the state imposes a graduated income tax (2% to 5.75%) PLUS each of Maryland's 23 counties and Baltimore City imposes a local income tax (ranging from 2.25% to 3.20% of state taxable income, NOT of federal income). The combined state + county effective top rate is 8.95% for residents of most Maryland counties. MyCOMConnect is the Comptroller's online portal, it provides an 'Online Hearing Appeal Request' filing mechanism (digital protest submission) but no substantive guidance on what arguments to make or evidence to present. Source: Maryland Tax Court — General Information · Appealing Maryland Comptroller Tax Assessments — TaxReliefCounsel · Maryland Tax Court Procedures
• Maryland's unique geographic position, adjacent to Washington, DC and Virginia, creates a massive DC-area commuter population with complex multi-state income tax situations. Approximately 400,000+ Maryland residents work in DC; another 150,000+ work in Virginia. Maryland has income tax reciprocity agreements with DC, Pennsylvania, Virginia, and West Virginia, residents who work in a reciprocity state pay income tax ONLY to Maryland, not to the work state. However, the reciprocity agreements create disputes about which income qualifies and how to properly claim credits. The 30-day protest deadline is VERY short, among the shortest in any state's income tax audit protest process. Maryland income tax attorneys (Gabaie & Associates, Tax Relief Counsel) charge $3,000-$20,000 for Comptroller protest and Maryland Tax Court representation. No self-serve MD income tax audit protest preparation tool was found. Source: Maryland Comptroller — Hearings FAQs · Maryland Tax Audit Attorney — Gabaie & Associates · What Triggers a MD State Tax Audit 2026 — Southern Maryland Chronicle

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. Maryland Tax Court — General Information
2. Appealing Maryland Comptroller Tax Assessments — TaxReliefCounsel
3. Maryland Tax Court Procedures
4. Maryland Comptroller — Hearings FAQs
5. Maryland Tax Audit Attorney — Gabaie & Associates
6. What Triggers a MD State Tax Audit 2026 — Southern Maryland Chronicle