Anne Arundel County, MD Property Tax Appeal Guide for 2027

What deadline matters first

For Anne Arundel County, real-property assessment appeals are handled by the Maryland State Department of Assessments and Taxation, usually called SDAT. The county finance office collects taxes, but SDAT is the assessment agency.

For the 2027 tax year, the regular forward-looking Petition for Review deadline is January 4, 2027. Maryland’s Petition for Review form says the form is due on or before the first business day following January 1 for the next taxable year starting July 1, and January 4, 2027 is the first business day after January 1, 2027. SDAT Petition for Review form

That deadline is not the only deadline. If you receive a reassessment notice, SDAT says appeals must be filed within 45 days of the notice date. New owners who qualify after a transfer between January 1 and June 30 generally use the New Owner Appeal on the same SDAT form and must file within 60 days from the date of transfer. SDAT assessment appeal process

For a simple tax-impact estimate, the reusable 2027 countywide non-municipal rate used here is 0.0108, or about $10.80 per $1,000 of assessed value. That combines Anne Arundel County’s adopted FY27 rate of 96.8 cents per $100 with Maryland’s state real-property rate of 11.2 cents per $100. Annapolis and Highland Beach may add municipal rates. Anne Arundel FY27 budget announcement Anne Arundel current tax rates

For a sample appeal count, SDAT’s department-level appeals table listed 2,643 Anne Arundel County department appeals in FY2017, equal to 3.20% of notices sent. That is an older official volume metric, so use it only as context that appeals are a normal part of the assessment system. SDAT appeals statistics PDF

The common value appeal

The most common homeowner issue is Value / Total Market Value. In plain English, this means you believe SDAT’s value for your land and house together is more than the property would have sold for on the relevant valuation date.

For this reusable 2027 policy cycle, the target date is January 1, 2027. Maryland’s appeal materials call this kind of date the date of finality, meaning the date when the assessor’s estimate of value is fixed for the tax year under appeal. Maryland PTAAB FAQs

SDAT says the assessment should be based on market value, and that comparable properties are recently sold properties similar to the property being appraised. The more similar the sale property is to yours, the more helpful the sale price usually is. SDAT real property assessment Q&A

When you make a Value / Total Market Value appeal, avoid arguing only that your assessment went up too much. SDAT says points such as the percent increase, past values, the tax bill amount, or county services are not relevant to the value under appeal. SDAT assessment appeal process

Other reasons you might appeal

Classification means the property may be in the wrong assessment class or use category. Maryland’s Petition for Review or New Owner Appeal of Real Property form expressly covers appeals of valuation or classification. SDAT Petition for Review form

Property worksheet / characteristic error means SDAT’s description of the property may be wrong in a way that affects value. Examples can include incorrect living area, bathrooms, fireplaces, land data, condition, construction features, or other characteristics shown on the worksheet.

Taxable status / exemption or credit issue means the dispute is about taxable treatment, exemption status, credit-related assessment treatment, or special assessment treatment where Maryland law allows review. This is different from saying comparable sales show a lower market value.

Illegal, unequal, or other erroneous assessment is a later-level legal label. Use it carefully. In plain English, it means the assessment is alleged to be unlawful, unequal compared with property of the same class, or otherwise wrong for a specific legal reason.

If your Notice of Assessment says something else changed

A Notice of Assessment is SDAT’s written assessment notice. It shows your old and new market values and related assessment information. SDAT says property owners normally receive a Notice of Assessment every three years, and the new value may reflect market changes, additions, structural changes, or other conditions affecting value. SDAT assessment appeal process

If your Notice of Assessment mentions a change to the property, read it together with the SDAT worksheet. A small data mistake can matter if it changes how the assessor viewed your home. SDAT specifically tells owners to identify mathematical errors or inaccurate property characteristics, such as the number of bathrooms or fireplaces. SDAT assessment appeal process

If the issue is a real physical defect, bring evidence that explains both the defect and the effect on value. PTAAB gives examples such as photos, written reports, expert testimony, witnesses, repair or replacement estimates, or a market-derived adjustment. Maryland PTAAB FAQs

What evidence helps

Start with SDAT’s own materials. At the Supervisor's level, SDAT provides a property worksheet and Area Sales Listing before the scheduled hearing. The worksheet helps you check the property facts, and the sales listing helps you understand the sales SDAT considered. SDAT assessment appeal process

For comparable sales, look for recent, similar, arm’s-length sales. In homeowner language, that usually means ordinary open-market sales between unrelated buyers and sellers, not family transfers, foreclosure-related transactions, or unusual deals unless you can clearly explain why they still show market value.

For this 2027 page, TaxSauce uses a conservative working screen of sales from January 1, 2024 through January 1, 2027, usually within about 5 miles, with up to 10 candidate sales. Maryland does not publish a strict Anne Arundel-only mileage, size-variance, lot-variance, or maximum-comparable rule, so similarity matters more than hitting a formula.

Good comparable sales usually match the things buyers actually pay for: location, neighborhood or subdivision, waterfront or non-waterfront setting, school and amenity influence, property type, building size, age, condition, quality, lot utility, and major features.

If your case later reaches the Maryland Tax Court and you rely on other properties, SDAT’s appeal guidance says Rule 7 requires an exchange of information for other properties at least 10 days before the hearing, including sale date and sale price when the property is used as a sale. SDAT assessment appeal process

What the board can and cannot decide

The first review is the Supervisor's level, an informal SDAT hearing with an assessor designated by the Supervisor of Assessments. SDAT says this is intended for exchange of information, including how the appraisal was made and what factors affect value. SDAT assessment appeal process

If you disagree with SDAT’s final notice after the Supervisor's level, the next appeal body is the Property Tax Assessment Appeals Board (PTAAB). Maryland describes PTAAB as a separate and independent body from SDAT. After PTAAB, a further appeal may go to the Maryland Tax Court. SDAT assessment appeal process Maryland PTAAB FAQs

These bodies can consider assessment issues such as value, classification, property data, and other legally appealable assessment errors. They do not set Anne Arundel County’s tax rate, decide the county budget, change local services, or reduce an assessment simply because the tax bill feels unaffordable.

At PTAAB, the homeowner has the burden of proof. Maryland’s PTAAB FAQ explains that the petitioner must show by clear and convincing evidence that SDAT’s decision was incorrect. This is why organized sales, photos, records, and clear explanations matter. Maryland PTAAB FAQs

How TaxSauce helps

TaxSauce helps you turn a stressful assessment notice into a calm, organized review. We focus first on the deadline, the official appeal reason, and the evidence that actually speaks to SDAT’s assessment decision.

For a Value / Total Market Value issue, TaxSauce can estimate value using recent comparable sales and help you compare them to SDAT’s Total Market Value. For a Property worksheet / characteristic error, we help you list the specific facts to check, such as size, bathrooms, condition, finished areas, and land characteristics.

TaxSauce can also help you prepare a homeowner-friendly packet for SDAT review. That may include a short explanation, comparable-sale summaries, worksheet concerns, and supporting documents. You review the information, decide what to include, and submit through SDAT’s official filing process.

We do not promise a reduction, guarantee acceptance, or replace legal advice. The goal is to help you understand the official process, avoid missing important dates, and present the strongest truthful information you have.