Maryland's property tax system splits responsibility in a way that trips up a lot of homeowners: the State Department of Assessments and Taxation (SDAT) — not the county — determines every property's assessed value, using a rolling triennial reassessment cycle that reappraises roughly one-third of the state's 2 million-plus property accounts each year. Once SDAT sets the value, each of Maryland's 24 counties (23 counties plus Baltimore City) and hundreds of incorporated municipalities then set their own independent tax rate, expressed in dollars per $100 of assessed value, and apply it to that state-determined assessment. There's no separate Maryland state property tax rate applied to a typical homeowner beyond a small statewide levy (currently $0.112 per $100) that gets added on top of the local rate.
Unlike states such as Arizona or Georgia that apply a fractional assessment ratio (taxing only 10% or 40% of a property's value), Maryland assesses residential property at 100% of estimated full market value — but it cushions the impact of a hot housing market two ways. First, any increase in value from a triennial reassessment is phased in evenly over three years rather than hitting your bill all at once. Second, the Homestead Tax Credit caps how much of that phased-in increase is actually taxable each year, with a 10% statewide ceiling that many counties set even lower. This guide walks through the assessment cycle, the Homestead Tax Credit and its county-by-county caps, the income-based Homeowners' Property Tax Credit Program, the 100% disabled veteran exemption, how county rates compare, and a worked example for a home in Montgomery County.
Maryland is one of only a handful of states where property assessment is a state function rather than a county one. SDAT maintains assessment records for every one of Maryland's more than 2 million real property accounts through 24 local assessment offices (one per county plus Baltimore City), and appraises each property using standard valuation methods — sales comparison, cost, and income approaches — to estimate fair market value.
Rather than reassessing all properties every year, Maryland divides each county and Baltimore City into three roughly equal geographic groups. Each group is reappraised once every three years, so about one-third of all properties statewide receive a new assessment notice each January, with the new value phased in starting that July. This means your neighbor's assessment notice might arrive a year (or two) before or after yours, depending on which of the three assessment groups your specific property falls into.
When a triennial reassessment increases a property's value, Maryland doesn't apply the full increase to your tax bill in year one. Instead, the increase is split into three equal annual increments and phased in over the three years until the next reassessment. If a home's assessed value rises from $400,000 to $460,000 (a $60,000 increase) at reassessment, the taxable value typically rises by about $20,000 in each of the following three years rather than jumping the full $60,000 immediately. If a reassessment comes in lower than the prior value, the reduced value generally applies right away rather than being phased in — the phase-in mechanism only smooths out increases.
Since Maryland's 2000 "Truth in Taxation" law, real property has been assessed at 100% of estimated full market value. This differs structurally from states like Arizona (10% assessment ratio) or Georgia (40% assessment ratio) — in Maryland, the assessed value you see on your SDAT notice is meant to represent the whole estimated value of your home, not a fraction of it. The tax bill impact of a high-value home is instead moderated by the phase-in described above and by the Homestead Tax Credit covered next, not by discounting the assessed value itself.
Property owners who believe their SDAT assessment doesn't reflect market value can file a free appeal — SDAT explicitly warns that it never charges a fee for a copy of an assessment worksheet or to file an appeal, and cautions homeowners against third-party solicitations offering to handle appeals for a fee.
Maryland's Homestead Tax Credit, codified at Tax-Property §9-105, is the mechanism that limits how much of a property's year-over-year assessment increase is actually taxable — and it's a credit against the tax on the excess, not a cap on market value itself.
Every county and municipality in Maryland must limit annual increases in taxable assessment to 10% or less. If an assessment increase exceeds that cap, the Homestead Credit is calculated as the tax on the amount above the cap. SDAT's own example: an assessment that rises from $100,000 to $120,000 (a 20% increase) against a 10% local cap generates a credit covering the tax on the excess $10,000 — at a $1.04 rate per $100, that's a $104 credit. The credit only appears in years when your assessment increase actually exceeds your local cap; if growth in your taxable value is below the cap, there's no credit to apply.
The statewide ceiling is 10%, but individual counties and municipalities are free to set a stricter cap in one-percentage-point increments, and many do. Notable examples for 2025-2026: Anne Arundel County caps growth at just 2%, Prince George's County at 3%, Baltimore City and Baltimore County at 4%, and Howard County at 5% — all well below the state's 10% ceiling — while Montgomery County uses the full 10% statewide cap. Because the credit applies separately to the state, county, and municipal portions of your bill, a homeowner in an incorporated town can have three different caps stacked on the same property.
Baltimore City's homestead cap has sat at 4% since the 1990s, but the City Council voted in 2026 to raise it to 5%, beginning with fiscal year 2028 — a reminder that local caps are set by ordinance and can shift, so it's worth checking your specific jurisdiction's current cap rather than assuming it's permanent.
The Homestead Tax Credit applies only to a property that is the owner's principal residence — it doesn't apply to second homes, rental property, or land held for investment. Most Maryland homeowners are automatically enrolled once SDAT confirms owner-occupancy status; if you don't see a Homestead application on file for a recently purchased home, confirming your status with SDAT is worthwhile since new purchases start with no accumulated cap benefit (the assessment resets to the sale-based value).
Separate from the Homestead Tax Credit, Maryland offers a genuine income-based relief program under Tax-Property §9-104 — the Homeowners' Property Tax Credit Program, sometimes called the "circuit breaker" credit because it limits property tax to a set percentage of household income regardless of the property's assessed value.
The program compares your actual property tax bill to a sliding-scale percentage of your income: 0% of the first $8,000 of income, 4% of the next $4,000, 6.5% of the next $4,000, and 9% of all income above $16,000. Whatever your property tax bill exceeds that calculated limit is refunded as a credit. For example, a household with $16,000 in income has a tax limit of $420 — if their actual bill is $990, they receive a $570 credit. The credit is capped at the tax on the first $300,000 of assessed value, so it doesn't scale up for very high-value homes.
Applications are accepted through October 1 each year, but homeowners who apply by April 15 can have the credit applied directly to their initial July tax bill instead of waiting for a refund. New buyers should apply at least 30 days before settlement if they want the credit reflected at closing.
Maryland's most complete property tax relief program isn't income-tested at all — it's tied to military service and disability status. Under Tax-Property §7-208, a veteran who was honorably discharged and has been rated by the U.S. Department of Veterans Affairs as having a permanent, 100% service-connected disability can receive a full exemption from real property tax on their dwelling.
The exemption applies to the veteran's principal residence, including the lot or curtilage and structures reasonably necessary for residential use, such as a garage or utility shed. There is no dollar cap or income test — a qualifying veteran owes $0 in state, county, and municipal real property tax on the exempted home.
If a disabled veteran who was receiving the exemption dies, their surviving spouse continues to receive the same exemption on the same dwelling for as long as they own and reside in it — the benefit doesn't automatically end with the veteran's death.
If a veteran was eligible for the exemption but it wasn't applied to a past tax bill, Tax-Property §7-208(g) provides for mandatory refunds of state, county, and municipal taxes paid during the period the exemption should have applied, with refund requests generally allowed within a 3-year window from the year eligibility began. Applications are filed with SDAT using the Application for Exemption for Disabled Veterans form, along with VA documentation confirming the permanent 100% disability rating.
Because SDAT sets the assessed value but each county sets its own rate, Maryland's effective property tax burden varies more by where you live than by how your home is assessed. The table below shows combined county-plus-state real property tax rates (per $100 of assessed value) for six of Maryland's most populous jurisdictions, along with each county's Homestead Tax Credit cap, based on official Maryland Department of Assessments and Taxation and county government figures. Rates shown are for property outside incorporated municipalities; homes inside a town or city add a separate municipal rate on top.
| County | County Rate (incl. special districts) | State Rate | Combined Rate | Homestead Cap |
|---|---|---|---|---|
| Montgomery | $0.9529 (FY2027) | $0.112 | ~$1.065 | 10% |
| Anne Arundel | $0.977 | $0.112 | ~$1.089 | 2% |
| Baltimore County | $1.100 | $0.112 | ~$1.212 | 4% |
| Howard | $1.250 (county + fire tax) | $0.112 | ~$1.362 | 5% |
| Prince George's | $1.374 (county + M-NCPPC + stormwater) | $0.112 | ~$1.486 | 3% |
| Baltimore City | $2.248 | $0.112 | ~$2.360 | 4% (rising to 5% in FY2028) |
Baltimore City's combined rate of roughly $2.36 per $100 is by far the highest in the state — more than double Montgomery County's rate — reflecting the city's function as both a county-equivalent and a municipality with a smaller commercial tax base relative to its service costs. This gap has fueled ongoing local political efforts (including a 2026 City Council vote raising the homestead cap and a separate "Renew Baltimore" ballot push) aimed at gradually reducing the rate.
Several counties layer additional special-district charges — fire tax, stormwater, mass transit, parks — on top of a base "general fund" rate rather than folding everything into one published county number. Howard County's often-cited $1.044 general county rate, for example, doesn't include its separate $0.206 fire tax; Montgomery County's advertised $0.6706 general fund rate similarly excludes its MCPS supplemental, transit, fire, and recreation district rates, which together push its true combined local rate closer to $0.95 before the state rate is added. Always ask your county's finance office for the full itemized rate that applies to your specific parcel rather than relying on a single headline number.
This example uses Montgomery County's officially adopted FY2027 real property tax rates (Council Resolution No. 20-1141, adopted May 21, 2026, effective July 1, 2026) to walk through a full calculation for a $500,000 home outside any incorporated municipality.
Because Maryland assesses at 100% of market value, this home's SDAT-assessed value is $500,000 (assuming a recent purchase, so there's no accumulated Homestead Credit gap yet between market and taxable value).
| Component | Rate per $100 |
|---|---|
| General County (incl. MCPS & Montgomery College) | $0.6706 |
| MCPS Supplemental Tax | $0.0470 |
| Washington Suburban Transit | $0.0828 |
| Fire Tax (County) | $0.1196 |
| Recreation (County) | $0.0329 |
| County Subtotal | $0.9529 |
| State of Maryland | $0.1120 |
| Combined Rate | $1.0649 |
$500,000 assessed value ÷ $100 × $1.0649 = $5,324.50 per year before any credits.
Montgomery County uses the full 10% statewide Homestead cap. If this home's assessed value later rises faster than 10% in a single year at the next triennial reassessment — say to $580,000, a 16% jump — the Homestead Credit would limit the taxable increase to 10% ($50,000, bringing taxable value to $550,000) rather than the full $80,000 increase, with the credit covering tax on the excess $30,000 until the phase-in and subsequent caps catch the assessment up over time.
If this household's combined gross income is at or below $60,000 and net worth (excluding the home and retirement accounts) is under $200,000, the Homeowners' Property Tax Credit Program could reduce the bill further based on the sliding-scale income formula. If the owner is a veteran with a permanent 100% VA disability rating, the entire $5,324.50 bill would instead be eliminated under the Tax-Property §7-208 exemption.
Your actual Montgomery County bill depends on whether your parcel falls inside a municipality (adding a separate town rate), which of the three triennial assessment groups your property is in, and whether you're currently receiving any Homestead Credit benefit from a prior reassessment. For a parcel-specific number, use SDAT's Real Property Data Search or Montgomery County's online estimated tax tool rather than applying the countywide average rate alone.
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