How is Maryland property tax calculated?

Maryland property tax has two parts on every bill: a uniform statewide rate of $0.112 per $100 of assessed value, plus your county's real-property rate (which ranges from about $0.69 to $2.25 per $100). You multiply your assessed value divided by 100 by the sum of those two rates. Municipalities inside a county may add a third rate not shown here.

What assessed value does Maryland use?

The Maryland State Department of Assessments and Taxation (SDAT) assesses property at 100% of full cash, or market, value. Properties are reassessed on a three-year cycle and any increase is phased in over those three years. Because the ratio is 100%, your assessed value is normally the same as the market value you enter.

Which Maryland county has the highest property tax?

Baltimore City has by far the highest rate, at about $2.248 per $100 of assessed value, more than double most counties. Talbot and Worcester counties are among the lowest, near $0.69 and $0.85 per $100. The combined state-plus-county rate is what determines your bill, and this calculator includes all 23 counties plus Baltimore City.

How does the Homestead Tax Credit affect my bill?

Maryland's Homestead Tax Credit caps how much the taxable assessment on your owner-occupied principal residence can rise year over year — the state cap is 10%, and counties may set a lower cap. It does not lower your rate, but it limits how fast your taxable value can grow. A separate, income-based Homeowners' Property Tax Credit can reduce the bill further. Neither credit is modelled here.

Is this property tax estimate exact?

No, it is an estimate. It uses current state and county real-property rates and assumes a 100% assessment ratio. It does not include municipal (town or city) rates, special district levies, the Homestead or Homeowners' credits, or exemptions. Confirm your exact bill with your county finance office and dat.maryland.gov.

Maryland Property Tax Estimator

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This estimator shows your likely annual Maryland property tax from a home’s value, combining the two rates that appear on every Maryland bill: the uniform state rate and your county’s real-property rate.

How it works

Maryland property tax is charged per $100 of assessed value:

assessed value = market value × assessment ratio (100% in Maryland)
state tax  = (assessed ÷ 100) × $0.112
county tax = (assessed ÷ 100) × county rate
annual tax = state tax + county tax

The state rate is a flat $0.112 per $100 statewide. The county rate varies widely — from about $0.69 per $100 in Talbot County to $2.248 per $100 in Baltimore City. The calculator adds the two together and applies them to your assessed value.

Maryland assessment details

Maryland’s SDAT assesses property at 100% of full cash value, so the value you enter is normally both the market and assessed value. Reassessments happen on a three-year cycle, with increases phased in over those years. Owner-occupied homes may benefit from the Homestead Tax Credit, which caps the annual growth of the taxable assessment (state cap 10%; counties may set lower), and from the income-based Homeowners’ Property Tax Credit — both reduce the bill but are not included in this estimate.

Example

A $400,000 home in Montgomery County (county rate about $0.9921 per $100):

Combined rate = $0.112 + $0.9921 = $1.1041 per $100
Annual tax = ($400,000 ÷ 100) × $1.1041 = about $4,416
Monthly escrow ≈ $368

Note: This excludes municipal rates, special districts, and the Homestead or Homeowners’ credits. Verify your exact assessment and rates with your county and dat.maryland.gov.