Howard County Property Tax: Rates, Credits & Appeals

Howard County property tax is charged at $1.044 per $100 of assessed value, on top of a Maryland state rate of $0.112 per $100. On a home assessed at $500,000, that comes to roughly $5,780 a year before credits, and your bill will also carry a Watershed Protection Fee that is not calculated from the assessment. What you actually pay depends on how your home is assessed, which credits you claim, and whether you catch the deadlines.

How Your Assessment Is Set

The Maryland State Department of Assessments and Taxation (SDAT) appraises every property in the state and certifies a value to Howard County, which then applies the tax rate.¹ Local assessors inspect properties and compare recent sales of similar homes to arrive at fair market value. State law requires this reassessment once every three years.²

When your value goes up, the increase is phased in over three years: one-third in year one, two-thirds in year two, the full amount in year three. A $30,000 increase in market value raises your taxable assessment by $10,000 a year rather than all at once.³

Decreases are treated differently. If SDAT finds your property lost value, the full reduction applies immediately with no phase-in.

Calculating What You Owe

The base math is simple. Multiply your phased-in assessment by $1.044 per $100 for the county portion, then add $0.112 per $100 for the state portion. A home with a phased-in assessment of $400,000 owes $4,176 in county tax plus $448 in state tax, for a total of $4,624 before any credits or fees.⁴ The state rate applies uniformly to residential and commercial property statewide.⁵

Watershed Protection Fee

Every Howard County tax bill also carries a Watershed Protection Fee for stormwater management. It is based on property type and lot size, not on assessed value:

Townhouses, apartments, and condominiums pay $40 a year.
Single-family homes on a quarter acre or less pay $115 a year.
Single-family homes on more than a quarter acre pay $225 a year.

Owners who install qualifying stormwater practices can apply for a credit against the fee, but the application has to reach the county before April 1 to affect that year’s bill.⁶

When Payment Is Due

Howard County’s fiscal year runs from July 1 through June 30, and bills go out at the start of that cycle. Anyone living in their principal residence is automatically placed on a semi-annual plan. You can opt out by paying in full by September 30.⁷

Annual payment or first semi-annual installment: due September 30, delinquent October 1.
Second semi-annual installment: due December 31, delinquent January 1.
Pay the full General County Real Property Tax during July and you earn a 0.5% discount.

The July discount doesn’t apply to the state portion or to special fees, but on a $5,000 county bill it saves about $25. Howard County accepts payments online, by mail, or in person. Mailed payments should include the coupon from the bottom of the bill so the amount is credited to the right account.⁷

Credits That Can Lower Your Bill

Several programs can meaningfully reduce what you owe. Each has its own rules and its own application.

Homestead Tax Credit

The Homestead Tax Credit caps how much your taxable assessment can rise in a single year. Maryland’s statewide cap is 10%, but Howard County uses a tighter 5%.⁸ If your phased-in assessment would otherwise jump 8%, the credit holds the taxable increase to 5%.

You have to file a one-time application with SDAT establishing that the property is your principal residence. No renewal is needed as long as you keep living there.⁹

Homeowners’ Property Tax Credit

This state program caps property taxes at a set percentage of your gross household income. Households with combined gross income up to $60,000 are eligible, and the state credits the difference above the threshold. Applications go through SDAT annually and require documentation of all household income, including Social Security and tax returns.¹⁰¹¹

Howard County Senior Tax Credit

Howard County offers a supplemental credit for seniors, with eligibility tied to household income relative to the federal poverty level and to a net worth cap. Under CB 60-2025, the maximum allowable net worth rose from $500,000 to $800,000, and beginning in tax year 2026 the county adjusts that cap annually for inflation using the Baltimore-Columbia-Towson Consumer Price Index. The Department of Finance publishes updated thresholds by the end of February each year.¹²

Disabled Veteran Property Tax Credit

Howard County grants a sliding-scale credit to disabled veterans based on service-connected disability rating:

A rating of 75% or higher qualifies for a 50% credit against county property taxes.
A rating of 50% to 74% qualifies for a 25% credit against county property taxes.

The veteran’s federal adjusted gross income for the prior year must not exceed $100,000, and the property must be the veteran’s legal residence, occupied by no more than two families. Veterans with a 100% permanent and total service-connected disability may qualify for a full exemption under a separate provision of Maryland law.¹³¹⁴

Appealing Your Assessment

If you think SDAT overvalued your home, Maryland offers three levels of appeal at no cost. Most successful appeals win at the first level, but it helps to know what comes after.

Supervisor’s Level

File within 45 days of the date on your assessment notice. The hearing is informal and typically runs about 15 minutes. You meet with an assessor designated by the local Supervisor of Assessments and exchange information. Bring comparable sales, photos of any condition problems, and your own appraisal if you have one. A written decision follows.¹⁵

Property Tax Assessment Appeal Board

If the Supervisor’s decision doesn’t satisfy you, appeal to the Property Tax Assessment Appeal Board (PTAAB) within 30 days. Each jurisdiction has its own board, staffed by local residents appointed by the Governor. PTAAB operates independently from SDAT.¹⁵

Maryland Tax Court

The final administrative appeal goes to the Maryland Tax Court, filed within 30 days of the PTAAB decision. The hearing is de novo, meaning the court starts from scratch. You must appear in person, and there is no filing fee.¹⁵

Even outside your reassessment year, you can file a petition for review by the first business day of January. If you bought a property between January 1 and July 1, you have 60 days from the transfer date to file an appeal based on your purchase price.¹⁵

What Happens If You Don’t Pay

Penalties for late payment escalate faster than most homeowners expect. Once you’re delinquent (October 1 for the first installment, January 1 for the second), interest and penalties accrue at 1.5% per month on county taxes and fees, and 1.0% per month on the state portion. On a $5,000 bill, that’s roughly $75 a month in county penalties alone.⁷

Homeowners still delinquent on March 1 receive a final legal notice. Additional penalties hit on April 1. From that point on, the county accepts only cash, certified checks, or credit cards. Personal checks are no longer accepted.⁷

Tax Lien Sales

Once you fall at least $250 behind, the unpaid tax becomes a lien on your property, and the county sells that lien as a certificate at public auction. The buyer pays your delinquent taxes and earns interest until you redeem or the buyer forecloses.¹⁶

In Howard County, the redemption interest rate is 6% per year on owner-occupied property and 18% on non-owner-occupied property. Redeeming requires paying the total tax sale amount plus accumulated interest and penalties with certified funds.¹⁷

Foreclosure Timeline

The certificate holder can’t take your home immediately. For owner-occupied properties, they can send a required foreclosure notice and seek reimbursement for legal expenses after seven months from the sale date, and file a foreclosure complaint in the Circuit Court for Howard County after nine months. For non-owner-occupied properties, that shortens to four months.

Redeem within the first seven months (owner-occupied) or four months (non-owner-occupied) and you owe nothing for the certificate holder’s legal expenses. After those windows close, their attorney’s fees become part of the redemption cost. You keep the right to redeem until a court order finally forecloses that right, but the longer you wait, the more expensive it gets.¹⁷¹⁶

1
Maryland Department of Assessments and Taxation. Real Property
2
Maryland General Assembly. Maryland Tax-Property Code 8-104
3
Maryland General Assembly. Maryland Code Tax-Property 8-103
4
Howard County. Frequently Asked Budget Questions
5
Maryland Matters. Board Holds Line on Property Tax Rate Though Bills Will Likely Increase
6
Howard County Stormwater. Watershed Protection Fee
7
Howard County. Real Property Tax
8
Maryland Department of Assessments and Taxation. 2025-2026 Tax Rates and Homestead Credit Caps
9
Maryland Department of Assessments and Taxation. Maryland Homestead Property Tax Credit Program
10
Maryland Department of Assessments and Taxation. Homeowners’ Property Tax Credit Program
11
Maryland OneStop. Homeowners’ Property Tax Credit Application Form HTC (2026)
12
Howard County. Howard County Executive Calvin Ball’s Impactful Age-Friendly Initiatives
13
New York Codes, Rules and Regulations. Maryland Tax-Property Code 9-265 – Dwelling House Owned by Disabled Veteran
14
Maryland Department of Veterans and Military Families. Tax Exemptions
15
Maryland Department of Assessments and Taxation. Assessment Appeal Process
16
Maryland Department of Assessments and Taxation. Office of the State Tax Sale Ombudsman
17
Howard County. Tax Sale