When Do Property Tax Bills Come Out in Maryland? Key Dates and Deadlines
TL;DR
Maryland assessment notices arrive in December-January. You have 45 days from the notice date to file an appeal with the Supervisor of Assessments. Tax bills are mailed in July, with the first installment due September 30 and the second due December 31. Maryland reassesses on a triennial cycle, with one-third of properties reassessed each year. If your assessment increased significantly, appeal within 45 days of the notice.

Maryland divides all properties into three groups. Here is what you should know about when Do Property Tax Bills Come Out in Maryland? Key Dates and Deadlines.
If your deadline has already passed, check whether your state has a secondary appeal window. Some states allow filing with a higher court or board after the initial deadline. If no secondary option exists, start preparing now for next year's appeal so you are ready the moment your next notice arrives.
Maryland Property Tax Calendar
| When | What Happens | Your Action |
|---|---|---|
| January 1 | Assessment date | Property valued as of this date |
| December-January | Assessment notices mailed | Review immediately |
| 45 days from notice | Appeal deadline (Supervisor of Assessments) | File appeal if overassessed |
| July 1 | Tax year begins; bills mailed | Review the bill |
| September 30 | First installment or full payment due | Pay |
| December 31 | Second installment due | Pay |
Deadlines in property tax are not flexible. Miss the filing window by even one day and you lose your right to appeal for the entire year. That is another 12 months of overpaying with no recourse. As soon as you receive your assessment notice, find the deadline and mark it on your calendar with a reminder set for two weeks before.
If your deadline has already passed, check whether your state has a secondary appeal window. Some states allow filing with a higher court or board after the initial deadline. If no secondary option exists, start preparing now for next year's appeal so you are ready the moment your next notice arrives.
Maryland's Triennial Assessment Cycle
Maryland divides all properties into three groups. Each year, one group is fully reassessed. Your property is reassessed every three years. In the two "off" years, the value may be phased in gradually (one-third of the increase per year) to smooth out large jumps.

This phased approach means that even in your reassessment year, you may not see the full value increase on your first bill. The increase is spread over three years.
Understanding this topic fully means looking at both the big picture and the specific details that apply to your situation. Every property is different, and the strategies that save the most money are the ones tailored to your particular home, location, and circumstances.
Start by gathering the basic facts about your property: its assessed value, the tax rate in your jurisdiction, and any exemptions currently applied. Then compare your situation to what is available. You may find opportunities for savings that you did not know existed.
How to Appeal in Maryland
- File with the Supervisor of Assessments within 45 days of the notice. This is an administrative appeal handled by the local assessment office.
- Property Tax Assessment Appeal Board. If the Supervisor denies your appeal, file with the PTAAB within 30 days of the decision.
- Maryland Tax Court. Further appeals go to the Maryland Tax Court within 30 days of the PTAAB decision.
Maryland assesses at 100% of fair market value. Compare your assessed value directly to what comparable homes have sold for recently.
The appeal process is designed to be accessible to regular homeowners, not just attorneys and tax professionals. You do not need to hire anyone to file. The key is preparation. Gather your evidence before the hearing, organize it clearly, and practice presenting your case in under 10 minutes. Lead with comparable sales, then cover any property record errors, and finish with photos or documentation of condition issues.
Keep your tone professional and factual. Review boards respond to evidence, not complaints. If you walk in with 3 strong comparable sales and a calm, organized presentation, you are already ahead of most appellants.
Maryland Tax Credits and Exemptions
| Program | Benefit | Eligibility |
|---|---|---|
| Homeowners Tax Credit | Credit based on income (can be substantial) | Income under $60,000 (adjusted) |
| Homestead Tax Credit | Caps assessment increases at 10% per year | Primary residence (automatic) |
| Senior Tax Credit | Additional credit for eligible seniors | Age 65+, income limits |
| Disabled Veteran Exemption | Exemption on dwelling and up to $750,000 | 100% service-connected disability |
Maryland's Homestead Tax Credit is particularly important. It automatically limits assessment increases to 10% per year for owner-occupied homes. Some counties and municipalities have adopted even lower caps (as low as 0-4% in some areas). If the Homestead Credit is not appearing on your bill, contact your local assessment office.
The Homeowners Tax Credit is income-based and can provide significant relief for homeowners with modest incomes. Apply annually through the State Department of Assessments and Taxation (SDAT) website.
Do not assume you are automatically enrolled. Most exemptions require an application, and many homeowners lose years of savings simply because they never filed. Contact your county assessor's office or check their website for the application form. Bring proof of eligibility (age verification, disability documentation, veteran status, etc.) and file well before the deadline.
If you qualify for multiple exemptions, apply for all of them. In most jurisdictions, exemptions stack. A senior homeowner who is also a veteran can often claim both exemptions simultaneously, doubling the savings.
County-Specific Details
Maryland has 23 counties plus Baltimore City, each with its own tax rate. Rates range from about $0.60 to over $1.10 per $100 of assessed value at the county level, with additional municipal and state rates on top.
Some of the highest-rate jurisdictions include Baltimore City, Prince George's County, and Allegany County. Lower rates are found in Worcester County, Talbot County, and Queen Anne's County.
Understanding this topic fully means looking at both the big picture and the specific details that apply to your situation. Every property is different, and the strategies that save the most money are the ones tailored to your particular home, location, and circumstances.
Start by gathering the basic facts about your property: its assessed value, the tax rate in your jurisdiction, and any exemptions currently applied. Then compare your situation to what is available. You may find opportunities for savings that you did not know existed.
Your Next Steps
Here is what to do right now:
- Check your state's deadline. Use the tables above to find your state's specific dates. If your deadline is within the next 60 days, start preparing immediately.
- Open your assessment notice. If you received one recently, read it today. Do not set it aside. Check the assessed value, property details, and the appeal deadline printed on it.
- Gather comparable sales. If your assessed value looks too high, pull 3 to 5 recent sales of similar homes in your area. This is the single most important piece of evidence for any appeal.
- File for exemptions you have not claimed. Many homeowners miss exemptions simply because they never applied. Check what is available in your state and file before the deadline passes.
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Frequently Asked Questions
What is the Homestead Tax Credit cap in my area?
The state cap is 10%, but many counties and municipalities have adopted lower caps. Check SDAT's website for your specific jurisdiction's cap rate.
Why does my notice show a "phased-in" value?
Maryland spreads triennial reassessment increases over three years. If your reassessment increased by $60,000, you may see $20,000 added each year for three years rather than the full amount at once.
Can I appeal in an off year?
You can appeal whenever you receive a notice showing a value change. In "off" years, you may still receive a notice reflecting the phased-in increase. You can appeal the underlying full market value determination.
Do not assume you are automatically enrolled. Most exemptions require an application, and many homeowners lose years of savings simply because they never filed. Contact your county assessor's office or check their website for the application form. Bring proof of eligibility (age verification, disability documentation, veteran status, etc.) and file well before the deadline.
If you qualify for multiple exemptions, apply for all of them. In most jurisdictions, exemptions stack. A senior homeowner who is also a veteran can often claim both exemptions simultaneously, doubling the savings.
Maryland: 45 Days From Your Notice
When the notice arrives in December or January, the clock starts. PropertyTaxFight builds your evidence packet with comparable sales. $79 one-time. Get your evidence packet and file within 45 days.
Understanding this topic fully means looking at both the big picture and the specific details that apply to your situation. Every property is different, and the strategies that save the most money are the ones tailored to your particular home, location, and circumstances.
Start by gathering the basic facts about your property: its assessed value, the tax rate in your jurisdiction, and any exemptions currently applied. Then compare your situation to what is available. You may find opportunities for savings that you did not know existed.