Montgomery County MD Property Tax Records: Search Bills, Payments, Assessments, Deeds & Parcel Maps
Montgomery County MD property tax records are easiest to use when you separate tax billing from assessment and deed research. Search the County’s real property tax portal by 8-digit bill number, 8-digit account number, or street address without suffix; use SDAT for free assessment data and deed reference clues; use Maryland Land Records for deeds and liens; and use MCAtlas or the County property map viewer for parcel map context.
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Fastest Way to Search Montgomery County MD Property Tax Records
Which Montgomery County Property Record Do You Actually Need?
Use this table first. It prevents the most common mistake: searching deeds when you only need tax balance, or searching a tax bill when you need ownership transfer proof.
| Your Question | Best Place to Start | Search With | What You Get |
|---|---|---|---|
| What is my property tax balance? | Montgomery County Real Property Tax portal | 8-digit bill number, 8-digit account number, or street address without suffix | Tax bill, balance, payment options, processing notes. |
| What is the assessed value? | Maryland SDAT Real Property Search | Address, street name, account identifier, or map reference | Assessment data, property account ID, owner section and deed reference clues. |
| Can I view the deed? | Maryland Land Records / MDLandRec | County, book/page, owner name, deed reference | Deeds, mortgages, liens and other land record documents. |
| Where is the parcel on a map? | MCAtlas / County Property Map Viewer | Address or parcel context | Parcel layer, lot/block annotations, GIS map context. |
| Is there a tax lien or tax sale risk? | Department of Finance / Treasury | Bill/account number, owner, property address, delinquent year | Delinquent balance, interest/penalty, lien/tax sale status guidance. |
How to Search Montgomery County Real Property Tax Bills Online
Use this route when you need current balance, payment status, annual bill, installment bill, or payment options. It is the official County tax-bill portal, not a third-party property lookup site.
8-digit bill number
Best when you have the printed bill or escrow/lender document in front of you.
8-digit account number
Best repeat-use search key for the same property tax account.
No street suffix
County example format is like “123 MAIN,” not “123 Main Street.”
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Prepare the right search detailBill number and account number are cleaner than address.
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Use the 8-digit bill number or 8-digit account number when available. If using address, remove street suffixes and enter a clean search such as “123 MAIN.”
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Open the official real property tax portalUse the County portal before entering payment details anywhere.
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Step 1: Open the official portal. Step 2: enter bill number, account number, or address without suffix. Step 3: confirm the exact property. Step 4: review balance, installment status, payment methods, and processing notes. Start here: Montgomery County Real Property Tax Portal.
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Check posting and processing carefullyRecent payments may not show immediately.
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The County notes that recent payments may take up to 72 hours for the balance to update, and payment processing around September 30 and December 31 may extend into early October or early January.
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Save proof before leaving the portalUseful for escrow, refinance, sale, duplicate payment and delinquency disputes.
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Save account number, bill number, tax year, payment amount, confirmation number, payment method and date. If a payment still has not applied after 10 days, Montgomery County says you may contact MC311 and place a service request.
How to Pay Montgomery County MD Property Taxes Correctly
Montgomery County offers online, phone, in-person and mail payment routes. The key rule is simple: payment is not considered paid until funds are received and cleared, and postmarks are not honored.
No fee
Electronic check is listed as no-fee for online payment.
2.3%
Credit/debit card online or in person is listed at 2.3% service fee.
2.45%
Phone payment card fee is listed at 2.45%; phone number is 240-777-8898.
No postmark rule
The County does not honor postmark dates; payments are posted as received.
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Pick annual or semi-annual scheduleDue dates depend on bill schedule.
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Semi-annual tax bills are due September 30 for the first installment and December 31 for the second installment. Supplemental and revised tax bills are generally due 30 days from the bill date.
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Use the official payment routeOnline and phone support e-check and card payments.
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Online: use Real Property Tax Portal. Phone: call 240-777-8898. In-person: 27 Courthouse Square, Suite 200, Rockville, MD 20850. Online and phone e-check is listed as no-fee; card fees differ by method.
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Mail only with the payment slipWrong mail handling can create late posting.
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Make check payable to “Montgomery County Government MD” and mail with the payment slip to: Montgomery County, MD, P.O. Box 5561, Binghamton, NY 13902-5561. The County notes that money orders are not accepted.
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Do not wait for the last mail dayCounty uses received date, not postmark date.
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Montgomery County states that it does not honor postmark dates. If mailing near September 30 or December 31, allow enough time for the payment to be received and processed before the due date.
How to Use Maryland SDAT for Montgomery County Assessment Records
Use SDAT when you need assessment data, property account identifier, deed reference clues, property characteristics and official Maryland assessment information. SDAT is not the County tax-bill payment portal.
Address / street / account / map
SDAT says you can search by address, street name, account identifier or map reference.
No owner-name search
SDAT says you cannot search by owner name, town, neighborhood, subdivision or ZIP code.
Montgomery = 16
In SDAT account identifiers, Montgomery County is listed as county code 16.
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Open SDAT Real Property SearchUse it for assessment records and deed reference clues.
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Step 1: Open the SDAT search. Step 2: select Montgomery County. Step 3: search by address, street name, account identifier or map reference. Step 4: review assessment and owner-information sections. Start here: Maryland SDAT Real Property Search.
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Format address searches correctlySDAT gives specific search tips.
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Do not use street directions such as North or West, and do not use street suffixes such as Street, Avenue or Way. If needed, truncate a street name with an asterisk, or try leaving off the street number to confirm the street spelling.
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Copy the deed referenceThis helps you find the actual deed later.
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SDAT can show deed reference numbers under the owner-information section. Maryland Courts explains that deed references are often book/page or liber/folio clues used to find the deed in land records.
When Montgomery County Tax Records Are Not Enough
A paid tax bill does not prove clean title. Use Maryland Land Records when you need deeds, mortgages, liens, powers of attorney, leases affecting land, or ownership-transfer documents.
Deeds
Maryland Courts says deeds are public information and can be viewed online through MDLandRec.
Mortgages and liens
Land Records can include deeds, mortgages, liens, powers of attorney and certain leases.
50¢ per page
Maryland Courts lists document copy cost at 50¢ per page when requesting copies.
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Get the deed reference from SDAT firstBook/page clues reduce search time.
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Search SDAT for the property and look for deed reference information in the owner section. Then use that book/page or liber/folio clue in Maryland Land Records.
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Open Maryland Land RecordsFree account required for online deed viewing.
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Step 1: Create or log into a free Maryland State Archives account. Step 2: select Montgomery County. Step 3: search by book/page or index details. Step 4: review the document image. Start here: Maryland Land Records / MDLandRec.
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Search liens carefullySome liens are not in land records only.
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Maryland Courts notes that only some liens are recorded in land records. Court judgments may need Maryland Case Search, and unpaid taxes or municipal charges may need the finance office.
How to Use Montgomery County Parcel Maps and MCAtlas
Use GIS for parcel layer context, lot/block annotations, map layers and property location research. GIS is useful for orientation, but it is not a legal survey or title opinion.
Parcel map viewer
MCAtlas includes County map layers and parcel-related information for map research.
Parcel GIS layer
Montgomery Planning says its GIS team maintains the parcel GIS layer for Montgomery County.
Not a survey
Use recorded plats, surveys and professional review for boundaries, easements and title issues.
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Start with tax or SDAT detailsGIS works better when you know the property.
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Get address, account number, property ID or map reference from the tax portal or SDAT before using GIS. This reduces wrong-parcel matches.
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Open the official parcel viewerUse it for visual parcel context.
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Use the County property map viewer or MCAtlas to search an address and identify property information. Start here: Montgomery County Property Map Viewer or MCAtlas.
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Use Planning GIS for parcel-layer contextGood for downloaded data and map research.
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Montgomery Planning’s GIS page explains that the parcel GIS layer can be downloaded from the Data Download Hub or viewed on MCAtlas. Official GIS page: Montgomery Planning GIS and Mapping.
What Happens If Montgomery County Property Taxes Are Late?
Late property taxes can become expensive quickly. Verify delinquent balances directly with the County tax portal and Department of Finance before buying, refinancing, selling or sending a late payment.
| Issue | What It Means | What to Do |
|---|---|---|
| Payment posted late | County does not honor postmark dates; payments are posted as received. | Pay early enough for funds to clear before the due date. |
| Recent payment not showing | Balance may take up to 72 hours to update after payment. | Check your bank/processor first; contact MC311 if not applied after 10 days. |
| Delinquent bill | Interest and penalty may accrue at 1 2/3% per month on unpaid balance. | Verify payoff with Department of Finance before paying. |
| Tax lien sale risk | Unpaid real property taxes constitute a lien, and the County tax sale program helps collect unpaid delinquent taxes. | Use County tax sale information and contact Finance before purchase or payoff. |
| Title or lien question | Tax records alone do not show every lien or ownership issue. | Check MDLandRec, Maryland Case Search and title review as needed. |
Montgomery County Department of Finance / Treasury Office
Treasury Division — Property Tax Section
Address: 27 Courthouse Square, Suite 200, Rockville, MD 20850
Phone: 240-777-0311
Fax: 240-777-8947
Cashier hours: Monday-Friday, 8:00 AM-4:30 PM, excluding County, State and Federal holidays.
Before You Call or Visit
Prepare: 8-digit bill number, 8-digit account number, property address, tax year, payment method, confirmation number, bank-clearing proof, escrow/lender detail and whether the bill is annual, semi-annual, supplemental or revised.
If Your Montgomery County Property Tax Search Fails
| Problem | Likely Cause | Fix |
|---|---|---|
| No County tax result by address | Street suffix, direction, punctuation or address variation. | Search like “123 MAIN” without suffix; use bill/account number if available. |
| Payment not reflected | Processing delay or funds not cleared. | Wait up to 72 hours, check financial institution, then contact MC311 if not applied after 10 days. |
| Late despite mailing | County does not honor postmark dates. | Use online e-check, phone, in-person or mail early enough for received-date posting. |
| Cannot search SDAT by owner name | SDAT does not support owner-name search. | Search SDAT by address, street name, account identifier or map reference. |
| Need deed but only tax bill found | Tax portal does not provide full land records. | Use SDAT deed reference, then MDLandRec for deed images. |
| Map boundary dispute | GIS parcel layer is not a legal survey. | Use plats, deeds, surveys and professional review. |
Montgomery County MD Property Tax Records FAQs
QHow do I search Montgomery County MD property tax records online?▾
Use the Montgomery County Real Property Tax portal. Search by 8-digit bill number, 8-digit account number, or street address without street suffix, such as “123 MAIN.”
QWhen are Montgomery County MD property taxes due?▾
Semi-annual property tax bills are due September 30 for the first installment and December 31 for the second installment. Supplemental and revised tax bills are generally due 30 days from the bill date.
QDoes Montgomery County honor postmark dates for property tax payments?▾
No. Montgomery County states that it does not honor postmark dates. Payments are posted as received, so make sure payments are received by the due date.
QWhat are Montgomery County online property tax payment fees?▾
Online electronic check is listed as no-fee. Online or in-person credit/debit card payment is listed at 2.3%, and phone card payment is listed at 2.45%.
QWhere do I mail Montgomery County MD real property tax payments?▾
Mail checks with the payment slip to Montgomery County, MD, P.O. Box 5561, Binghamton, NY 13902-5561. Make checks payable to “Montgomery County Government MD.” Money orders are not accepted.
QHow do I find Montgomery County assessment records?▾
Use Maryland SDAT Real Property Search, select Montgomery County, and search by address, street name, account identifier or map reference. SDAT does not allow owner-name, town, neighborhood, subdivision or ZIP-only search.
QWhere do I find Montgomery County deeds?▾
Use Maryland Land Records at MDLandRec. Deeds can be viewed online for free, but you must create a Maryland State Archives account. SDAT can help you find deed reference numbers.
QWhat happens if Montgomery County property taxes are late?▾
Delinquent bills are subject to interest and penalty at 1 2/3% per month on the unpaid balance until paid in full. Unpaid real property taxes may also create lien and tax sale risk.
QWhere can I view Montgomery County parcel maps?▾
Use MCAtlas or the Montgomery County Property Map Viewer. Montgomery Planning says its GIS team maintains the parcel GIS layer, which can be viewed on MCAtlas or downloaded from the Data Download Hub.
QIs Property-Recordss.org the official Montgomery County tax website?▾
No. Property-Recordss.org is an independent informational guide. Always verify tax bills, payments, due dates, fees, assessments, deeds, liens and maps directly with official Montgomery County, Maryland SDAT or Maryland court sources.