This page helps with Property Tax tasks in Montgomery County, Maryland, including looking up a bill, paying real estate property taxes, estimating taxes for a property, and understanding delinquent tax sale steps.
The main online service is Montgomery County Maryland Real Property Tax, which lets users search bills and view payment options tied to Montgomery County real estate property taxes.
Montgomery County Maryland Real Property Tax
Use the county’s real property tax service to view and pay Montgomery County real estate property tax bills. The search accepts several ways to identify the property.
- 8-digit bill number
- 8-digit account number
- Street address without the street suffix, such as “123 MAIN”
After locating the bill, review the balance and choose the payment method that fits your situation.
- Open the view and pay Montgomery County real estate property tax bills service.
- Enter the bill number, account number, or street address in the search field.
- Select the matching bill and review the payment information before submitting.
- Confirm that all payment details are correct before scheduling payment.
Payment is not considered paid until funds clear the County’s bank account.
Property tax payment options and fees
Montgomery County lists four ways to pay real property taxes. Credit and debit card payments carry a 2.3% fee, and that fee is not collected by Montgomery County and is not refundable.
| Payment method | How to pay | Accepted payment types |
|---|---|---|
| Online | Use the real property tax online payment service | Electronic check with no fee; credit or debit card with a 2.3% fee |
| Phone | Call (240) 777-8898 | Electronic check with no fee; credit or debit card with a 2.3% fee |
| In person | Go to 27 Courthouse Square, Suite 200, Rockville, MD 20850 | Check payable to “Montgomery County Government MD,” credit or debit card with a 2.3% fee, or cash |
| Mail checks with the payment slip to Montgomery County MD, PO BOX 824845, Philadelphia, PA 19182 | Check payable to “Montgomery County Government MD” |
Montgomery County does not accept money orders for these payment options.
Payment posting and due-date rules
Montgomery County does not honor postmark dates. Payments are posted as received, so the payment must be received by the due date.
Credit card, e-check, wire transfer, and bill pay processing may extend into early October for payments due by September 30 and into early January for payments due by December 31.
If a recent payment is not reflected, first check with the financial institution. Balance updates may take up to 72 hours. If the payment has not been applied to the property tax bill after 10 days, contact MC311 to place a service request.
Estimated real property tax
The estimate real property tax and non-tax charges tool lets users enter an address or account number to estimate what a new owner will pay in the first full fiscal year of ownership.
The estimate may include real property tax, other non-tax charges, and any special assessment, special tax, fee, or charge if the property is in a development tax district or proposed development tax district.
- Account number from the property tax bill sent by the County every July
- Street address without suffixes or street types, such as avenue, street, or lane
The estimate uses the next fiscal year’s phase-in value if known, otherwise the current fiscal year’s phase-in value. It also uses current fiscal year tax rates and does not include property tax credits such as homestead, homeowners, income tax offset, or senior credits.
Tax lien sale information
Montgomery County’s tax sale program is used to collect unpaid and delinquent property taxes. The County states that all unpaid taxes on real property are a lien on the property from the date they become due until paid.
The review tax sale information and procedures page explains the annual public sealed bid sale, notice process, redemption steps, and foreclosure timing for tax sale certificates.
For Levy Year 2025, the tax sale is scheduled for Monday, June 8, 2026, between 8:00 a.m. and 2:00 p.m. Eastern Time at the Division of Treasury, Department of Finance, 27 Courthouse Square, Suite 200, Rockville, Maryland 20850.
Tax sales are complex proceedings, and Montgomery County recommends seeking legal advice before participating in the annual tax sale.
Delinquent taxes and redemption basics
Annual billing accounts become overdue and in arrears on October 1. Semi-annual billing accounts become overdue and in arrears on October 1 and January 1. Interest and penalty accrue at 1 and 2/3 percent per month or fraction of a month until paid in full.
Property owners or other persons with an estate or interest in property sold at tax sale may redeem the property tax lien until the right of redemption is finally foreclosed by order of the Circuit Court.
To redeem a property tax lien, the owner must determine the redemption amount, obtain any required release from the certificate holder, and pay the Collector the redemption amount plus taxes in arrears after the tax sale. Redemption payment must be made by certified check, cashier’s check, or cash to Montgomery County.
Property tax contacts
Use these Montgomery County contacts for property tax payment questions, service requests, estimates, and tax sale matters.
-
Montgomery County real property tax phone payment
Phone: (240) 777-8898 -
MC311 Contact Center, 27 Courthouse Square, Rockville, MD 20850
Hours: Monday – Friday, 7 a.m. – 7 p.m.
Phone: (240) 777-0311 -
Office of Consumer Protection
Phone: (240) 777-3636
Fax: (240) 777-3768
Email: [email protected] -
Montgomery County Division of Treasury, Tax Sale Administrator, 27 Courthouse Square, Suite 200, Rockville, MD 20850
Phone: (240) 777-0311
Common questions
Where can I look up and pay a Montgomery County property tax bill?
Use the county’s real property tax service to search by 8-digit bill number, 8-digit account number, or street address without the street suffix.
Is there a fee to pay Montgomery County property taxes online?
Electronic check payments have no fee. Credit and debit card payments have a 2.3% fee that is not collected by Montgomery County and is not refundable.
Does Montgomery County use postmark dates for property tax payments?
No. Montgomery County posts payments as received and does not honor postmark dates, so payments must be received by their due dates.
What should I do if my recent property tax payment is not showing?
Check with your financial institution first because a balance update may take up to 72 hours. If the payment has not been applied after 10 days, contact MC311 to place a service request.
Can I estimate property taxes before buying a property?
Yes. Montgomery County provides an estimated real property tax tool that accepts an account number or street address and estimates property tax plus other non-tax charges for the first full fiscal year of ownership.
When is the Montgomery County tax sale for Levy Year 2025?
The Levy Year 2025 tax sale is scheduled for Monday, June 8, 2026, between 8:00 a.m. and 2:00 p.m. Eastern Time.