When are property taxes due in Montgomery County, Maryland?

Montgomery County property taxes are due July 1. A second installment is due December 1. This deadline applies to all counties in Maryland.

What is the penalty for late property tax payment in Montgomery County, Maryland?

The late payment penalty in Montgomery County is Interest and penalties after grace period.

How do I pay Montgomery County, Maryland property taxes?

You can pay Montgomery County property taxes via Online, mail, in-person.

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Montgomery County Property Tax Due Date

Name: Treasury Division
Address: 27 Courthouse Square, Suite 200, Rockville, MD, 20850, US
Telephone: (240) 777-0311

Maryland

(240) 777-0311

2026 Property Tax Due Dates

Official Source

Installment 1

July 1

Full or first half due

Installment 2

December 1

Second half (if semi-annual)

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Penalty: Interest and penalties after grace periodGrace period: Sept 30 (first) / Dec 31 (second)

Payment Methods

Online, Mail, In-Person

Montgomery County Treasurer

Phone

(240) 777-0311

Office Address

27 Courthouse Square, Suite 200
Rockville, MD 20850

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Office Hours

Mon-Fri 8am - 4:30pm

How to Pay

Online

Pay using credit card or e-check

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By Mail

Mail check payable to Montgomery County Treasurer

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In Person

Visit the Treasurer's office — 27 Courthouse Square, Suite 200, Rockville MD 20850, Mon-Fri 8am - 4:30pm

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Other Counties in Maryland

Allegany Anne Arundel Baltimore Baltimore City Calvert Caroline Carroll Cecil

View all Maryland counties →

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Due dates shown are for reference only. Contact your county treasurer's office to confirm official deadlines before making payments.