When are property taxes due in Middlesex County, Massachusetts?

Middlesex County property taxes are due August 1. A second installment is due February 1. This deadline applies to all counties in Massachusetts.

What is the penalty for late property tax payment in Middlesex County, Massachusetts?

The late payment penalty in Middlesex County is 14% interest.

How do I pay Middlesex County, Massachusetts property taxes?

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

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Middlesex County Property Tax Due Date

Massachusetts

2026 Property Tax Due Dates

Installment 1

August 1

Q1 preliminary

Installment 2

February 1

Q3 actual (quarterly billing)

Penalty: 14% interestGrace period: None

Payment Methods

Online, Mail, In-Person

Middlesex County Treasurer

How to Pay

Online

Pay using credit card or e-check

By Mail

Mail check payable to Middlesex County Treasurer

In Person

Visit the Treasurer's office

Other Counties in Massachusetts

Barnstable Berkshire Bristol Dukes Essex Franklin Hampden Hampshire

View all Massachusetts counties →

About Middlesex County

Middlesex County is a county located in the Commonwealth of Massachusetts, United States, one of fourteen in the state. As of the 2020 census, the population was 1,632,002, making it the most populous county in both Massachusetts and New England and the 20th most populous county in the United States. This makes the county the most populous county on the East Coast outside of New York or Florida.

Source: Wikipedia — content available under CC BY-SA 4.0

Related Resources

CountyRollCounty Office Directory

Find the assessor, treasurer & recorder for Middlesex

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Property Tax FAQ Tax Calendar

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