Assessing

Watertown Tax Classification Fiscal Year 2026

View the FY26 Watertown Classification Presentation (PDF)

Watertown Tax Rates Fiscal Year 2025

July 1, 2024 - June 30, 2025

• Residential Rate: $11.68
• Commercial Rate: $22.83
• Residential Exemption Value Exclusion: $317,458
• Residential Exemption Tax Savings: $3,707.91
• Historic Tax Rates (PDF)
• Real Estate Database: Property Assessment Data

Residential Tax Exemption

The Residential Tax Exemption reduces the bill of qualified taxpayers by excluding a fixed value from the annual assessment. In Fiscal Year 2025 the Residential Exemption saved qualified taxpayers $3,707.91.

Motor Vehicle Excise Tax Abatements & Information

Please visit the Motor Vehicle Excise page for information as well as the online abatement application.

Boat Excise Tax

Please visit the State of Massachusetts website to learn more about the Boat Excise Tax - Massachusetts Environmental Police.

Change of Tax Bill Mailing Address

Please use the Change of Mailing Address mailbox if you need to change the mailing address of your tax bill. 

Parcel Inventory

The Fiscal Year 2025 (XLXS) parcel listing shows the ownership and assessment information as of December 2024. This document may be filtered down to meet your research needs. Please refer to Property Type Classification List (PDF) for information in regard to Land Use Codes. 

Personal Property & Other Information

For information regarding Personal Property Tax, abatement instructions, and recent sales view Personal Property and Other Information.