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On June 28, 2024, Town of Bolton staff became aware of an issue with some tax bills being calculated with the previous assessed value and the new mil rate resulting in undervalued tax bills. Further investigation revealed that this affected 556 accounts. Those accounts are being rebilled correctly. Only those 556 affected accounts have a revised deadline of August 30, 2024, to pay without penalty. All other tax bills are due not later than August 1, 2024. Closer investigation also found that the grand list calculations were incorrect, and it is $30,703,164.00 lower than it should be. With the current mil rate and the new grand list valuation the Town will collect approximately $1,000,000.00 more in taxes than is necessary to operate the Town for the current fiscal year. The Board of Selectmen and Finance Committee met on July 8, 2024, to discuss this matter. At their meeting they determined that they would continue to collect taxes based on the proper evaluations and the current mil rate. They also were in consensus that they would like to return funds to taxpayers in excess of the amount approved by taxpayers for this fiscal year. In an effort to determine the best way to accomplish that they formed an ad hoc committee which includes members of both boards. The charge of that committee is to work with the town administrator and town attorney to determine the most effective and efficient way to accomplish that task. They have also been tasked with completely investigating the issue and determining what happened and how to prevent it from occurring again in the future.


The Assessor is charged with the responsibility of valuing and placing assessments upon all Real Estate and Taxable Personal Property located in the Town of Bolton. In accordance with Connecticut General Statutes, the real estate and personal property assessments are compiled in a list known as the Grand List. The completed Grand List is filed with the Town Clerk each year and is used in the process of establishing a mill rate for the fiscal year.

GL 2022 Mill Rate:
Real Estate and Personal Property – 43.82 per thousand of assessment
Motor Vehicles – 32.46 per thousand of assessment
Last Revaluation: 2023

Property Evaluation Database : 
To access online property information by clicking here:   http://gis.vgsi.com/BoltonCT
The assessments are reflective of the 2023 Revaluation.

GL2023 detail

Grand List 2023

Grand List 2023 After BAA

GIS Mapping : 
Please click here for a link to the online GIS Mapping.

Income and Expense forms for the Calendar Year 2023 were mailed in early April.
If you want a copy of any form: 

I & E 2023
I & E for Cell Towers CY 2023


Sales between 10.01.22- 09.30.23
Sales since 10.01.23