The Most Northeastern City in the United States.

Tax Assessment

Caribou Municipal Building
25 High Street
Caribou, Maine 04736
Phone: (207)493-3324
Menu Option #3
Fax: (207)498-3954
E-mail: taxassessor 


 Trio Assessing Data

Basic Search Trio Caribou

General Tax Information

Tax Rate 2018: 23.7

Interest Begins: October 1

Interest Rate: 8%

Fiscal Year: January 1 – December 31

Assessment Date: April 1

Commitment Date: July 2, 2018

Assessment Ratio: 100%

Historical Mil Rate and Valuation Information


The office is located in the Caribou Municipal Building at 25 High Street. Assessment information is available including tax maps, valuation listings, property record cards, aerial photos, commitment books and real estate transfer tax forms. These may be examined during regular business hours and copies are available for a reasonable fee.

Department Staff:

Penny Thompson, CMA-III

Tax Assessor
Building Official

Tony K. Michaud, CMA

Deputy Tax Assessor
Deputy Building Official

Property Tax Relief

Certain classes of property are exempt from taxation within the state statutes (examples: government property, churches) and the Maine State Legislature has also granted property relief to individuals and businesses through exemptions, current use programs and reimbursements. The amount of tax relief provided by these programs change over time. All exemptions must be factored by the City of Caribou’s certified ratio (currently 100%). Forms are available online and at the office. Applications for real estate tax relief are due April 1 of the tax year. Forms received after April 1 will be considered for the next year.

Form Downloads

Real Estate Exemptions:

Real Estate Current Use:

Real Estate Statutory Exemption:

Business Personal Property:

More information is available at the Maine Revenue Services website:

Abatement Application:

Commitment Books 

2018 Real Estate Commitment Book

2018 Personal Property Commitment Book

2017 Real Estate Commitment Book

2017 Personal Property Commitment Book

2016 Real Estate Commitment Book

2016 Personal Property Commitment Book

2015 Real Estate Commitment Book

2015 Personal Property Commitment Book


Digital Copies of Tax Maps

Online GIS Maps

Maine GeoLibrary Maps


Transfer Tax Declarations


2017 January

2017 February

2017 March

2017 April

2017 May

2017 June

2017 July

2017 August

2017 September

2017 October

2017 November

2017 December

2018 January

2018 February

2018 March

2018 April

2018 May

2018 June

2018 July

2018 August

“Tax Base Talk”

Quarterly Reports to the Caribou City Council

2016 Third Quarter

2016 Fourth Quarter

2017 First Quarter

2017 Second Quarter

2017 Third Quarter

2017 Fourth Quarter

2018 First Quarter

2018 Second Quarter

2018 Third Quarter

Mission Statement

It is the goal of the tax assessment office to identify and appraise property within the City of Caribou and ensure the fairness and equity of all real and personal property values; thoughtfully interpret and comply with statutory laws as mandated by the State of Maine; create and maintain accurate maps used to provide geographic data analysis; process all recorded legal documents in a timely manner to reflect accurate records of property ownership; and to efficiently provide the public and our co-workers with high quality products and services, created in a supportive work environment, encouraging cooperation, honesty, integrity and respect.