Idaho State Tax Commission

About Us

The Tax Commission informs taxpayers about their obligations so everyone can pay their fair share of taxes, and it must enforce Idaho's laws to ensure the fairness of the tax system with those who don't voluntarily comply.

Our Vision

Great people. Helping you. Serving Idaho.

Our Values

Fairness, Accountability, Integrity, Respect

Our Mission

Voluntary tax compliance through innovative customer service, courteous and professional conduct, effective education, and fair administration.

Goals
  • Demonstrating financial stewardship
  • Building stakeholder support
  • Promoting efficiency
  • Empowering great people

Read more in our Annual Reports and Strategic Plans.

Organization

The agency is organized into five divisions. It has offices in Boise and five other locations throughout the state: Coeur d'Alene, Idaho Falls, Lewiston, Pocatello, and Twin Falls. The five divisions are:

  • AUDIT — ensures fairness and consistency of Idaho's tax laws by examining tax returns for potential errors and obtaining tax returns in cases where a return is required to be filed but no return was submitted.
  • COLLECTION — provides taxpayers with education and programs to ensure equitable and fair compliance, as well as payment of unpaid tax debts. The division also oversees field offices around the state.
  • GENERAL SERVICES — consists of Human Resources, Integrated Services, Management Services, Tax Appeals, and Taxpayer Resources. Taxpayer Resources focuses on communication, policy, and outreach and includes Taxpayer Services, which provides taxpayer support by phone, email, and in our Boise office.
  • PROPERTY TAX — appraises public utilities and provides technical assistance and education for Idaho's counties to help them administer the property tax system. The Tax Commission conducts studies each year to determine whether counties are in compliance with state guidelines for proper administration of the property appraisal and taxing system.
  • REVENUE OPERATIONS — processes tax returns and payments.

Commissioners

The Tax Commission is an executive branch agency, which means it operates under the guidance of the governor of the state of Idaho. The governor appoints the four tax commissioners, and their appointments must be confirmed by the state Senate. The commissioners serve six-year terms. Besides presiding over specific tax types and areas of the agency, the tax commissioners also sit as the State Board of Equalization for two weeks in August. In that capacity, they hear and decide appeals for operating property — property such as railroads and utilities, which cross county lines.

Chairman Tom Harris

Harris
  • First appointed: April 26, 2019
  • Current term ends: April 26, 2025
  • Taxes:
    • Business Income
    • Multistate Income
    • Travel & Conventions
    • Auditorium Districts
  • Management:
    • Revenue Operations
    • Taxpayer Resources
    • Human Resources
    • Management Services / Budget

Commissioner Tom Katsilometes

Katsilometes
  • First appointed: March 25, 2005
  • Current term ends: March 8, 2023
  • Taxes:
    • Property Tax
    • Mine License
    • Kilowatt Hour
    • Beer, Wine, Cigarette, Tobacco
    • Motor and Special Fuels
    • Transfer Fee
  • Management:
    • Property Tax Division

Commissioner Elliot Werk

Werk
  • First appointed: February 17, 2015
  • Current term ends: March 8, 2021
  • Taxes:
    • Sales / Use
  • Management:
    • Audit Division
    • Information Technology

Commissioner Janet Moyle

Trujillo
  • First appointed: December 6, 2017
  • Current term ends: December 6, 2023
  • Taxes:
    • Individual Income
    • Estate Transfer
    • Illegal Drugs
    • Withholding
  • Management:
    • Collection Division
    • Field Offices
    • Tax Appeals

The lists above include major responsibilities assigned to that person. Although commissioners have primary responsibilities over certain areas, they provide backup coverage for each other when needed.

History of the Tax Commission

The function of today's Tax Commission is very different from its earliest predecessors, which were responsible for overseeing how Idaho land and other property was valued and taxed. The Tax Commission still has those responsibilities, but fulfilling them is a much bigger job. Idaho's growing population, the increasing complexity of our economy and the threats of fraud and cyberattacks have prompted the Tax Commission to adopt modern, technologically advanced systems for processing tax returns and protecting the personal information of Idaho taxpayers. That includes a new model of continuous software enhancement to our GenTax data system. Another focus is improving taxpayer education and public outreach to improve understanding of laws and policies, and ultimately encouraging voluntary compliance.

1890: The Idaho Constitution, Article 7, originally adopted on July 3, 1890, created a State Board of Equalization. The Board consisted of the governor, secretary of state, attorney general, state auditor and state treasurer. The board met annually to equalize the valuation of the taxable property in Idaho.

1913: The Legislature created the first Tax Commission from the Public Utilities Commission members. Its responsibility was administering Idaho's property tax laws.

1915: The Legislature repealed the law establishing the Tax Commission due to a constitutional challenge.

1931: The Legislature enacted the Property Relief Act of 1931, establishing the Office of Tax Commissioner to administer the Income Tax Act. Income taxes were to be used to offset property taxes levied for State purposes.

1939: The Tax Commissioner took over administration of taxes previously administered by the Commissioner of Finance, Commissioner of Law Enforcement, and the State Treasurer.

1941: The Legislature withdrew authority given to the Tax Commissioner in 1939 and returned it to Finance, Law Enforcement, and the State Treasurer.

1944: A constitutional amendment abolished the State Board of Equalization and transferred its duties to a Tax Commission with four part-time members. The amendment passed in November 1944, and the Tax Commission's first meeting was in August 1945.

1949: The Office of Tax Collector was created and given the previous duties of the Tax Commissioner, plus responsibility for certain taxes previously collected by the Commissioner of Law Enforcement, Commissioner of Finance, and the Commissioner of Agriculture.

1967: The Legislature abolished the Office of Tax Collector and transferred its duties to the State Tax Commission, which became a full-time body. Duties included:

  • State Board of Equalization oversight and assistance for county assessors and county boards of equalization
  • Oversight and assistance for county assessors and county boards of equalization
  • Publishing and enforcement of rules for all taxes
  • Administrative review (hearings) on protested tax cases, except for property tax cases
  • Administration for income tax, sales tax, motor fuels tax, beer and wine taxes, cigarette and tobacco taxes, mine license tax, kilowatt hour tax, inheritance tax, and unclaimed property

1974: A Constitutional amendment mandated a reorganization of the Executive Branch of State government. That placed the Tax Commission and Board of Tax Appeals under the new Department of Revenue and Taxation. With no director or staff of its own, the new departement included two component units operating independently and funded by separate appropriations.

2010: The Legislature transferred Idaho's Unclaimed Property Program from the Tax Commission to the State Treasurer's Office.

2015: The Tax Commission created its Taxpayer Access Point (TAP) to enable taxpayers to file and pay most taxes online 24 hours a day. The free, secure system offers such services as electronic filing of permit-based returns, making electronic payments, managing taxpayer accounts, and even requesting a payment agreement.

2016: The Tax Commission launched an identity verification tool to better protect taxpayer information and prevent identity theft-related fraudulent tax returns. In its first year alone, the ongoing program caught hundreds of fraudulent returns and prevented hundreds of thousands of dollars in refunds from going to criminals.

2016: The Tax Commission separated its Tax Policy and Tax Appeals functions, creating a new Tax Appeals section to improve transparency and consistency in resolving taxpayer appeals.

2016: Recognizing the need to develop a more customer service-focused culture that more effectively encourages voluntary compliance with tax laws, the Tax Commission merged its Tax Policy, Communications, and Taxpayer Services operations into the new Taxpayer Resources Unit (TRU). Commissioners sought greater efficiency and coordination in the timely delivery of services to the public and stakeholders and development of more consistent and understandable information. TRU's Education and Outreach, Policy, and Taxpayer Services groups respond to taxpayer questions, produce tax publications, provide education for the public and policymakers, and ensure that correspondence, publications, tax forms and instructions are accurate and clear.

2017: The Tax Commission launched Phase 1 of an effort to modernize its aging property tax assessment software for counties by making it a web-based application. The buildout to counties slowed significantly due to the immediate need to address the unexpected breakdown of one county's legacy computer system. However, plans called for installing the new property tax assessment system in more counties in late 2018 and early 2019. The goal is making software updates easier, improving standardization, increasing security, reducing data entry errors, and making information more accessible for taxpayers.

2017: The approaching expiration of the Tax Commission's lease in the Washington Group Plaza in Boise prompted the Department of Administration to include the agency among the first to move from the downtown location to the State's new Chinden Campus on the city's west side. Construction setbacks pushed out to mid-2019 the job of moving more than 450 employees to the new location – along with physically transferring significant information technology and other resources seamlessly and without disruption to tax collection and processing efforts.

Page last updated July 29, 2019. Last full review of page: July 29, 2019.

This information is for general guidance only. Tax laws are complex and change regularly. We can't cover every circumstance in our guides. This guidance may not apply to your situation. Please contact us with any questions. We work to provide current and accurate information. But some information could have technical inaccuracies or typographical errors. If there's a conflict between current tax law and this information, current tax law will govern.