What is a County Auditor

The County Auditor is a Constitutional Office of the State of Indiana.  The Auditor is the Chief Fiscal officer of the county and by law, is the watchdog over all county funds and maintains the official records of all receipts, disbursements and fund balances.  It is the responsibility of the Auditor to account for the hundreds-of-millions-of-dollars received each year, by the county and to issue warrants (checks) in payment of all county obligations. 

The Hamilton County Auditor’s Office is also responsible for maintaining property tax maps and ownership records for the entire county.  All deeds transferring property must be passed through the Real Property Department, within the Auditor’s Office. The duties within the County Auditor’s Office are numerous and also include: 

Fiscal Responsibility:

  • Budgeting

  • Tax Settlement (Property Tax)

    • Drains

    • Excise

    • Property Tax Refunds

    • Abstract

    • Distribution of CVET, FIT, Excise and Property Tax

    • Appeals

    • Adjustments

    • Certify Tax Rates

  • Accounts Receivable

  • Accounts Payable

  • County Payroll

  • Local Income Taxes

  • Local Income Taxes

  • Bonds

  • Tax Increment Financing (TIF)

  • Grants: Federal, State and Local

  • Capital/Fixed Assets

  • Reporting

    • Gateway

    • Fiscal Year End State Board of Accounts Audit


Administrative Responsibilities


The Hamilton County Auditor is Secretary to:

  • Board of Commissioners

  • Hamilton County Council

  • Solid Waste Board

  • Airport Authority Board

  • Redevelopment Commission & Authority

  • Committee Meetings


Other Administrative Responsibilities include:

  • Tax Sales

  • County Ordinances/Resolutions

  • Bids

  • Annual Calendars

  • Liability Trust Accounts

  • Vehicles


Operational Responsibilities include managing:

  • Real Property Department

  • Settlement Department

  • Geographical Information Services Department

  • Accounts Payable Department

  • Accounts Receivable Department

  • Payroll Department

  • Disability/Benefits

  • Grants Administration

  • Data Entry (property ownership records)







Robin Mills


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1569 Overlook Circle

Cicero, In 46034