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Dianne E. Ray, CPA, MPA
Message from the State Auditor

Welcome to the Colorado Office of the State Auditor (OSA), where our mission is to improve government for the people of Colorado.

The OSA is a nonpartisan agency in Colorado's Legislative Branch. Our performance, financial, and IT audits provide the General Assembly, agencies, and the public with thorough, credible, and impartial assessments of the operation of state programs and the use of state and federal funds. Our audits provide solution-based recommendations that focus on reducing costs, increasing efficiency, promoting the achievement of legislative intent, improving effectiveness of programs and the quality of services, ensuring transparency in government, and ensuring the accuracy and integrity of financial and other information that decision makers need to hold government agencies accountable for the use of public resources.

We invite you to review our audit reports and other information on our website. Our staff are happy to assist you if you have further questions.



In response to guidance from federal, state, and local public health authorities, effective immediately the OSA and its employees are implementing social distancing practices to help control the spread of the novel Coronavirus (COVID-19).

The OSA remains open for business. However, most OSA employees are now working remotely from home.

To ensure continuity of operations as best as possible, the following changes are in effect:

  • If you have business with the OSA, please continue to contact, communicate, and work with OSA employees directly via phone or email. An employee directory with direct extensions and email addresses is available HERE.
  • In-person meetings will be transitioned to a conference call or other remote meeting technology or rescheduled for a later date.
  • If you do not know which OSA employee to contact, or if you have general inquiries, please call and leave us a voice message (303.869.2800) or send us an email ( and we will get back to you promptly.
  • LOCAL GOVERNMENTS, please click HERE for updated instructions and guidance about audit and exemption filings.

Thank you for your cooperation and patience.