The Caltrans Internal Audits Office (CIAO) will provide Caltrans with objective assurance and consulting services designed to add value and improve Caltrans’ operations. Our team works to create positivity and efficiency and we pride ourselves in "Building Brighter Ideas". CIAO will help Caltrans accomplish its objectives by evaluating and improving the effectiveness of governance, risk management, and internal control processes. Contact Audits

Indirect Cost Rate report: (Updated daily)

CIAO Issued rates: Report Link

Pending rates: Report Link

Indirect Cost Rate video

We have created a video explaining our Indirect Cost Rate application process.  Please click here: Video Link

NOTE: CIAO is responsible for reviewing government and non-profit annual indirect cost rates.   Indirect cost rate audits is performed by Independent Office of Audits and Investigations (IOAI).  Please visit for issued audits. 

For consultant rates, please visit

Single Audit Determination List

Starting with fiscal year ending 2021, Caltrans will list all the agencies who require an exemption or a Single Audit.  The report will be updated weekly, and allows  agencies to check if Caltrans requires a Single Audit/Exemption Letter; or verify if Caltrans received the information.

 We really want to hear your feedback!  Please let us know!  Survey Link 


Single Audit Review