The Field Audit Section (FAS) will audit at least three percent of Colorado International Fuel Tax Association/International Registration Plan (IFTA/IRP) licensees each year. Any licensee may be selected for audit. Colorado law generally allows the FAS to audit your account for a period of three years.If you are selected for an audit, the auditor will contact you in advance to arrange an acceptable
date to begin the audit. At that time, the auditor will outline the time period to be covered by the audit and the records that will be reviewed.
The auditor will meet with you to determine background information about your operations, examine the internal controls of your reporting system, and select records to be reviewed. The auditor will discuss sample periods, sampling techniques and any problem areas. A final conference will be held with you to explain any proposed adjustments to tax. Determinations or adjustments may be issued for any reporting period covered by the audit. The auditor may make suggestions regarding your future reporting practices.