Colorado Department of Revenue
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Frequently Asked Questions

Q. Why do we need IRP?
Q. Why is it important to state exact miles?
Q. What is the "grace period" on a renewal?
Q. What kind of information should be kept on file for future reference or audits?
Q. Can I use IRP if I want to register in Colorado only as a commercial vehicle?
Q. How much does IRP cost?
Q. Moving your company to Colorado?
Q. I occassionally travel out of Colorado do I need IRP?