Colorado Sales Tax Filing
State and home-rule city sales tax returns tracked, reconciled to your POS, and filed on time — the compliance work that catches more Colorado retailers than income tax ever does.
Why Colorado sales tax is harder than it looks
State of Colorado sales tax returns through Revenue Online
Home-rule city returns (Denver, Aurora, and other self-collecting cities)
Sales tax license setup and renewals for new locations
Reconciling POS sales reports to what gets filed — so the numbers match if you are ever audited
Back filings and penalty resolution if you have fallen behind
What we handle
Colorado is one of the most complicated sales tax states in the country. On top of the state return, dozens of home-rule cities — including Denver, Aurora, and Centennial — administer their own sales tax with their own returns, their own portals, and their own deadlines. A retail business in the Denver metro can easily owe filings to three or four different tax authorities every period.
Home-rule cities in Colorado collect their own sales tax separately from the state. Filing with the Department of Revenue does not cover a home-rule city return — that is the gap where most penalties come from.
We file the back returns and work through penalties directly with the state or city. Coming forward voluntarily almost always ends better than waiting for a notice.
Yes. We reconcile your POS sales data to the returns each period, which is exactly what an auditor checks first.
Call or text and tell us what you need. We will tell you exactly what to bring.
Common questions
I already file the state return. Why would I owe a city too?
Home-rule cities in Colorado collect their own sales tax separately from the state. Filing with the Department of Revenue does not cover a home-rule city return — that is the gap where most penalties come from.
What happens if I have missed filings?
We file the back returns and work through penalties directly with the state or city. Coming forward voluntarily almost always ends better than waiting for a notice.
Can you file from my POS reports?
Yes. We reconcile your POS sales data to the returns each period, which is exactly what an auditor checks first.
Claim Your Free Strategy Session
One call. We look at your books, your filings, and your tax exposure — and tell you exactly where the money is leaking.
No obligation. No pressure. Just a straight answer from a real accountant.
Prefer the phone? Call 720-308-3416