sales tax · 2026
Colorado sales tax registration threshold
Retail sales into Colorado (no transaction-count test).
- Measured over
- Previous or current calendar year
- On crossing
- Register for Colorado sales tax
What is the Colorado sales tax registration threshold?
The Colorado sales tax registration threshold is $100,000, measured over the previous or current calendar year. Cross it and you must register for Colorado sales tax with the Colorado Department of Revenue. You then charge sales tax on sales to customers in Colorado.
Do marketplace sales count toward this threshold?
No. Colorado (sales tax) excludes sales made through a registered marketplace facilitator from the underlying seller's own economic nexus threshold. Your Amazon, Etsy and eBay volume does not push you toward the figure on this page - only your own direct sales do.
Departmental guidance: Colorado Department of Revenue guidance
Most exclusions of this kind are conditional on the facilitator being registered and actually collecting the tax, and some states ask the seller to hold the facilitator's certification. Confirm which applies to your marketplaces before relying on it.
What's different about Colorado
Colorado has ~70 home-rule cities that administer tax independently. The state's SUTS portal lets you file for most of them in one place, but a few still require separate registration.
State registration isn't the whole story
Colorado is a home-rule jurisdiction: local cities and counties administer their own sales tax separately from the state. Registering with the state does not register you locally - check local requirements once you cross.
When do you need to register?
Economic nexus: once your sales into the state pass its threshold (commonly $100k or 200 transactions), you must register and collect that state's sales tax.
Deadline: Register before your next sale - many states apply nexus prospectively from the crossing.
How to register in Colorado
- 1Register for a sales-tax permit with the state's Department of Revenue.
- 2Enable tax collection for that state in your checkout / Stripe Tax.
- 3Remit collected tax on the state's filing schedule.
- 4If you're crossing several states, consider a filing service (TaxJar / Avalara).
Colorado Department of Revenue - official guidance Sales Tax Institute - Economic Nexus
Don't track Colorado by hand.
TaxesRadar reads your Stripe & Paddle sales and warns you the moment you approach this threshold - across every country and US state at once.
Colorado sales tax threshold - FAQ
What is the sales tax registration threshold in Colorado?
$100,000, measured over previous or current calendar year. Colorado has no transaction-count test, so volume of orders alone never triggers registration.
When do I need to register for sales tax in Colorado?
Economic nexus: once your sales into the state pass its threshold (commonly $100k or 200 transactions), you must register and collect that state's sales tax. Register before your next sale - many states apply nexus prospectively from the crossing.
Does registering with Colorado cover local sales tax too?
Not automatically. Colorado is a home-rule jurisdiction - cities, counties or parishes administer their own sales tax alongside the state. Check local registration requirements separately once you cross the state threshold.
Does TaxesRadar file my sales tax for me?
No. TaxesRadar watches your Stripe and Paddle sales, warns you before you cross this threshold, and gives you the registration checklist. Filing itself is handed to specialist partners.
Comparing tools for the Colorado threshold
TaxesRadar vs TaxJarTaxJar files US state returns. Where it stops is the border - see what each one covers, side by side.More on the Colorado sales tax threshold
Other sales tax thresholds
Guidance, not tax advice. Confirm the specifics for your situation with a qualified professional. Threshold shown for 2026; last verified 2026-07-27 against Colorado Department of Revenue. Rules change - TaxesRadar keeps them current.