For most sellers, Colorado’s proposed marketplace rule would not shift the basic arrangement: a marketplace facilitator generally collects and remits Colorado state and state-administered local sales tax on sales made through its marketplace. Colorado Department of Revenue guidance says sellers who sell exclusively through a facilitator are not required by the Department to hold a state sales-tax license. The key exception is that selling directly—such as through your own website or a store—can require you to obtain a license and handle tax obligations for those sales.
The proposal is not a reason to assume every obligation disappears or that every marketplace transaction is covered. Colorado law makes the facilitator responsible for facilitated sales when the seller can show the required contract or good-faith certification that the facilitator is registered and will collect and remit tax. Your own-channel sales, filing requirements, local-tax exposure, and records still need attention. Because the proposal’s final status and your exact facts matter, confirm the current position with the Colorado Department of Revenue or talk to Sales Tax Compliance USA and we will check it for you.
Key takeaways
- A marketplace facilitator generally collects Colorado state and state-administered local tax on sales through its marketplace.
- Colorado says marketplace-only sellers are not required by the Department to hold a state sales-tax license.
- Direct website or store sales can require your own Colorado license and separate tax compliance.
- Keep facilitator agreements or certifications and transaction records; inaccurate seller information can create liability.
- Check the current status of the proposed rule and verify local-tax and threshold treatment for your specific channels.
What Colorado’s proposed marketplace rule would change
Colorado already assigns sales-tax responsibilities to marketplace facilitators under state law and Department of Revenue guidance. The Department says a facilitator generally must collect and remit applicable state and state-administered local sales taxes on sales made through its marketplace. So the practical question for most sellers is not whether a proposal suddenly makes the marketplace responsible, but whether the proposed rule clarifies or changes how existing requirements apply to particular transactions.
Do not treat a proposal as a final rule. Its effect depends on the text adopted, its status, and how it applies to your business. The available Department materials describe the current framework, but do not establish the final status or operative text of the proposal mentioned in your question. Check the Department’s rulemaking materials before changing your process. The exact position depends on your circumstances — confirm with the state, or talk to us and we will check it for you.
This is different from the issue discussed in “Does the south carolina marketplace tax ruling affect my exposure?” That article concerns another state; Colorado’s licensing, collection, and local-tax rules must be assessed under Colorado requirements.
Who counts as a marketplace seller or facilitator?
A marketplace seller is a business or individual that sells goods, commodities, or services through a marketplace operated by a facilitator. A marketplace facilitator is the entity that provides the marketplace and facilitates the sale between seller and purchaser. Colorado’s statutory framework treats the facilitator as having the retailer’s sales-tax rights, obligations, and liabilities for sales made through the marketplace, subject to the statute’s conditions and exceptions.
In practical terms, a seller using a third-party online marketplace may be a marketplace seller, while the marketplace operator may be the facilitator. The label alone is not enough: the arrangement and the marketplace’s role matter. A seller that also sells through its own website or other channels may be a multichannel seller, but the facilitator’s responsibility for sales made through its marketplace remains a separate question from the seller’s obligations on other sales.
Colorado’s Department of Revenue has a dedicated “Marketplace Facilitators” page and “Sales Tax Information for Online Sellers.” Sellers should review the marketplace agreement and tax settings rather than assume that every online sales channel qualifies or is treated identically.
When does the marketplace collect Colorado sales tax?
In general, Colorado says a marketplace facilitator must collect and remit applicable state and state-administered local sales taxes on sales made in Colorado through its marketplace. The facilitator’s responsibility applies to facilitated sales even where the seller’s own licensing or collection position would otherwise differ, subject to the statutory framework.
Colorado law provides a way for a seller to establish that the facilitator is responsible: the seller must be able to show either a contract explicitly requiring the facilitator to collect and remit tax on taxable sales, or a certification requested from and received in good faith stating that the facilitator is registered and will collect tax on taxable marketplace sales. Keep the relevant agreement or certification and transaction records. Do not infer that tax was correctly handled merely because a marketplace checkout displayed a tax amount.
For sales through a marketplace, the facilitator generally handles collection and remittance. For sales outside it, the seller’s own nexus, licensing, collection, and filing position must be evaluated separately. The Department’s “Economic Nexus in Colorado” and “Amazon FBA sales tax in Colorado” articles address related questions about Colorado connections and inventory.
Do marketplace sellers need a Colorado sales-tax license?
The Colorado Department of Revenue says it does not require a seller who sells exclusively through a marketplace facilitator to obtain a state sales-tax license. It also says that if a facilitator requires sellers to hold a license, the seller should direct that requirement question to the facilitator. This distinction matters: a marketplace’s onboarding policy is not necessarily the same as the state’s licensing requirement.
If you also sell directly to consumers through your own website or in a store, the Department says you are required to have a sales-tax license. Other non-marketplace channels may also affect your obligations, depending on the facts. Do not assume that marketplace-only treatment applies to your entire business once you add another channel.
Foreign sellers should also consider the separate issues addressed in “Sales tax for foreign sellers in Colorado.” Whether you need a license can depend on your sales channels and Colorado connections, not simply where your business is incorporated or where you live. For a broader explanation, see “Does a marketplace collecting tax mean I do not have to register?”
What if you sell through other channels or meet a threshold?
Marketplace collection does not automatically cover your direct website orders, phone orders, or sales through another channel. Track those transactions separately from marketplace-facilitated sales. If you have Colorado physical presence, inventory, or other business activity, those facts may also affect your obligations. For example, marketplace inventory questions are discussed in “Amazon FBA Sales Tax in Colorado”; inventory in another state is a separate issue, as explained in “Does Illinois Marketplace Inventory Create Physical-Presence Nexus?”
Colorado’s Department of Revenue states that a retailer that did not make retail sales in excess of $100,000 during the previous calendar year must begin collecting once its retail sales into Colorado exceed $100,000 during the current calendar year. The Department’s FAQ gives that mechanism for retailers; do not assume marketplace-facilitated sales are counted the same way for your own registration or collection analysis without checking the applicable rule and your facts. The threshold does not erase obligations that may arise from physical presence or other circumstances.
Threshold calculations can be affected by which sales are included, the period measured, and whether sales are made through a facilitator or directly. Review the current Department guidance and your channel-level totals. If you are near a threshold or have mixed channels, the exact position depends on your circumstances — confirm with the state, or talk to us and we will check it for you.
What filing and recordkeeping duties remain?
Colorado’s Department of Revenue says sellers who sell exclusively through a marketplace facilitator are not required by the Department to hold a state sales-tax license. Its guidance also describes marketplace-only sellers as relieved of state collection and remittance for marketplace sales. If you have a license because of other sales or circumstances, however, do not assume that marketplace transactions remove all return or account duties. Follow the filing instructions and reporting treatment applicable to your account, and confirm with the Department how marketplace sales should be shown.
Keep records that let you distinguish marketplace sales from direct and other-channel sales. Useful records include order-level transaction reports, customer destination information, tax collected, refunds and cancellations, marketplace statements, and the facilitator agreement or certification. Retain records supporting any exemption or non-taxable treatment and reconcile marketplace reports to your own books.
Colorado’s marketplace seller information identifies Form DR 1290 for use by marketplace sellers, as applicable. Whether it applies to you depends on your circumstances and current Department instructions. Keep any completed certification and evidence that it was submitted, and check the Department’s current forms and guidance rather than relying on an old marketplace setting.
How Colorado local taxes apply to marketplace sales
For state-administered local jurisdictions, Colorado says the marketplace facilitator generally collects and remits applicable local sales taxes along with state sales tax on marketplace transactions. The Department administers state-collected local taxes and says retailers do not need separate local registration with those jurisdictions just to collect those taxes.
That does not mean every Colorado local tax is administered in the same way. Colorado includes self-collecting home-rule jurisdictions, and local requirements can differ. A marketplace’s handling of state-administered local tax does not by itself establish that every local tax, business-license requirement, or seller obligation has been satisfied. Check the destination jurisdiction and the marketplace’s tax coverage, especially if you have a physical business presence or make direct sales.
For a marketplace order, retain the destination and tax detail shown in the transaction report. If the marketplace does not collect a tax you believe applies, do not silently assume the seller or facilitator is correct; verify the jurisdiction’s rules and the marketplace’s responsibility. The exact position depends on your circumstances — confirm with the state or relevant local authority, or talk to us and we will check it for you.
What if marketplace sales are reported incorrectly?
Incorrect seller information can matter. Colorado law provides that a facilitator may be relieved of liability for uncollected tax, penalties, and interest if the Department is satisfied that the facilitator made a reasonable effort to obtain accurate information and the failure resulted from incorrect information supplied by the seller. In that circumstance, the statute provides that the seller is liable for the tax the facilitator failed to collect, plus applicable penalties and interest.
That is why sellers should promptly correct inaccurate product, transaction, exemption, or business information supplied to a marketplace and preserve evidence of corrections. If a report shows missing or unexpected tax, compare the order details with the marketplace agreement, destination, and tax report, then contact the marketplace and, where appropriate, the Department or local authority.
Sales Tax Compliance USA is a done-for-you sales-tax service staffed by people. We can review your channels, Colorado activity, marketplace documentation, and filing position with you; we cannot promise a particular audit outcome or replace the Department’s determination.
How Colorado sales-tax responsibilities generally differ by sales channel
| Sales situation | Who generally handles collection on the sale? | Seller’s practical next step |
|---|---|---|
| Sale made through a marketplace facilitator | The facilitator generally collects and remits applicable state and state-administered local tax. | Keep the agreement or good-faith certification and transaction-level reports; verify the marketplace’s tax treatment. |
| Seller sells exclusively through a facilitator | The facilitator generally handles tax on facilitated sales; the Department says it does not require a state license solely for this marketplace-only activity. | Check whether the marketplace imposes its own license requirement and retain records supporting facilitator responsibility. |
| Seller also sells through its own website or a store | The facilitator handles its marketplace sales; the seller must assess and handle obligations for direct sales. | Obtain a state license as required by Department guidance and review nexus, collection, and filing duties for direct sales. |
| Seller has Colorado sales near or above the economic-nexus threshold | The facilitator handles facilitated sales; the seller’s threshold analysis for its own obligations requires a separate review. | Track Colorado sales by channel and verify which sales count and when collection must begin under current Department guidance. |
| Sale is delivered into a local jurisdiction | The facilitator generally handles state-administered local tax on marketplace sales; other local requirements may differ. | Check destination tax coverage and any applicable self-collecting local or business-license requirements. |
Frequently asked questions
What is a marketplace facilitator under Colorado law?
It is an entity that facilitates sales by marketplace sellers to purchasers through its marketplace. Colorado law assigns the facilitator retailer-like sales-tax rights, obligations, and liabilities for sales made through that marketplace, subject to statutory conditions.
Does a marketplace facilitator collect Colorado sales tax for its sellers?
Generally, yes: the Colorado Department of Revenue says a facilitator must collect and remit applicable state and state-administered local sales taxes on sales made through its marketplace. Keep the contract or good-faith certification that supports the facilitator’s responsibility, and verify the treatment of your transactions.
Do Colorado marketplace sellers need their own sales-tax license?
The Department says it does not require sellers who sell exclusively through a marketplace facilitator to hold a state sales-tax license. If you also sell directly to consumers through your own website or a store, the Department says you are required to have a license; other facts may also affect the answer.
Are sellers responsible for sales made through a marketplace facilitator?
The facilitator generally bears the collection and remittance responsibility for facilitated sales when the seller can show the required contract or good-faith certification. Colorado law provides a potential seller liability where the facilitator is relieved of liability because incorrect information supplied by the seller caused tax not to be collected. Keep accurate information and supporting records.
What if I also sell directly or through other channels?
Marketplace collection generally applies to sales made through that marketplace, not automatically to your other-channel sales. Assess licensing, nexus, collection, and filing duties for direct and other sales separately, and track sales by channel.
Do Colorado marketplace sellers still have filing or recordkeeping duties?
Marketplace-only sellers are not required by the Department to obtain a state license, but sellers should retain transaction reports, marketplace agreements or certifications, destination and tax details, and records of refunds and exemptions. If you hold a license or have other sales, follow the Department’s filing instructions and confirm how marketplace sales should be reported.
How do Colorado local sales taxes apply to marketplace sales?
The facilitator generally collects applicable state-administered local taxes on marketplace sales along with state tax. Colorado also has local jurisdictions with separate administration or requirements, so verify the destination and whether any local obligation falls outside the facilitator’s coverage.
When does Colorado’s sales threshold trigger registration and collection?
The Department says a retailer that did not exceed $100,000 in retail sales during the previous calendar year must begin collecting once its retail sales into Colorado exceed $100,000 during the current calendar year. How marketplace sales factor into your own threshold analysis can depend on the applicable rule and your facts, so verify before acting.
Official sources
- https://tax.colorado.gov/marketplace-facilitators
- https://tax.colorado.gov/marketplace-sellers
- https://tax.colorado.gov/sales-use-tax-FAQ
- https://tax.colorado.gov/sales-tax-guide
- https://tax.colorado.gov/sites/tax/files/SUTT_Marketplaces.pdf
- https://leg.colorado.gov/sites/default/files/2024a_title39.pdf
Related reading
- Does the south carolina marketplace tax ruling affect my exposure?
- Sales tax for foreign sellers in Colorado
- Amazon FBA sales tax in Colorado
- Does a marketplace collecting tax mean I do not have to register?
- Our sales tax compliance services
Getting this handled
If you would rather not work this out yourself, that is what we do. We register you, file your returns and keep you compliant across every state where you have an obligation — one point of contact, one invoice. Talk to us about your situation.
Reviewed by Paul le Roux, CA(SA). Sales Tax Compliance USA handles US sales tax registration, filing and remittance for cross-border and domestic ecommerce sellers as a fully managed service.
This article is general information for educational purposes and does not constitute legal or tax advice. Sales tax rules change and depend on your specific facts. Consult a qualified tax professional about your own position.