Colorado excludes your eBay sales from its nexus math, and its own tax code is silent on 1099-K.

The Bottom Line for Colorado eBay Sellers

Colorado is one of the more seller-friendly states in this cluster on the questions it does answer, and an LLC doesn't change any of those answers: a marketplace-only Colorado seller has no state registration to make and no separate nexus math to worry about beyond off-platform sales. What the entity changes is who's exposed once your business does something Colorado's marketplace rules were never written to cover.

Colorado's Department of Revenue states its marketplace-seller relief in the plainest terms of any state in this cluster, with a published worked example matching almost exactly the fact pattern of an online-only reseller. Its silence on Form 1099-K specifically is a genuine gap rather than a hidden yes; the state's own withholding-driven 1099 framework simply predates, and doesn't address, third-party settlement organization reporting, and this page treats that gap honestly rather than assuming a direction. Colorado is also unusual in this cluster for how much of its marketplace-seller guidance is written in plain, example-driven language rather than statutory cross-references, which makes the 1099-K silence stand out more than it might in a state whose other guidance is already terse.

If every one of your sales into Colorado runs through eBay, you do not need your own Colorado sales-tax registration — eBay is the one collecting and remitting. Colorado excludes marketplace-facilitated sales when measuring your own $100,000 threshold — your eBay sales do not count against it. We could not confirm whether Colorado sets its own 1099-K reporting threshold. The federal test is $20,000 and 200 transactions.

eBay Collects Colorado Sales Tax. What Is Still Yours?

If every one of your sales into Colorado runs through eBay, you do not need your own Colorado sales-tax registration — eBay is the one collecting and remitting.

Colorado's Department of Revenue answers this with an actual worked example on its own site: a seller whose only channel is a marketplace facilitator has no obligation to collect or remit state sales tax, because the marketplace is the one doing it. That's a clean, unconditional answer for a marketplace-only seller, with no separate registration and no annual filing checking a marketplace-only box the way some states require. The moment you add a direct sales channel, Colorado's ordinary licensing and collection duties attach to that channel specifically, the same way they would for any other retailer. Keep documentation of your marketplace-only status even though no registration is required, since a state audit years later is easier to close out with contemporaneous records than with a reconstruction of what your sales channels looked like at the time.

Do Your eBay Sales Count Toward Colorado's Nexus Test?

Colorado excludes marketplace-facilitated sales when measuring your own $100,000 threshold — your eBay sales do not count against it.

Colorado's guidance on this is framed around collection obligation rather than a step-by-step threshold worksheet, but it points the same direction consistently: marketplace sellers aren't required to collect or remit on sales made through a facilitator, and a multichannel seller only picks up the state's ordinary licensing duties for sales made independently of the marketplace. Read together, that means your eBay volume specifically isn't the number Colorado is watching; it's whatever you sell outside a marketplace facilitator that counts toward the state's threshold. If you later add a website or in-person sales, start tracking that channel's Colorado sales from day one rather than waiting until you suspect you're close to the threshold, since reconstructing historical sales figures accurately gets harder the longer you wait.

Colorado's 1099-K Threshold

We could not confirm whether Colorado sets its own 1099-K reporting threshold. The federal test is $20,000 and 200 transactions.

This is Colorado's genuine gap, worth naming plainly rather than filling in with a guess: nothing in Colorado's tax statutes or Department of Revenue guidance mentions Form 1099-K, third-party settlement organizations, or the federal reporting statute those forms come from. What Colorado's 1099 framework does address is withholding; a form gets transmitted to the state when Colorado income tax was withheld on the payment, a criterion that essentially never applies to a marketplace's payout to a seller. In practice that likely means no separate Colorado filing, but it's an inference from an unrelated framework rather than a direct statement, and that distinction matters if your situation is anything but ordinary eBay selling.

Buying Inventory to Resell in Colorado

Colorado accepts a resale certificate issued by another state, so you can buy inventory for resale without registering here first.

Colorado has no state-specific numbered resale certificate of its own; it accepts either another state's sales tax license or an exemption certificate issued by another state to document a resale exemption, and recommends (but the GIL indicates does not strictly require) using the Multistate Tax Commission's Uniform Sales & Use Tax Certificate, Multijurisdiction (Colorado Form DR 0563) as the vehicle for doing so.

Colorado doesn't issue its own numbered resale certificate at all; it accepts a sales tax license or exemption certificate from another state as documentation of a resale exemption, with the Multistate Tax Commission's uniform certificate recommended, though not strictly required, as the paperwork vehicle. That's a genuinely open door for a reseller already registered somewhere else. On the secondhand side, Colorado sets a statewide baseline: dealers report transactions to local law enforcement within a short window regardless of where they operate, but actual licensing is left to individual cities and counties to adopt or skip, so whether you need a local secondhand-dealer license depends entirely on where you're based. A Colorado supplier unfamiliar with the MTC certificate may simply ask for a Colorado account number out of habit; showing them the GIL's language directly, rather than just presenting the out-of-state certificate on its own, tends to resolve that faster than a back-and-forth.

Colorado leaves second-hand dealer licensing to cities and counties, so check your own. Colorado sets statewide baseline recordkeeping/reporting requirements for secondhand dealers (C.R.S. §§ 18-13-114 to 18-13-117, e.g. reporting transactions to local law enforcement within three days), but §18-13-118 expressly leaves actual licensing to local government: 'Any city, municipality, city and county, or county may enact ordinances or resolutions regulating secondhand dealers, including license requirements and assessment of fees ...; however, such ordinances may not be less stringent than' the state baseline. There is no statewide license requirement, jurisdictions that choose not to adopt their own licensing ordinance instead just receive the state-mandated transaction reports.

Setting Up to Sell on eBay from Colorado

1. Confirm your only Colorado sales channel is eBay before assuming no filing duty

   The state's relief is unconditional for a pure marketplace seller but stops there, so verify your actual channels before relying on it.

2. Track any direct sales separately against Colorado's threshold

   Only sales made outside a marketplace facilitator count toward the state's number, so keep that column separate from your eBay totals.

3. Form the LLC regardless of how light Colorado's paperwork is

   Colorado's relief doesn't change the underlying case for separating personal and business liability.

4. Use the MTC certificate when buying wholesale from a Colorado supplier

   Colorado accepts another state's sales tax license or exemption certificate, with the Multistate Tax Commission's form as the recommended vehicle.

5. Check your own city or county for secondhand-dealer licensing rules

   Colorado sets only a statewide reporting baseline; actual licensing is a local government decision you need to check directly.

What We Could Not Confirm for Colorado

These pages only state what a primary source establishes. For Colorado we could not confirm the following, so this page does not answer it:

• the state's 1099-K reporting threshold

Who to Ask in Colorado

The Colorado Department of Revenue is the right contact for sales tax, marketplace-seller and nexus questions, and its Multichannel Sellers guidance page specifically addresses a seller who operates both on and off a marketplace. For secondhand-dealer licensing, your own city or county clerk's office is the one to check, since Colorado leaves that decision to local government entirely. Colorado's Department of Revenue also publishes its General Information Letters online, including the one addressing resale-certificate acceptance, which is worth having on hand if a supplier pushes back on an out-of-state certificate.

Sources

• https://tax.colorado.gov/marketplace-sellers
• https://tax.colorado.gov/multichannel-sellers
• https://tax.colorado.gov/DR1106
• https://tax.colorado.gov/sites/tax/files/documents/DR1106_e_wo.pdf
• https://tax.colorado.gov/withholding-tax-filing-requirements
• https://tax.colorado.gov/annual-reconciliation-faq
• https://tax.colorado.gov/how-to-report-year-end-withholding-statements
• https://tax.colorado.gov/sites/tax/files/documents/GIL-13-006.pdf
• https://codes.findlaw.com/co/title-18-criminal-code/co-rev-st-sect-18-13-118/
• https://tax.colorado.gov/business-income-tax
• https://tax.colorado.gov/corporate-income-tax-guide
• https://www.irs.gov/instructions/i1099k

Federal 1099-K threshold: IRC § 6050W(e), as amended by § 70432(a) of the One, Big, Beautiful Bill Act (P.L. 119-21, July 4, 2025). A third-party settlement organization such as eBay must file Form 1099-K only if BOTH tests are met for the calendar year: gross payments exceed $20,000 AND the number of transactions exceeds 200. These are the figures for tax year 2026. There is no forward phase-in: § 70432(a) takes effect "as if included in section 9674 of the American Rescue Plan Act," so the same $20,000 / 200 figures apply retroactively to calendar years after 2021 (tax years 2022 through 2026 alike). The $600 threshold enacted by ARPA § 9674 (P.L. 117-2) was repealed before it operated, and the IRS transition-relief thresholds previously announced for 2024 and 2025 are superseded. A platform may issue a 1099-K below these figures, and a state may set a lower TPSO threshold, in which case a seller can receive a 1099-K without meeting the federal test.. Verified 2026-08-08.