How does Amazon FBA sales tax work in Colorado in 2026?

For 2026, Amazon collects and remits Colorado sales tax on your FBA and MFN orders as a marketplace facilitator. You are still responsible for any direct-to-consumer or Shopify sales into Colorado once those off-Amazon sales cross $100,000, and you may need Colorado registration if FBA inventory is stored in-state.

Does Amazon FBA inventory in Colorado create physical nexus?

Yes — Amazon storing your FBA inventory in a Colorado fulfillment center generally creates physical nexus regardless of sales volume. Pull your Amazon Inventory Event Detail report and look for CO fulfillment-center activity; if present, Colorado typically expects registration even when Amazon already collects sales tax on the facilitated orders.

Does Amazon collect Colorado sales tax on my FBA orders?

Yes — Amazon is a marketplace facilitator in Colorado and collects and remits Colorado sales tax on your FBA and MFN sales automatically.

Do I still need to register in Colorado as an FBA seller?

If Amazon stores your FBA inventory in Colorado, you may have physical nexus and need to register for informational filing. Check your Amazon inventory reports for CO distribution.

What about direct-to-consumer sales outside Amazon?

Those are your responsibility. If your Shopify store or website sells into Colorado above $100,000, you register independently.

Colorado Amazon FBA Sales Tax Guide — 2026

Updated 2026-05-16

If your Amazon business sells $100,000 into Colorado in a calendar year, you have economic nexus and must register, collect, and remit Colorado sales tax.

Amazon FBA and sales tax in Colorado

Amazon is a marketplace facilitator in Colorado, which means Amazon calculates, collects, and remits sales tax on your FBA and MFN sales to Colorado buyers. You don't collect tax on those transactions yourself.

However, if Amazon stores your FBA inventory in a Colorado warehouse, you may have physical nexus — independent of the economic threshold. Some states will ask you to register anyway for information reporting.

When you still need to file in Colorado

You sell direct-to-consumer from your own store outside Amazon (Shopify, your website) into Colorado.
You have inventory stored in a Colorado FBA center (check your Amazon Seller Central inventory reports by state).
You sell wholesale, dropship, or run retail trade shows in Colorado.
State requires an information return even for marketplace-only sales (rules vary).

Common Amazon-seller mistakes in Colorado

Assuming marketplace facilitator status covers everything — if Amazon stored your inventory in Colorado, some states still want a registration on file.
Double-collecting when you sell the same SKU via Amazon AND your own Shopify store. Amazon collects; Shopify collects. Both remit. The buyer pays tax twice. Audit your setup.
Reporting marketplace-facilitated sales on your Colorado sales tax return as taxable when they should be reported as marketplace-facilitated (non-taxable for you). State form boxes vary.

Colorado nexus note

Economic nexus in Colorado triggers at $100,000 in gross sales delivered into Colorado in the current or prior calendar year. No transaction count threshold.

What to do next

Read the full Colorado overview for thresholds, filing frequency, marketplace facilitator rules, and registration links. Use the nexus calculator to check whether you have crossed the threshold. For background on the post-Wayfair economic nexus framework, see the pillar guide.

Frequently asked questions

How does Amazon FBA sales tax work in Colorado in 2026?: For 2026, Amazon collects and remits Colorado sales tax on your FBA and MFN orders as a marketplace facilitator. You are still responsible for any direct-to-consumer or Shopify sales into Colorado once those off-Amazon sales cross $100,000, and you may need Colorado registration if FBA inventory is stored in-state.
Does Amazon FBA inventory in Colorado create physical nexus?: Yes — Amazon storing your FBA inventory in a Colorado fulfillment center generally creates physical nexus regardless of sales volume. Pull your Amazon Inventory Event Detail report and look for CO fulfillment-center activity; if present, Colorado typically expects registration even when Amazon already collects sales tax on the facilitated orders.
Does Amazon collect Colorado sales tax on my FBA orders?: Yes — Amazon is a marketplace facilitator in Colorado and collects and remits Colorado sales tax on your FBA and MFN sales automatically.
Do I still need to register in Colorado as an FBA seller?: If Amazon stores your FBA inventory in Colorado, you may have physical nexus and need to register for informational filing. Check your Amazon inventory reports for CO distribution.
What about direct-to-consumer sales outside Amazon?: Those are your responsibility. If your Shopify store or website sells into Colorado above $100,000, you register independently.

Sources

date_retrieved: 2026-05-16