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

For 2026, Amazon collects and remits Connecticut 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 Connecticut once those off-Amazon sales cross $100,000 in gross sales OR 200 transactions, and you may need Connecticut registration if FBA inventory is stored in-state.

Does Amazon FBA inventory in Connecticut create physical nexus?

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

Does Amazon collect Connecticut sales tax on my FBA orders?

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

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

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

What about direct-to-consumer sales outside Amazon?

Those are your responsibility. If your Shopify store or website sells into Connecticut above $100,000 in gross sales OR 200 transactions, you register independently.

Connecticut Amazon FBA Sales Tax Guide — 2026

Updated 2026-05-31

If your Amazon business sells $100,000 or 200 transactions into Connecticut in a calendar year, you have economic nexus and must register, collect, and remit Connecticut sales tax.

Amazon FBA and sales tax in Connecticut

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

However, if Amazon stores your FBA inventory in a Connecticut 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 Connecticut

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

Common Amazon-seller mistakes in Connecticut

Assuming marketplace facilitator status covers everything — if Amazon stored your inventory in Connecticut, 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 Connecticut sales tax return as taxable when they should be reported as marketplace-facilitated (non-taxable for you). State form boxes vary.

Connecticut nexus note

Economic nexus in Connecticut requires BOTH more than $100,000 in gross sales AND more than 200 separate transactions delivered into Connecticut in the prior year. Both thresholds must be met.

What to do next

Read the full Connecticut 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 Connecticut in 2026?: For 2026, Amazon collects and remits Connecticut 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 Connecticut once those off-Amazon sales cross $100,000 in gross sales OR 200 transactions, and you may need Connecticut registration if FBA inventory is stored in-state.
Does Amazon FBA inventory in Connecticut create physical nexus?: Yes — Amazon storing your FBA inventory in a Connecticut fulfillment center generally creates physical nexus regardless of sales volume. Pull your Amazon Inventory Event Detail report and look for CT fulfillment-center activity; if present, Connecticut typically expects registration even when Amazon already collects sales tax on the facilitated orders.
Does Amazon collect Connecticut sales tax on my FBA orders?: Yes — Amazon is a marketplace facilitator in Connecticut and collects and remits Connecticut sales tax on your FBA and MFN sales automatically.
Do I still need to register in Connecticut as an FBA seller?: If Amazon stores your FBA inventory in Connecticut, you may have physical nexus and need to register for informational filing. Check your Amazon inventory reports for CT distribution.
What about direct-to-consumer sales outside Amazon?: Those are your responsibility. If your Shopify store or website sells into Connecticut above $100,000 in gross sales OR 200 transactions, you register independently.

Sources

date_retrieved: 2026-05-31