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

For 2026, Amazon collects and remits California 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 California once those off-Amazon sales cross $500,000, and you may need California registration if FBA inventory is stored in-state.

Does Amazon FBA inventory in California create physical nexus?

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

Does Amazon collect California sales tax on my FBA orders?

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

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

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

What about direct-to-consumer sales outside Amazon?

Those are your responsibility. If your Shopify store or website sells into California above $500,000, you register independently.

California Amazon FBA Sales Tax Guide — 2026

Updated 2026-05-21

If your Amazon business sells $500,000 into California in a calendar year, you have economic nexus and must register, collect, and remit California sales tax.

Amazon FBA and sales tax in California

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

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

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

Common Amazon-seller mistakes in California

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

California nexus note

California sales tax nexus and economic nexus threshold: CDTFA guidance says remote retailers must register and collect California use tax when total combined sales of tangible personal property for delivery into California exceed $500,000 during the preceding or current calendar year. California uses a sales-only threshold — no transaction-count test. AB 147 replaced the earlier $100,000/200-transaction Wayfair threshold with the current $500,000 standard, and related-person sales count toward the threshold. CDTFA marketplace guidance says sellers include both direct California sales and marketplace-facilitated sales when testing the $500,000 threshold, but sellers whose California sales are entirely facilitated by registered marketplace facilitators may not need separate registration for those marketplace transactions. Direct-to-consumer sales outside a marketplace remain the seller's own collection responsibility once California nexus is met.

What to do next

Read the full California 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 California in 2026?: For 2026, Amazon collects and remits California 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 California once those off-Amazon sales cross $500,000, and you may need California registration if FBA inventory is stored in-state.
Does Amazon FBA inventory in California create physical nexus?: Yes — Amazon storing your FBA inventory in a California fulfillment center generally creates physical nexus regardless of sales volume. Pull your Amazon Inventory Event Detail report and look for CA fulfillment-center activity; if present, California typically expects registration even when Amazon already collects sales tax on the facilitated orders.
Does Amazon collect California sales tax on my FBA orders?: Yes — Amazon is a marketplace facilitator in California and collects and remits California sales tax on your FBA and MFN sales automatically.
Do I still need to register in California as an FBA seller?: If Amazon stores your FBA inventory in California, you may have physical nexus and need to register for informational filing. Check your Amazon inventory reports for CA distribution.
What about direct-to-consumer sales outside Amazon?: Those are your responsibility. If your Shopify store or website sells into California above $500,000, you register independently.

Sources

date_retrieved: 2026-05-21