How does Amazon FBA sales tax work in South Dakota in 2026?

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

Does Amazon FBA inventory in South Dakota create physical nexus?

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

Does Amazon collect South Dakota sales tax on my FBA orders?

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

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

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

What about direct-to-consumer sales outside Amazon?

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

South Dakota Amazon FBA Sales Tax Guide — 2026

Updated 2026-04-27

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

Amazon FBA and sales tax in South Dakota

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

However, if Amazon stores your FBA inventory in a South Dakota 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 South Dakota

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

Common Amazon-seller mistakes in South Dakota

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

South Dakota nexus note

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

What to do next

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

Sources

date_retrieved: 2026-04-27