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?

Storing inventory in a state is the classic physical-presence trigger across US states, and it applies regardless of sales volume. Pull your Amazon Inventory Event Detail report and look for SD fulfillment-center activity. Whether South Dakota then requires a registration when a marketplace facilitator already collects on all your South Dakota orders is a per-state rule — some states want the registration for information reporting, others do not — so confirm South Dakota's position with the South Dakota Department of Revenue before you register or skip it.

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 2026-07-20

Reviewed by Nexus by State research team using official state tax sources. Last reviewed 2026-07-20.

Guide content last reviewed: 2026-07-20

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

South Dakota has a marketplace facilitator law, so Amazon calculates, collects, and remits South Dakota sales tax on the FBA and MFN orders it facilitates for you. You do not collect tax on those transactions yourself.

Separately, if Amazon stores your FBA inventory in a South Dakota warehouse, you may have physical nexus — independent of the economic threshold. Whether that alone obliges you to register when a facilitator already remits the tax is a per-state question; several states say yes 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

South Dakota sales tax nexus and economic nexus threshold: a remote seller must register and collect South Dakota sales tax once gross sales delivered into South Dakota exceed $100,000 in the previous or current calendar year. South Dakota — the state behind South Dakota v. Wayfair — eliminated its original 200-separate-transaction test effective July 1, 2023 under Senate Bill 30, so the trigger is now sales-only with no transaction count. Marketplace facilitators (Amazon, eBay, Etsy, Walmart) with more than $100,000 in South Dakota sales must collect and remit on facilitated sales, and sales made through a marketplace still count toward a remote seller's own $100,000 threshold even when the marketplace already collects the tax. South Dakota imposes a 4.2% statewide sales/use tax plus municipal sales taxes. South Dakota Department of Revenue source data last retrieved 2026-06-14.

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.

Amazon sales tax in other states

Compare South Dakota's amazon rules with nearby and similar states' amazon sales tax guides:

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?: Storing inventory in a state is the classic physical-presence trigger across US states, and it applies regardless of sales volume. Pull your Amazon Inventory Event Detail report and look for SD fulfillment-center activity. Whether South Dakota then requires a registration when a marketplace facilitator already collects on all your South Dakota orders is a per-state rule — some states want the registration for information reporting, others do not — so confirm South Dakota's position with the South Dakota Department of Revenue before you register or skip it.
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: 2026-06-14