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

For 2026, Montana's marketplace facilitator treatment for Amazon is pending verification. If Montana has not adopted MF rules, you collect Montana sales tax yourself on all FBA-fulfilled orders once you cross Montana's economic nexus rules in Montana-destination revenue.

Does Amazon FBA inventory in Montana create physical nexus?

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

Does Amazon collect Montana sales tax on my FBA orders?

Montana marketplace facilitator status is pending verification.

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

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

What about direct-to-consumer sales outside Amazon?

Those are your responsibility. If your Shopify store or website sells into Montana above Montana's economic nexus rules, you register independently.

Montana Amazon FBA Sales Tax Guide — 2026

Updated 2026-04-27

Amazon FBA and sales tax in Montana

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

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

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

Common Amazon-seller mistakes in Montana

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

Montana nexus note

Montana has no general state or local sales tax. Sellers shipping to Montana customers do not need to register or collect. Exceptions: certain resort-area local option taxes and accommodations/rental car taxes apply to specific industries.

What to do next

Read the full Montana 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 Montana in 2026?: For 2026, Montana's marketplace facilitator treatment for Amazon is pending verification. If Montana has not adopted MF rules, you collect Montana sales tax yourself on all FBA-fulfilled orders once you cross Montana's economic nexus rules in Montana-destination revenue.
Does Amazon FBA inventory in Montana create physical nexus?: Yes — Amazon storing your FBA inventory in a Montana fulfillment center generally creates physical nexus regardless of sales volume. Pull your Amazon Inventory Event Detail report and look for MT fulfillment-center activity; if present, Montana typically expects registration even when Amazon already collects sales tax on the facilitated orders.
Does Amazon collect Montana sales tax on my FBA orders?: Montana marketplace facilitator status is pending verification.
Do I still need to register in Montana as an FBA seller?: If Amazon stores your FBA inventory in Montana, you may have physical nexus and need to register for informational filing. Check your Amazon inventory reports for MT distribution.
What about direct-to-consumer sales outside Amazon?: Those are your responsibility. If your Shopify store or website sells into Montana above Montana's economic nexus rules, you register independently.

Sources

date_retrieved: 2026-04-27