What is the Montana economic nexus threshold in 2026?

There isn't one. Montana imposes no general sales tax in 2026, so there is no dollar or transaction threshold at which a remote seller starts collecting Montana sales tax — no volume of Montana-destination sales creates a collection duty. You still owe sales tax in states that do impose one, so test each destination state against its own threshold rather than against Montana's.

What lookback period does Montana use for economic nexus?

None applies. A lookback window only matters where a state measures sales against a collection threshold, and Montana levies no general sales tax to collect. Where you do need a window is in the states that tax: those use four different patterns — a rolling preceding 12 calendar months (Texas), the preceding or current calendar year (California), the immediately preceding four sales tax quarters (New York), and the previous calendar year only (Florida).

Do my Montana sales count toward any other state's threshold?

No. Each state tests only the sales delivered into that state, so Montana revenue is invisible to every other state's threshold. Track your revenue per destination state rather than in aggregate.

Do I still need to register with Montana?

Not for sales tax — there is no Montana sales tax registration for a remote seller to obtain. Other business-level taxes can apply to in-state activity, so confirm what your presence triggers with the Montana revenue agency.

Montana Sales Tax Economic Nexus Threshold (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

Montana has no general sales tax

Montana does not levy a general state or local sales tax, so sales delivered into Montana carries no sales-tax registration, collection, or filing obligation — there is no economic nexus threshold to cross and no rate to charge.

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 still deserves a look in Montana

Sales-tax-free does not mean tax-free. Several no-sales-tax states impose other business-level taxes on in-state activity — confirm what applies to you with the Montana revenue agency.
Shipping from Montana changes nothing about your duties elsewhere. Sales delivered into other states are tested against those states’ thresholds, not Montana’s absence of one — start with the nexus calculator to see where you owe.
Storing inventory in Montana (a 3PL, an FBA centre, your own warehouse) creates no MT sales-tax duty, because there is no MT sales tax to collect.

Montana nexus note

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.

Thresholds sales tax in other states

Compare Montana's thresholds rules with nearby and similar states' thresholds sales tax guides:

Frequently asked questions

What is the Montana economic nexus threshold in 2026?: There isn't one. Montana imposes no general sales tax in 2026, so there is no dollar or transaction threshold at which a remote seller starts collecting Montana sales tax — no volume of Montana-destination sales creates a collection duty. You still owe sales tax in states that do impose one, so test each destination state against its own threshold rather than against Montana's.
What lookback period does Montana use for economic nexus?: None applies. A lookback window only matters where a state measures sales against a collection threshold, and Montana levies no general sales tax to collect. Where you do need a window is in the states that tax: those use four different patterns — a rolling preceding 12 calendar months (Texas), the preceding or current calendar year (California), the immediately preceding four sales tax quarters (New York), and the previous calendar year only (Florida).
Do my Montana sales count toward any other state's threshold?: No. Each state tests only the sales delivered into that state, so Montana revenue is invisible to every other state's threshold. Track your revenue per destination state rather than in aggregate.
Do I still need to register with Montana?: Not for sales tax — there is no Montana sales tax registration for a remote seller to obtain. Other business-level taxes can apply to in-state activity, so confirm what your presence triggers with the Montana revenue agency.

Sources

date_retrieved: 2026-06-20