What is the Montana economic nexus threshold in 2026?

For 2026, Montana's economic nexus threshold is Montana's economic nexus rules. Remote sellers measure Montana-sourced gross sales (typically over a rolling 12 months or the prior calendar year, depending on state rules) against this number to decide when registration begins.

What is the current Montana economic nexus threshold?

Montana's economic nexus rules. Sales through marketplace facilitators are usually excluded from this count.

What counts toward the Montana threshold?

Gross sales of tangible personal property and most services into Montana, including resale transactions in some states. Marketplace-facilitated sales are typically excluded; check the specific rule.

How often is the Montana threshold recalculated?

Most states apply a rolling 12-month lookback (some use the prior calendar year). You cross the threshold when your trailing-12-months sales exceed the dollar or transaction count.

Montana Sales Tax Economic Nexus Threshold (2026)

Updated 2026-04-27

Montana's economic nexus threshold, in detail

The current Montana threshold is the state's economic nexus rules (pending data verification).

What counts toward the threshold: gross sales of tangible personal property AND most services delivered to Montana customers. Resale sales may count in some states. Marketplace-facilitated sales typically do NOT count. Check the state's specific definitions before computing.

Counting periods

Most states apply the threshold on a rolling 12-month basis — look at the prior 12 months as of the end of each month. Some states look at the prior calendar year specifically. Montana's rule is stated in its regulations; your registration must begin no later than the first day of the month after you cross, unless the state allows a grace period.

Common threshold-tracking mistakes

Measuring by calendar year only, missing when a rolling 12-month window would have triggered earlier.
Including tax in “gross sales”. The threshold uses pre-tax revenue; double-counting tax in the threshold figure can prematurely trigger registration.
Forgetting that the threshold resets — falling below in a subsequent year doesn't automatically deregister you. You must request deregistration through the Montana DOR.

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

What is the Montana economic nexus threshold in 2026?: For 2026, Montana's economic nexus threshold is Montana's economic nexus rules. Remote sellers measure Montana-sourced gross sales (typically over a rolling 12 months or the prior calendar year, depending on state rules) against this number to decide when registration begins.
What is the current Montana economic nexus threshold?: Montana's economic nexus rules. Sales through marketplace facilitators are usually excluded from this count.
What counts toward the Montana threshold?: Gross sales of tangible personal property and most services into Montana, including resale transactions in some states. Marketplace-facilitated sales are typically excluded; check the specific rule.
How often is the Montana threshold recalculated?: Most states apply a rolling 12-month lookback (some use the prior calendar year). You cross the threshold when your trailing-12-months sales exceed the dollar or transaction count.

Sources

date_retrieved: 2026-04-27