EIN Registration

How to Apply for an EIN in Montana

Last updated September 22, 2026 · Written by the EIN Registration filing team

The EIN application is federal and identical in every state. There is no Montana EIN, no Montana form, and no Montana office involved: you file IRS Form SS-4 and the IRS issues the number. What is genuinely different in Montana is what happens on either side of it — the Montana Secretary of State filing that has to exist first, and the state registrations that need the EIN once you have it.

Get the EIN for your Montana business

Pick your entity type and we take it from there: our specialists prepare the SS-4 with the name and formation date exactly as the state recorded them, file it, and email you the EIN, typically within 2 to 4 business days (7 to 10 if it has to go by fax).

LLC →Corporation →Sole Proprietor →Partnership →Trust →Estate →

The EIN step itself

One federal form, one agency, the same options wherever the business sits: online, fax, mail, or the international phone line. The method decides the timeline, not the state. Every method and what it actually takes covers that in full, and it applies to Montana unchanged.

What Montana needs first

Form your entity with the Montana Secretary of State before applying. The IRS asks for the legal name and formation date exactly as the state recorded them, and a mismatch is one of the common causes of a rejected application.

Montana assigns its own filing number. It identifies your company in state records and is not a tax ID. It cannot be used where an EIN is asked for, and the IRS has no record of it.

What Montana requires once you have the EIN

  • Register with the Montana Department of Revenue through the TransAction Portal (TAP), or on Form GenReg, for a withholding account once the LLC has employees working in Montana; the application asks for the EIN and the legal business name associated with it.
  • File the annual report with the Secretary of State through biz.sosmt.gov between January 1 and April 15 every year, starting the year after the LLC is formed.

What is actually different about Montana

  • Montana has no general sales tax, so most Montana LLCs never register for a seller's permit. To buy inventory tax-free from an out-of-state vendor, a Montana business can offer the Montana Business Registry Resale Certificate, which identifies it by its Secretary of State business registration number rather than a state sales tax number; the vendor may accept it but does not have to.
  • Lodging is the main exception to Montana's lack of a sales tax. Hotels, campgrounds and vacation rentals collect the lodging facility sales and use tax, and each lodging accommodation must apply to the Department of Revenue for a seller's permit before doing business; short-term rental marketplaces collect the tax on bookings they facilitate.
  • A Montana professional LLC files more than the Secretary of State's annual report: before April 15 each year it also files a statement of qualification, listing its members and managers, with each licensing authority that governs the professional services named in its articles of organization.

Get Your EIN the Easy Way

Answer a few questions in about 5 minutes. Our specialists prepare your IRS Form SS-4, file it, personally handle any rejection or name conflict along the way, and get your EIN to you, typically within 2 to 4 business days, or 7 to 10 when the IRS requires the application by fax. One flat $197 service fee. No upsells, no subscriptions.

  • ✓ Prepared and filed by specialists
  • ✓ Error 101 and rejection handling included
  • ✓ Data encrypted (AES-256)
  • ✓ Order tracking and email updates
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EIN Registration is an independent document preparation and filing service and is not affiliated with the IRS or any government agency. You can also apply for an EIN directly with the IRS at irs.gov at no cost.