Moving Cattle Across State Lines to Montana: CVIs, Brand Inspections, and Entry Permits Explained

Moving cattle across state lines to Montana is not a paperwork afterthought you handle at the scale house. The Montana Department of Livestock (MDOL) treats every load differently depending on the class of cattle, where they originated, and what they’re moving into the state to do.

Skip a required test or show up without a current Certificate of Veterinary Inspection, and you risk a rig held at the border, a fine, or animals turned back at your expense. This breakdown walks through what you need class by class, test by test, and paper by paper before you point a trailer north.

Pro Tip: Call the MDOL Animal Health Bureau before you load, not after. Rules tied to disease status in the origin state can change with little public notice.

Cattle Class and Purpose of the Move Into Montana

What you owe Montana depends heavily on the class of animal and why it’s crossing the line. A load of steers headed to a feedlot faces different scrutiny than sexually intact breeding heifers, and both look different again from cattle entered for a rodeo or roping event.

Animals entering for rodeo or roping events require one negative TB test within 12 months prior to entry under ARM 32.3.212, a rule that would not apply if the same animals were simply moving to a Montana pasture lease. Sex matters too: intact bulls and breeding females typically draw closer disease scrutiny than steers or spayed heifers destined for a feedlot.

If you’re sorting a mixed load by breed and class before you commit to a permit, it helps to understand how different cattle breeds are typically classified for health paperwork, since dairy-type animals trigger separate rules covered later in this guide.

Official Identification and RFID Tags for Interstate Cattle

Montana’s traceability program leans on official identification tied to each animal’s health certificate. Per MDOL’s traceability guidance, official identification means an 840-RFID tag, paired with an Interstate Certificate of Veterinary Inspection (ICVI), also known as a health certificate.

All sexually intact animals require official ID, with an exception for animals moved directly to an approved tagging site, provided the CVI states the animals are moving to an approved tagging site. That exception matters if you’re buying cattle that haven’t been tagged yet and plan to route them through a facility that applies RFID tags on arrival.

Destination rules aren’t always symmetrical. If you’re later shipping cattle out of Montana, always check the destination state, since some states accept an alternate approved form of official ID, such as a brand inspection or breed tattoo, instead of an RFID tag. Ranchers comparing outbound requirements often reference how moving cattle across state lines to Wyoming or moving cattle across state lines to Wisconsin differs, since both states weigh RFID and brand-based ID differently.

Disease Tests and Vaccinations Montana May Require

Tuberculosis and brucellosis sit at the center of Montana’s cattle import testing. For sexually intact beef and dairy cattle, common practice documented at Montana livestock shows follows the state’s underlying rule: one negative TB test within 60 days prior to importation, or origination from a USDA-APHIS-VS accredited TB-free herd, or a herd with a negative whole-herd test within six months, with the herd accreditation number and test date listed on the CVI.

Brucellosis vaccination for female cattle is another common trip-up. Import guidance for Montana livestock events flags lack of brucellosis vaccination for female cattle as one of the most frequent reasons paperwork gets rejected at the gate.

Geography inside the origin state can also matter. Ranches near Yellowstone sit inside brucellosis surveillance zones where testing gets stricter; one regional guide notes that counties within Montana’s Brucellosis Designated Surveillance Area carry vaccination and traceability requirements for adult, sexually intact females, plus additional testing for certain movements. Breeding bulls face their own screening: MDOL’s import rules for certain bulls call for one negative PCR test within 60 days, with pooled PCR acceptable, though the test becomes void once the bull comingles with female cattle before entry.

Test or Requirement	Who It Applies To	Typical Window Before Entry
TB test	Sexually intact beef and dairy cattle	60 days (or accredited herd status)
Brucellosis vaccination	Female cattle	Must be current, noted on CVI
Bull PCR test	Breeding bulls	60 days; void if comingled with females
TB test for rodeo/roping stock	Exhibition and event cattle	12 months

Disease rules also shift with outbreaks in the origin state. Cattle from Colorado must currently have a CVI issued within seven days of entry into Montana because of active vesicular stomatitis cases in that state, a reminder that these requirements are not static year to year.

Extra Rules for Dairy Cattle, Including HPAI / H5N1 Testing

Dairy cattle carry an added layer tied to highly pathogenic avian influenza. Since the virus was first confirmed in U.S. dairy herds, a federal order in effect since April 29, 2024 has required testing of lactating dairy cattle for H5N1 prior to interstate movement, along with reporting of positive results to USDA APHIS.

USDA later layered on the National Milk Testing Strategy. A December 2024 Federal Order requires that raw, unpasteurized milk samples nationwide be collected and shared with USDA for testing, and that order works alongside, rather than replacing, the original interstate movement testing rule.

The rule has since eased for herds in cleared states. Lactating dairy cattle moving interstate from states with Unaffected State Status under the National Milk Testing Strategy are no longer required to test for HPAI H5N1 prior to movement. Montana applies this distinction directly at its border: cattle from states that do not have Unaffected Status under the National Milk Testing Strategy must have a negative influenza A test at a NAHLN lab within seven days prior to movement, using PCR on individual cows.

Important Note: Unaffected State Status can change as USDA updates its list. That status requires ongoing testing and surveillance activities to confirm the absence of HPAI in a state’s dairy herds, so confirm your origin state’s current status before assuming your dairy load is exempt.

The USDA APHIS testing page tracks which programs feed into this system, and the American Veterinary Medical Association maintains a running list of states where H5N1 has been confirmed in dairy herds.

Certificate of Veterinary Inspection (CVI / ICVI)

The CVI, sometimes labeled an Interstate Certificate of Veterinary Inspection or ICVI, is the backbone document for any interstate cattle move. In Montana, the health certificate must generally be issued within 30 days of entry under ARM 32.3.202 and ARM 32.3.206, though disease-specific exceptions shorten that window.

Your accredited veterinarian issues the CVI, and it needs to match the load exactly. Official ID numbers, test results, vaccination dates, and a description of each animal all need to appear on the certificate itself, not just in your own records. A mismatch between the CVI and the animals in the trailer is one of the fastest ways to get flagged at a port of entry.

Electronic CVIs have simplified part of this process. An import permit is only required for handwritten CVIs issued on paper, not for electronic health certificates, per ARM 32.3.207. If your vet’s clinic still issues paper certificates, budget extra lead time to secure the matching permit.

Entry Permits From Montana Animal Health

Assuming your CVI is electronic, you may not need a separate import permit at all. When one is required, you can call 406-444-2976 to request it, and MDOL recommends your veterinarian handle that call while issuing the CVI itself.

Special circumstances change the permit picture. Under a 2026 emergency order tied to New World Screwworm detections, cattle, bison, and several other species originating from an infested zone must have an import permit from the Department along with a CVI documenting a copy of the movement permit or other official document from the origin state. That order specifically targets states with NWS infestations, stopping entry until specific myiasis control measures have been met, and as of mid-2026 it applies to Texas and New Mexico origin animals.

If your operation also ships to neighboring states, permit rules rarely match up one to one. Producers who split shipments between Montana and other western markets often check Wyoming’s interstate cattle rules alongside Montana’s, since a permit that satisfies one state’s port of entry won’t automatically clear the other. For the latest wording on any active order, the Montana Department of Livestock’s official order page is the primary source, not a summary blog.

Brand Inspection and Proof of Ownership

Montana runs one of the oldest brand inspection programs in the country, and it applies to more than just intrastate sales. Brand inspection is required for cattle and horses before crossing a county line or leaving the state, before a change of ownership, before sale at a livestock auction, and before slaughter at a licensed establishment.

Timing rules are stricter than most people expect. All brand inspections must be made in daylight, and the inspection includes an examination of the livestock and all marks and brands to identify ownership. Proof of ownership isn’t optional paperwork either: a bill of sale or the most recent brand inspection is required to prove ownership, and any bill of sale must be signed by the seller and adequately describe the livestock sold.

Cattle arriving from states without their own brand inspection programs aren’t automatically exempt. Animals originating from a state that does not have official brand inspections may obtain one upon arrival in Montana, and import permits for these loads should be obtained by the accredited veterinarian issuing the CVI within days prior to arrival.

Not every state leans on brand law the way Montana does. Louisiana, for example, structures its livestock branding rules differently, and comparing cattle branding laws in Louisiana against Montana’s system shows how much variation exists state to state. Ownership disputes don’t end at the state line either; ranchers dealing with strays or fence breaks after arrival should also understand cattle trespass laws in Montana, since brand records often become the deciding evidence in those cases.

Direct-to-Slaughter, Market, and Other Limited Pathways

Not every load needs the full CVI-plus-ID-plus-brand-inspection package. Federal rule carves out exceptions for specific, tightly controlled movement paths.

Pathway	CVI Required	Official ID Required
Farm of origin directly to market	No	Yes, unless restricted to slaughter
Direct to federally approved slaughter	Yes	Exempt if backtag applied
Federally approved market, slaughter-only	Yes	May be exempt
Standard interstate move (breeding, feeder, dairy)	Yes	Yes

Animals moving from farm of origin to market do not require a CVI under 9 CFR Part 78.9(a)(3)(i), and animals moving direct to slaughter are exempt from official ID requirements if moved with a backtag, or if a backtag is applied upon arrival at slaughter. Federally approved markets get similar latitude: these facilities may accept animals without official identification if the animals are restricted to slaughter only.

Inside Montana, similar shortcuts exist for moving stock between counties. Market consignment permits cover livestock consigned and delivered directly to an auction in another county, while transportation permits cover delivery to a licensed slaughter facility or authorized shipping point, letting livestock cross county lines without a brand inspection at origin as long as the inspection happens at the destination. If you’re weighing whether your specific move qualifies, the rules around transporting livestock in Montana lay out the county-level mechanics in more detail.

Papers That Must Travel With the Load

Everything discussed above collapses into a stack of documents that need to physically ride with the animals, not sit in an office file. At minimum, plan on carrying:

• The Certificate of Veterinary Inspection (CVI/ICVI), issued within the required window and matching official ID numbers exactly
• An import permit, if your CVI was issued on paper rather than electronically
• Current brand inspection certificate or a signed bill of sale describing the livestock
• Disease test results referenced on the CVI, including TB, brucellosis, or HPAI documentation where applicable
• Any New World Screwworm movement permit or origin-state documentation, if the load originated in an affected zone

Guidance aimed at brand-inspection compliance is consistent on this point: keep the brand inspection certificate, any bills of sale describing the livestock, the CVI for animals entering Montana, and any MDOL import permit together with the load. Digital copies on a phone can work in a pinch, but a paper set in the truck cab avoids delays if you lose signal at a remote port of entry.

Pre-Load Checklist Before You Cross Into Montana

Run through this sequence before the trailer leaves the origin ranch:

1. Confirm the class and purpose of the move (breeding, feeder, dairy, slaughter, or exhibition), since that determines which tests apply
2. Verify official ID is applied, or confirm the CVI states the animals are moving to an approved tagging site
3. Complete required disease testing (TB, brucellosis vaccination, bull PCR, or HPAI test) within the applicable window
4. Have your accredited veterinarian issue the CVI within 30 days of entry, or within 7 days if the origin state has an active disease alert
5. Request an import permit if the CVI is handwritten, or confirm none is needed for an electronic certificate
6. Arrange a brand inspection or gather a signed bill of sale before the animals change hands or leave the county
7. Check whether the origin state or county falls under any active New World Screwworm or other emergency order
8. Pack physical or digital copies of every document in the vehicle, not just in trailer paperwork
9. Call MDOL directly to confirm nothing has changed since your last shipment

Pro Tip: If you’re also comparing rules for a different destination, the compliance steps for moving cattle across state lines to Wisconsin or cattle trespass laws in Oregon can differ enough that copying a Montana checklist for another state will leave gaps.

Where to Confirm Current Montana Cattle Import Rules

Rules tied to disease outbreaks, like the current New World Screwworm restrictions or HPAI testing thresholds, change faster than most printed guides can track. Treat this article as a starting framework, then verify directly before you load.

The primary source is MDOL’s own import requirements page, which lists species-specific rules updated as orders change; you can review it directly at Montana’s Import Requirements portal. For permit-specific questions, MDOL’s Permit Contact Information page lists direct phone and email routes to the Animal Health Bureau, while brand inspection questions go through the Brands Enforcement Division.

Federal HPAI testing status by state is tracked separately through USDA. Check the APHIS interstate movement guidance page before assuming your dairy herd’s origin state still requires, or is still exempt from, pre-movement testing. If your operation also handles other livestock alongside cattle, cross-check species-specific pages like goat ownership laws in Montana or Montana’s general pet and animal import laws, since mixed loads sometimes trigger more than one set of paperwork at the same checkpoint.

Important Note: This article summarizes publicly available Montana Department of Livestock and USDA APHIS guidance as of September 2026. It is not a substitute for direct confirmation with MDOL or your accredited veterinarian, since disease-status orders and permit requirements can change with little advance notice.