How to Register an Out-of-State Car in Wyoming: Fees & Steps

How to Register an Out-of-State Car in Wyoming: Fees & Steps

Wyoming registers vehicles through county treasurer offices rather than a central state DMV, and one detail about the deadline is worth correcting up front, since it's stated wrong on more than one site currently covering this topic.

How to Register an Out-of-State Car in Wyoming

Wyoming law requires registration as soon as you become a Wyoming resident, there's no numbered grace period like "30 days" for this specific situation, despite what a few other guides claim. You'll register in person at your county treasurer's office (no online or mail option for a first-time out-of-state transfer), with your out-of-state title, proof of insurance, a VIN inspection completed by a Wyoming law enforcement officer, and payment of your state fee, county fee, and any use tax owed.

The Deadline Most Guides Get Wrong

This is worth being precise about, because it's a real legal requirement, not a stylistic detail. Wyoming Statute §31-2-201 sets out different timelines for different situations:

• Vehicle acquired at auction: 60 days, with a notarized bill of sale
• Private-party purchase: 45 days, with a properly executed title
• Becoming a Wyoming resident with an existing out-of-state vehicle: the statute simply says registration is due upon becoming a resident. No specific day count is attached to this clause.

Some third-party sites state a flat "30 days" for new residents. That number doesn't appear in the actual statute for this situation, it's likely being borrowed from the purchase or transfer timelines and misapplied. The safer approach: register with your county treasurer as soon as you've established residency, don't plan around a grace period that may not exist. If you want it confirmed in writing for your specific county, ask your treasurer's office directly.

You're considered a Wyoming resident once you:

• Work in Wyoming while owning, renting, or leasing a residence here
• Purchase or hold a current Wyoming resident hunting or fishing license
• File a homestead tax exemption
• File a military tax exemption
• Live in Wyoming for 120 days or more

What You'll Need

• Completed Application for Certificate of Title and VIN/HIN Inspection (Form MV-300A)
• Your out-of-state title
• Proof of current auto insurance
• A VIN inspection, performed specifically by a Wyoming law enforcement officer for an out-of-state vehicle being titled here for the first time ($10 fee)

Requirements can vary somewhat by county, so it's worth confirming specifics with your local county treasurer before your visit.

How Wyoming Calculates Your Registration Fee

This is genuinely different from a flat annual fee. Wyoming's registration combines two pieces:

A state fee based on vehicle type: $30 for passenger vehicles, $5-$90 for trucks and trailers depending on class, $25 for motorcycles, and $30-$90 for campers.

A county fee, calculated as a depreciating property-style charge:

Factory Cost × Year-of-Service Rate × 0.03 = County Fee

The "year-of-service rate" declines as your vehicle ages, similar in spirit to how Montana and a few other states tie registration cost to a vehicle's age rather than charging the same flat amount regardless of how old it is. Because the underlying factory cost and the applicable rate vary, and county fees can differ slightly from one treasurer's office to the next, an exact number is best confirmed directly with your specific county or estimated with our Wyoming Vehicle Registration Fees Calculator.

Do You Owe Use Tax?

Wyoming charges a 4% state sales and use tax on motor vehicle transactions, plus an additional county rate. If you already paid sales or use tax on the vehicle in your previous state, ask your county treasurer whether that's creditable toward what Wyoming would otherwise charge, this isn't always offered automatically, so it's worth asking rather than assuming it doesn't apply.

Temporary Options While You Sort Out Registration

If you're working in Wyoming temporarily without becoming a full resident, a temporary worker registration permit is available for $50 per month (up to 180 days per vehicle), as long as your vehicle still carries valid out-of-state plates and insurance. This is a legitimate alternative for someone employed in Wyoming on a temporary or full-time basis who isn't ready to fully transfer registration.

Renewal and Late Registration

Wyoming registration is annual, expiring on the last day of your designated month. There's no grace period once your plates expire, driving the day after is a citable traffic violation, but the renewal fee itself doesn't increase for being late, unlike some states that add escalating percentage-based penalties the longer you wait.

Military Members

Non-resident military members stationed in Wyoming aren't required to register their vehicle here, as long as it stays validly registered and insured in their home state. They can choose to register in Wyoming anyway to access certain state tax exemptions. Wyoming residents serving in the military follow the same registration process as any other resident. If you're deployed outside the continental U.S. for 90 days or more and your Wyoming registration expires during that deployment, you have 14 days after returning to renew without penalty.

The Bottom Line

Registering an out-of-state car in Wyoming means a trip to your county treasurer's office, a law-enforcement VIN inspection, and a fee that combines a flat state charge with a county-level, age-based calculation rather than one simple number. The most important thing to get right: there's no confirmed grace period for new residents the way there is for a purchase or transfer, register as soon as you're settled rather than counting on a specific number of days.

For your exact Wyoming registration cost, use our Wyoming Vehicle Registration Fees Calculator.