How to Register a Boat for Summer Fun in Montana
Montana requires all motorized boats to be registered with Fish, Wildlife & Parks before operating on public waters. The process involves titling and registration as separate steps, with fees based on vessel length and a mandatory aquatic invasive species decal.
- Registration requires proof of ownership, bill of sale, title application, photo ID, and hull identification number. Out-of-state boats need the original title and current registration certificate.
- Fees range from $21 to $60 for a two-year registration depending on boat length, plus a $4 AIS decal fee. First-time registrations must be done in person at FWP regional offices.
- Some boat owners register through a Montana LLC to avoid sales tax since Montana has none. TaxFree RV offers LLC formation services for high-value boat purchases.
To register a boat in Montana, visit Montana Fish, Wildlife & Parks (FWP) with your proof of ownership such as a bill of sale or manufacturer's certificate, valid identification, and payment for registration fees. Complete the registration application, and FWP will issue your registration numbers and decals. Registration must be completed before launching on Montana waters.
Montana’s rivers and lakes fill up fast once Memorial Day weekend hits. If your boat isn’t registered before the season opens, you’re stuck on shore watching everyone else launch. Boat registration in Montana is managed by Montana Fish, Wildlife & Parks (FWP), and the steps are straightforward — but only if you know exactly what’s required before you walk in the door.
This post walks you through every step of Montana boat registration, what documents you need, what it costs, and why some boat owners register through a Montana LLC to avoid paying sales tax entirely.
Why Boat Registration in Montana Matters Before Summer
Montana law requires all motorized watercraft to be registered with FWP before operating on public waters. That includes outboard motors, inboard motors, jet boats, and personal watercraft like Sea-Doos and Jet Skis.
Non-motorized boats — kayaks, canoes, and paddleboards — are exempt from registration. But the moment you add a trolling motor, registration is required.
Operating an unregistered motorized boat in Montana carries a fine. Game wardens check registration during peak summer months on Flathead Lake, Fort Peck Reservoir, and Canyon Ferry. Don’t wait until June to start this paperwork.
What You Need to Register a Boat in Montana
Montana FWP requires specific documents at the time of registration. Missing even one can delay your application.
Required Documents
- Proof of ownership — a signed title or Manufacturer’s Certificate of Origin (MCO) for new boats
- Bill of sale — required if the boat was purchased privately
- Montana title application — FWP Form 1 or county equivalent
- Valid photo ID
- Hull Identification Number (HIN) — located on the starboard stern of the boat
- Payment for registration fees
If the boat was previously registered in another state, you’ll need the out-of-state title and the current registration certificate. Montana won’t register a boat with a lien on the title until the lien is released.
Boats With No Title
Some older boats — especially those built before 1972 — may not have a title. Montana allows registration in these cases with a completed Affidavit of Ownership. The affidavit must describe the vessel, the HIN (or lack of one), and how ownership was acquired.
If the HIN is missing entirely, FWP assigns a new number and requires a physical inspection before registration is approved.
Montana Boat Registration Fees
Registration fees are based on the length of the vessel. Montana FWP charges the following for a standard two-year registration:
- Under 16 feet: $10.50 per year (billed as $21 for two years)
- 16 to 19 feet: $17.50 per year ($35 for two years)
- 20 feet and over: $30 per year ($60 for two years)
- Personal watercraft (PWC): $17.50 per year ($35 for two years)
Montana boat registrations run on a two-year cycle and expire on December 31 of the second year. If you register in October, you’re still paying for the full two-year period — the registration doesn’t reset from your purchase date.
FWP charges a $4 aquatic invasive species (AIS) decal fee on top of the base registration. This is mandatory and funds Montana’s zebra mussel and quagga mussel inspection stations at major boat launches.
Where to Register Your Boat in Montana
Montana boat registration happens at FWP regional offices and county treasurer offices. Not all county offices handle boat titling — some only process renewals.
For first-time titling and registration of a new or out-of-state boat, FWP regional offices are the safest bet. There are seven regional offices: Billings, Bozeman, Glasgow, Great Falls, Hamilton, Kalispell, and Miles City.
Montana does not currently offer online first-time boat registration. Renewals can be done online through the FWP portal, but new registrations require an in-person visit or a mail-in application with original documents.
How the Montana Title Process Works
Titling and registration are two separate steps in Montana. You title the boat first, then register it. Both are handled at the same FWP appointment, but the paperwork is distinct.
Step-by-Step: Titling a Boat in Montana
- Complete the Montana Motor Vehicle Title Application (Form MV1) — yes, boats use the same form as vehicles
- Attach your signed title or MCO from the seller
- Attach your bill of sale showing purchase price and date
- Pay the title fee — currently $10.30 for standard titling
- Submit to FWP or county treasurer
- Receive your Montana title (typically mailed within 2–4 weeks)
Once the title is issued, your registration is active immediately. You receive registration stickers to place on the bow of the hull — one on each side, per Montana law.
Sales Tax and the Montana LLC Advantage
Montana has no sales tax. That single fact changes the math for high-value boat purchases.
When you buy a boat in California, Florida, or Texas and register it in your home state, you pay that state’s sales tax at purchase — often 6% to 10% of the boat’s value. On a $150,000 center console, that’s $9,000 to $15,000 out the door before you ever touch water.
Registering a boat through a Montana LLC eliminates that sales tax obligation entirely. The LLC — formed in Montana — takes ownership of the vessel. The vessel is then titled and registered in Montana. No sales tax is owed because Montana doesn’t have one, and the LLC is the owner of record.
How TaxFree RV Handles This
TaxFree RV specializes in forming Montana LLCs for vehicle and boat registrations. The company sets up your LLC, registers it with the Montana Secretary of State, and handles the boat title and registration paperwork on your behalf.
This approach is legal and widely used for RVs, luxury vehicles, and high-value boats. The key is that the LLC must be properly formed and maintained — it’s a real business entity, not a shell created solely to dodge taxes in your home state.
If you’re buying a boat worth $75,000 or more, the cost of forming a Montana LLC through TaxFree RV is a fraction of what you’d pay in sales tax. The math is straightforward.
Reach out to TaxFree RV at 1-888-441-5741 or sales@taxfreerv.com to find out if this registration approach makes sense for your situation.
Posted on GoogleTransferring an Out-of-State Boat Registration to Montana
If you’re moving to Montana and bringing a boat registered in another state, you have 60 days to re-register in Montana after establishing residency.
The transfer process requires:
- Your out-of-state title (original, not a photocopy)
- Your current out-of-state registration certificate
- Proof of Montana residency (driver’s license, lease agreement, or utility bill)
- Completed Montana title application
- Payment of Montana registration fees
Montana will issue a new title in your name with a Montana registration number. Your old state’s registration number will be retired.
Aquatic Invasive Species: What Every Boat Owner Must Know
Montana takes AIS contamination seriously. It’s one of the few states where you can be turned away from a boat launch entirely if your boat hasn’t passed an inspection.
The AIS decal (included in your registration fee) must be displayed on your vessel. Game wardens and launch station inspectors check for it at major access points, especially on Flathead Lake, Glacier-area waters, and reservoir launches in eastern Montana.
If you’re trailering a boat from out of state — even for summer boating in Montana — you must stop at a mandatory inspection station. Boats coming from states with confirmed mussel infestations (Nevada, California, Colorado, and others) face mandatory decontamination before they enter Montana water.
Skipping an inspection station is a misdemeanor in Montana. FWP has stationed personnel at border entry routes during peak summer months. Don’t risk it.
Summer Boating Season: Timing Your Registration Right
Montana’s prime boating season runs from late May through mid-September. Ice-off on Flathead Lake averages around late April, and Canyon Ferry opens to serious boat traffic by early May.
FWP offices in Kalispell and Great Falls see their highest volume of boat registration applications in April and May. If you wait until Memorial Day weekend to register, you may face a 2–3 week backlog.
The smart move is to start your boat registration in Montana paperwork in late February or March. If you’re buying a new boat from a dealer, ask them to handle the MCO transfer as soon as the sale closes — don’t wait for the boat to be delivered.
Renewal Timing
Montana boat registrations expire December 31. Renewals open in October each year through the FWP online portal. Renewing early avoids the January and February rush, and you’ll have your new stickers in hand before ice-out.
Common Mistakes That Delay Registration
These are the errors that consistently slow down boat registration applications in Montana:
- Missing the seller’s signature on the title. An unsigned title is invalid. If the seller is out of state, get this handled before closing the deal.
- Incomplete bill of sale. Montana requires the purchase price, date, buyer and seller names, and HIN on the bill of sale.
- Lien not released. If the previous owner had a loan on the boat, the lienholder must sign off before the title transfers.
- Wrong office. Not all county treasurer offices process new boat titles. Call ahead.
- Photocopied documents. FWP requires original documents for first-time titling. Copies are rejected.
Get Your Boat on Montana Water This Summer
Boat registration in Montana requires a valid title, proof of ownership, and payment of FWP registration fees based on your vessel’s length. For new registrations, an in-person visit to a regional FWP office is required — online options are only available for renewals.
If you’re purchasing a high-value boat and want to avoid paying sales tax in your home state, registering through a Montana LLC is a legal, established strategy. TaxFree RV handles the LLC formation and registration paperwork so you can focus on getting out on the water.
Contact TaxFree RV at 1-888-441-5741, email sales@taxfreerv.com, or visit taxfreerv.com to start your Montana LLC boat registration before summer boating season arrives.