FishKillFleaMontana Fishing License Guide (2026)
Complete guide to Montana fishing licenses — conservation licenses, AIS pass, Bull Trout rules, and FAQs.
Overview of Montana Fishing Licenses
Montana is the undisputed epicenter of American fly fishing. Floating the Yellowstone, Madison, or Missouri rivers for massive brown and rainbow trout is a bucket-list trip for anglers worldwide. Montana Fish, Wildlife & Parks (FWP) requires anyone 12 years of age or older to possess a valid fishing license.
Montana’s licensing structure is highly modular and prioritizes ecosystem protection against invasive species. Therefore, you cannot simply buy a "fishing license." A legal Montana fishing setup requires three distinct components: a Conservation License, an Aquatic Invasive Species (AIS) Prevention Pass, and the Base Fishing License.
Real-World Application: Buying the Trinity
If you are an out-of-state visitor booking a drift boat trip out of Bozeman, your checkout cart on the FWP website will automatically populate several items. First, you must purchase the mandatory Conservation License (a prerequisite for all hunting/fishing in the state). Next, the system will add the AIS Prevention Pass (which funds mandatory boat inspection stations). Finally, you select your actual Fishing License—typically a 2-day, 10-day, or season pass.
While this sounds complex, it ensures that every person utilizing Montana’s waterways contributes directly to keeping those pristine rivers clear of zebra mussels and whirling disease.
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Bull Trout and Paddlefish Tags
While the standard fishing license covers native cutthroat and introduced brown/rainbow trout, Montana fiercely protects two highly vulnerable species. The native Bull Trout is federally protected. In the very few specific waters where you are legally allowed to target them (even for catch-and-release), you absolutely MUST obtain a free, mandatory Bull Trout Catch Card.
Furthermore, if you want to participate in Montana’s legendary spring Paddlefish season on the Yellowstone or Missouri rivers, you must enter special drawings or purchase highly limited Paddlefish Tags. Harvesting one of these prehistoric fish is strictly monitored, and mandatory reporting is legally enforced.
2026 Montana Fishing License Prices
Montana annual licenses expire the last day of February each year. All three components are required.
| License Type | Resident | Non-Resident |
|---|---|---|
| Conservation License (required) | $8 | $10 |
| AIS Prevention Pass (required) | $2 | $15 |
| Season Fishing License | $21 | $86 |
| 2-Day Fishing License | — | $25 |
| 10-Day Fishing License | — | $56 |
| Youth (12-17) | $5 (fishing only) | $15 (fishing only) |
| Youth (under 12) | Free | Free |
| Senior (62+, resident) | $10.50 (fishing) | — |
| Bull Trout Catch Card | Free | Free |
| Paddlefish Tag (lottery) | $10 | $10 |
Total cost calculation: A non-resident season angler pays: Conservation ($10) + AIS Pass ($15) + Fishing ($86) = $111 total. A resident pays: Conservation ($8) + AIS ($2) + Fishing ($21) = $31 total. The three-part structure confuses first-time buyers but is straightforward once understood.
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Real-World Scenarios: Montana Fishing License Applications
Scenario 1: Madison River Drift Boat Trip
A visiting angler from California books a 3-day guided drift boat trip on the Madison River near Ennis targeting brown and rainbow trout. License needed: Conservation ($10) + AIS Pass ($15) + 10-day Fishing ($56) = $81. The 10-day is better value than the 2-day ($25) for anything over 2 days. No trout stamp needed—all trout species are included.
Scenario 2: Yellowstone River Spring Float
A Billings resident plans a spring float on the Yellowstone River for cutthroat trout. License needed: Conservation ($8) + AIS Pass ($2) + Season Fishing ($21) = $31 total. If launching a boat, the boat must pass through a mandatory AIS inspection station. The AIS Pass funds these critical checkpoints.
Scenario 3: Bull Trout Catch-and-Release on the Flathead
An angler plans to specifically target bull trout in the Flathead River system. License needed: Full fishing license setup ($31 resident / $111 NR) + free Bull Trout Catch Card. Bull trout are federally threatened—catch-and-release ONLY in all Montana waters. The free Catch Card is mandatory and must be carried while fishing waters where bull trout are present.
Scenario 4: Paddlefish Snagging on the Yellowstone
Mike wants to snag paddlefish during the May-June season near Glendive. License needed: Full fishing license + Paddlefish Tag ($10) obtained through the FWP lottery. Tags are limited and highly sought-after. All harvested paddlefish must be checked in at a mandatory check station within 24 hours. The roe (caviar) is a prized byproduct.
Scenario 5: The Quick Weekend Trip
A Wyoming angler drives to Montana for a Saturday-Sunday weekend of fishing on the Bighorn River. License needed: Conservation ($10) + AIS Pass ($15) + 2-Day Fishing ($25) = $50 total. The 2-day license is valid for two consecutive days. The Bighorn River tailwater below Yellowtail Dam is one of the most productive trout fisheries in the world.
Scenario 6: Senior Resident Advantage
Bob is 64 and retired in Missoula. He fishes the Clark Fork, Bitterroot, and Blackfoot rivers year-round. License needed: Conservation ($8) + AIS Pass ($2) + Senior Fishing ($10.50) = $20.50. At nearly half the standard resident cost, Montana's senior discount rewards lifelong residents.
Scenario 7: Family Trip to Flathead Lake
A family (2 adults, 3 kids ages 14, 10, 8) from Oregon plans a week at Flathead Lake targeting lake trout and perch. Licenses needed: Both adults: Conservation ($10) + AIS ($15) + 10-day ($56) = $81 each. The 14-year-old: Conservation ($10) + AIS ($15) + Youth ($15) = $40. Ages 10 and 8 are FREE. Total: $202.
Scenario 8: The AIS Inspection Requirement
A visitor towing a boat from Idaho arrives at a Montana AIS inspection station. Problem: ALL watercraft entering Montana must stop at mandatory AIS inspection stations. Failure to stop is a misdemeanor with fines up to $1,000. Even kayaks, paddleboards, and float tubes must be inspected. The AIS Pass funds this critical program to keep zebra mussels out of Montana's rivers.
Top 5 Montana Fishing Destinations
1. Madison River (Southwest MT)
One of the most famous trout rivers in the world, flowing 183 miles from Yellowstone National Park to Three Forks. The "50-Mile Riffle" below Quake Lake produces incredible dry-fly fishing for brown and rainbow trout. License requirement: Full 3-part license. Access: Extensive public access from Yellowstone to Ennis; guided drift boats from Ennis and West Yellowstone. Best time: June-October; July-September is prime dry fly season.
2. Missouri River (Central MT)
The tailwater below Holter Dam near Craig is arguably the most productive trout river in North America, with fish counts exceeding 5,000 per mile. Outstanding for rainbow and brown trout on nymphs and dry flies. License requirement: Full 3-part license. Access: Craig is the hub; guided drift boats and wade access. Best time: Year-round; March-April for Skwala stoneflies; July-August for Trico hatches.
3. Bighorn River (South-Central MT)
A legendary tailwater flowing through the Crow Reservation. Produces trophy brown and rainbow trout in stunning canyon scenery. Fish counts rival the Missouri. License requirement: Full 3-part license + Crow Tribal recreation permit ($10/day) if fishing on reservation land. Access: Fort Smith; guided drift boats. Best time: Year-round; spring and fall for best dry-fly action.
4. Flathead Lake (Northwest MT)
The largest natural freshwater lake west of the Mississippi at 191 square miles. Excellent for lake trout (mackinaw), bull trout (C&R only), yellow perch, and whitefish. License requirement: Full 3-part license + Bull Trout Catch Card if targeting bulls. Access: Polson, Bigfork, and Somers provide marina access. Best time: Spring and fall for lake trout; summer for perch; winter ice fishing.
5. Yellowstone River (South-Central MT)
The longest undammed river in the lower 48 states, flowing 692 miles through Paradise Valley and the plains. Outstanding for native Yellowstone cutthroat trout, brown trout, and rainbow trout. License requirement: Full 3-part license. Access: Paradise Valley from Gardiner to Livingston; multiple public access sites. Best time: July-September after spring runoff clears; October for spawning browns.
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Penalties for Fishing Without a License in Montana
Legal Classification and Fines
Under Montana Code Annotated, fishing without a valid license is a misdemeanor:
- Fine: $50 to $1,000 for first offense
- Missing Conservation License: Separate citation
- Missing AIS Pass: Separate citation, $50-$500
- Bull trout harvest (illegal): $500-$2,000 plus per-fish restitution
- AIS station bypass: Misdemeanor, up to $1,000 fine
Additional Consequences
- Equipment confiscation: FWP wardens may seize fishing gear and illegally taken fish
- Restitution: Trophy trout carry restitution values; bull trout valued at $500-$1,000 per fish
- License revocation: Repeat offenders face suspension of all hunting/fishing privileges for 1-5 years
- Interstate compact: Montana participates in the Interstate Wildlife Violator Compact
Comparison with Neighboring States (2026)
| State | Resident Total | Non-Resident Total | Trout Stamp? | Key Differences |
|---|---|---|---|---|
| Montana | $31 | $111 | No | 3-part system; AIS Pass mandatory; bull trout C&R only; February expiration; paddlefish lottery |
| Idaho | $25.75 | $98 | Yes ($15.75) | Cheaper; steelhead/salmon permits; separate endorsements; 1-day options |
| Wyoming | $27 | $102 | No | Similar pricing; conservation stamp required; 1-day NR $14; Yellowstone Park separate |
| North Dakota | $16 | $42 | No | Much cheaper; salmon snagging restored 2026; walleye focused; simple licensing |
| South Dakota | $28 | $79 | No | Lower NR cost; 1-day options; walleye and bass focused; Great Lakes-style fisheries |
Key insight: Montana's $31 resident total is reasonable for world-class trout fishing, but the $111 non-resident total makes it one of the more expensive Western states. The mandatory AIS Prevention Pass is unique to Montana and reflects the state's aggressive stance against invasive species. The 2-day ($50 total NR) and 10-day ($81 total NR) options offer flexibility for visiting anglers.