Ice Fishing Laws in Montana: Licenses, Limits, Shelters, and Ice Rules
October 13, 2026
Ice fishing laws in Montana are shorter than most anglers expect, but the exceptions are where tickets come from. The statewide hole-size rule is simple, yet shelter removal, line counts, and vehicle access change from one lake to the next.
This article walks you through the licenses you need, how many lines you can fish, how big your hole can be, and what the rules say about shanties, bait, and driving on the ice. Regulations are set by Montana Fish, Wildlife & Parks (FWP) and revised each season, so treat this as a planning guide and confirm your exact water in the current FWP booklet.
Important Note: Montana’s fishing season runs March 1 through the end of February. The rules below draw on the FWP 2025-26 regulations and related sources, so check FWP for any changes that apply to your 2026-27 winter before you head out.
Do You Need a Fishing License to Ice Fish in Montana
Yes. To fish in Montana you need a Base Fishing License if you are 12 or older. You also need an Aquatic Invasive Species Prevention Pass.
If you plan to fish from a Fishing Access Site or Wildlife Management Area, you also need a Conservation License. Per FWP’s biologist quoted in the Lewistown News, full season licenses are good from March 1 to Feb 28/29 each year, so one license covers a full winter on the ice.
There are two add-ons to know. Bull trout fishing in Hungry Horse Reservoir, South Fork Flathead River, and Lake Koocanusa requires a catch-card, and paddlefish fishing requires an additional license or permit depending on the area. Nothing else extra is required for typical ice fishing.
Ice Fishing Seasons and Open Waters in Montana
Many Montana waters stay open through winter. The Daily Montanan reports that many of the state’s fishing spots are open in the winter, though regulations on what can be taken when, what bait can be used, and which places have seasonal closures should always be kept in mind.
Montana splits its regulations into Western, Central, and Eastern fishing districts, and each district lists exceptions for individual waters. Most waterbodies fall under the standard regulations for their district, but some have exceptions listed in the fishing regs. Look up your lake by name before you go.
Spearing is a good example of a local exception. In the Western District, spearing is open for northern pike through the ice only. In the Eastern District, spearing for chinook salmon and lake trout is permitted through the ice at Fort Peck Reservoir from December 1 to March 31. Our Montana spearfishing guide covers ice spearing in more detail.
Pro Tip: Search the FWP booklet for your lake’s name, not just your district. Waterbody exceptions override the standard district rule.
Line, Tip-Up and Hook Limits for Ice Fishing in Montana
The standard through-the-ice limit is two lines with two hooks each. The Western District rule reads 2 lines with 2 hooks per line on all lakes and reservoirs open to fishing. The Central District rule is 2 lines with 2 hooks per line through the ice on lakes, reservoirs, or ponds open to fishing.
Tip-ups and unattended rods are allowed, with a condition. Under Montana Code Annotated 87-6-501, taking any game fish through a hole in ice with an unattended line or rod is allowed as long as the angler is in the vicinity and within visual contact of the line or rod. You do not have to stand over each hole, but you cannot wander off.
Spears and bows count against your total. According to the FWP rules summarized by eRegulations, spears and bows are counted as lines for purposes of determining line limits.
| Rule | Western and Central Districts (Standard) |
|---|---|
| Lines allowed | 2 lines through the ice |
| Hooks per line | 2 |
| Angler position | In the vicinity and in visual contact with each line |
| Spears and bows | Count toward the line limit |
Ice Fishing Hole Size Rules in Montana
Montana keeps holes small. FWP’s 2025-26 booklet states that in waters not open to spearing, the maximum size hole that may be used for ice fishing is 144 square inches or 12 inches in diameter. A standard 8-inch auger sits comfortably under that limit, while a 12-inch hand or power auger is right at the edge.
Spearing is the exception. There is no size limit for a hole used for fishing with a spear. That makes sense, since spearing needs a wide opening, but it only applies on waters where spearing is open.
Smaller holes are also safer. Large openings stay open longer and can catch people and pets who walk across the ice after dark or in a whiteout. Mark any hole you leave behind.
Ice Shelter and Shanty Rules in Montana
You do not need a shelter to ice fish, but if you use one it must follow state rules. A shelter is defined as any hut or enclosure built of any material except ice or snow for the purpose of ice fishing. That means a pop-up tent counts the same as a wooden shanty.
Core requirements from the FWP regulations include:
- Identification: Identification must be painted or affixed to all unattended shelters in legible 2-inch letters visible at 100 feet. The 2022 booklet adds that identification must include the owner’s name and address, name and phone number, or an individual number issued by the department.
- Inspection: Each closed shelter must have a door an officer can readily open from the outside when it is occupied.
- Trash: Owners and occupants must keep shelters and the area around them free from rubbish, and anglers must remove waste before leaving for the day.
- End of season: Remove the shelter before it becomes irretrievable at the end of the season, or within five days of an FWP removal notice.
Some lakes require you to haul the shelter off every day. Daily removal is required on Browns Lake near Ovando, Echo Lake near Anaconda, and Georgetown Lake. In the Central District, daily removal applies at Fitzpatrick Lake, Deadmans Basin, and Helena Valley Regulating Reservoir. Attended shelters at Browns Lake and Georgetown Lake must also carry identification.
Bag, Size and Species Limits for Ice Fishing in Montana
Ice fishing uses the same daily and possession limits as open water, set by district and waterbody. Standard limits vary by species, so confirm the entry for your lake. Examples from FWP’s Western District listings include lake trout at 20 daily and 40 in possession and kokanee salmon at 10 daily and 20 in possession in some waters. Northern pike have no limit in the Western District.
Local limits can be much tighter. At Hyalite Reservoir, Friends of Hyalite notes that there is a daily limit of 5 for trout and grayling are catch-and-release only.
Keep your catch identifiable. All fish in possession must be visibly identifiable to species while you are on the ice. Two fillets count as one fish, and frozen fish must be packaged so each can be counted. Eating fish on the ice is fine, but the fish you eat are part of your daily limit.
Common Mistake: Fully filleting fish on the ice when a size limit applies. If a length limit covers the species, leave the whole fish intact so a warden can measure it.
Vehicle, ATV and Snowmobile Rules on the Ice in Montana
Montana’s statewide rules focus on thickness guidance rather than a ban, but individual waters can close the ice to motor vehicles. Friends of Hyalite notes that at that reservoir, motorized vehicle use is prohibited on the ice because it supplies drinking water, including vehicles, snowmobiles, ATVs, and motorcycles. Check local signs and the FWP booklet before you drive onto any lake.
Where driving is allowed, FWP’s ice safety page lists minimum thickness for good, clear ice:
| Activity | Minimum Clear Ice Thickness |
|---|---|
| Under 4 inches | Stay off |
| Walking or ice fishing on foot | 4 inches |
| Snowmobile or ATV | 7 inches |
| Small car | 10 inches (not recommended) |
| Larger vehicle | 12 inches (not recommended) |
FWP is blunt about the risk. On the question of whether ice is ever totally safe, its answer is short: no. You can’t judge thickness by looking, so drill a test hole and measure it.
- Never walk out on river ice.
- Never be the first on the ice.
- Use extra caution near docks, inlets and outlets, and springs.
- Blue or clear ice is usually hard and safer, while opaque, gray, or cloudy ice could signal weakness.
Pro Tip: Tell someone your lake and return time, and bring a partner. Both are on FWP’s own safety checklist, and neither costs anything.
Live Bait Rules for Ice Fishing in Montana
Bait rules depend on the water and district. According to Cast and Fly, worms, leeches, and insects are permitted in waters not restricted to artificial lures. The same source notes artificial-lures-only means no live or dead bait may be used. Look for that label on your lake’s listing.
Live fish are tighter. In the Central and Eastern Districts, live fish for bait are permitted only in specific, designated bodies of water. FWP’s booklet also warns that live bait fish may not be imported into Montana without authorization. Buy minnows locally from a licensed source and never dump leftover bait into the lake.
Breaking any of these rules has real consequences. Under MCA 87-6-501, a conviction carries a fine of $50 to $1,000, up to 6 months in the county detention center, or both. The court can also forfeit your fishing license and fishing privileges for a set period.
If you fish other Montana waters, our fly fishing regulations in Montana and bowfishing laws in Montana guides cover the open-water rules. Heading out of state with pets or gear? See our notes on pet import laws in Montana and animal cruelty laws in Montana if your dog is joining you on the ice.
Before each trip, pull up the current FWP regulations for your lake, confirm ice thickness with a drilled test hole, and label your shelter. Those three steps cover most of what wardens check.