Montana trailer and fifth wheel registration through ZeroTaxTags is $499 for a permanent plate (plus a Montana LLC from $175 and its registered agent if you do not have one yet). A trailer has no engine, so Montana registers it permanently at its first registration: travel trailers and fifth wheels (MCA 61-3-321(9)), and utility, cargo, equipment, horse and boat trailers under 26,000 lb declared weight (MCA 61-3-303(10)). No renewal while your LLC owns it, no inspection, no emissions, and Montana has no sales tax. Travel trailers, fifth wheels, toy haulers, cargo and enclosed trailers, utility and flatbed trailers, car haulers, horse and boat trailers, new or used, financed or paid off. The LLC holds the title and your lender keeps its lien. Plates ship in 3-5 business days, 100% remote, valid in all 50 states, money-back guarantee.