California has spent years living with a weird little workaround that let some drivers sidestep the state’s steep car costs, and a new law is aimed straight at that trick. The change targets out-of-state shell companies, especially Montana LLCs, that were being used to dodge taxes and registration fees on pricey vehicles. It lands in a state where cars are essential, ownership is expensive, and loopholes rarely stay quiet for long.
Californians depend on cars more than people in a lot of other states, especially in places where transit just does not cover daily life. At the same time, the state has built a reputation for making vehicle ownership costly through fees, taxes, and rules that hit hard. That mix created an opening for drivers looking for any legal-looking escape hatch they could find.
The Montana setup became one of the most talked-about versions of that escape hatch. Instead of registering a car in a personal name in California, some owners formed an LLC in another state, then put the vehicle under that company’s name. Montana was a favorite because it has no sales tax and a reputation for making the process easier.
In practice, the scheme was especially popular with owners of exotic cars, RVs, and other expensive machines where the savings could be huge. Some LLCs had legitimate business purposes, but plenty were created for one reason only: keep California from getting its cut. That made the whole thing look less like clever planning and more like a tax dodge with a shiny paint job.
California’s new law, Senate Bill 1406, goes after that setup by making it harder for residents to hide behind an out-of-state company. If a partner, manager, or owner of the shell company is a California resident, assets tied to that company and located in California can be taxed by the state. It also puts LLC partners on the hook for unpaid vehicle taxes, with nonpayment potentially treated as a crime.
That is the real sting here. The law does not just say the state disapproves, it gives California a sharper tool to collect what it believes is owed. For anyone who thought an out-of-state plate could keep everything off the radar, that margin for error just got a lot slimmer.
Still, the big question is whether the law will actually bite the way Sacramento wants. SB 1406 took effect at the end of September 2026, so enforcement is still the open issue hanging over it. Vehicles may stay registered elsewhere on paper, which means the state will have to figure out how to spot the ones that are really living in California.
There is also the behavior problem, because people with expensive cars do not always react the way lawmakers expect. Some may decide to pay up, some may look for another workaround, and some may simply move themselves or their vehicles out of state. Those choices are already familiar in California, where high taxes and strict rules have pushed plenty of wealthy residents to rethink where they keep their assets.
The Montana LLC issue was never only about taxes, either. For some owners, it was also a way to dodge California’s tough smog and emissions rules, especially for older cars and hobby vehicles that can be costly or difficult to keep street legal. That gave the loophole a second life beyond luxury cars and made it appealing to a wider crowd of enthusiasts.
Even with the crackdown, California collectors and classic-car fans still have another development to watch. The state’s signing of Leno’s Law opens the door for some older vehicles to qualify for smog-check exemptions starting in 2028, which could ease the pressure on certain classic cars. That does not erase the fight over tax avoidance, but it does show how California is trying to sort high-end loopholes from true hobbyist ownership.
For now, the state has drawn a line under one of its most popular registration games, and drivers who thought an LLC could do all the heavy lifting may want to take a closer look. The law is aimed at the kind of paper shuffle that let costly cars cruise around California while pretending to live somewhere else. Whether that ends the game or just changes the playbook is what everyone will be watching next.
