A Montana plate might look harmless in Los Angeles traffic. California officials say it can also be a red flag. The state is now reviewing every sale by a California dealership since 2023 that ended with Montana registration, part of a broader push to stop a tax dodge known as the “Montana loophole”.
The target is not just drivers in flashy cars. It is the paperwork, dealers, and LLC filings behind them.
How the Montana LLC strategy works
The loophole works because Montana has no statewide sales tax. Buyers can form a Montana limited liability company, register the vehicle there on paper, and claim it was delivered out of state even when it is mainly used in California.
State officials say the practice has involved close to 500 California dealers and more than 2,500 sales since 2023, many tied to luxury or exotic vehicles, and costs California more than $10 million a year in lost tax revenue.
California is following the paperwork, not the traffic stop
That is why the crackdown is moving through tax files rather than traffic stops. The California Department of Tax and Fee Administration says it has opened more than 400 investigations into high-end vehicle buyers and started nearly 300 audits of dealers tied to sales into no-tax states.
The DMV says it has pursued 81 criminal investigations since June 2023, identified 601 fraudulently registered vehicles, and recovered $2.3 million in registration and taxes. In practical terms, the state is treating this as a coordinated evasion scheme, not a paperwork mistake.
Where the pressure is showing up
The geography is telling too. Beverly Hills led the state with 416 sales linked to Montana purchasers, followed by Costa Mesa with 359 and Van Nuys with 273. San Diego and Murrieta also ranked high.
Anyone who has sat in Southern California traffic knows how common expensive cars can be. But officials appear to believe some of those luxury sales came with a second product tucked into the deal, a way to shrink the tax bill.
What buyers and dealers need to remember
California says residents still owe sales tax unless a vehicle is first used and kept out of state for at least 12 months, and dealers must keep detailed records proving out-of-state delivery. Buyers who falsely claim the car is being used elsewhere can face penalties worth 50 percent of the tax due.
“We encourage all Californians to do the right thing and register their vehicle here if they are operating it in California,” DMV Director Steve Gordon said.
The official statement was published on the California Department of Tax and Fee Administration.
