Can an insurance company deny a finance company payoff on a vehicle that has been total by a driver that is not on the insurance policy?

Can an insurance company deny a finance company payoff on a vehicle that has been total by a driver that is not on the insurance policy?
Accident involving a driver not covered Yes! there are certain occasions when an insurer can deny coverage. Especially when the accident involved a driver who was not covered under the terms of the policy.

All regular and occasional drivers are required to be listed on your policy. All vehicle owners are required to be dosclosed. Concealment of vehicle owners or permitted drivers on an auto policy is the most common form of Auto Insurance fraud. If the company can determine it, They can deny any and all claims based on the fraudulently obtained policy.
 Answer
The answer to your question comes in two separate parts. First, it's important to understand that in general, anybody whom you have given permission to drive a car on your policy is covered by your insurance. This is regardless of their relationship to you and regardless of whether or not they live in your household.

With that said, you must also understand that nearly every auto insurance policy covers losses on an actual cash value basis. This means that there is a deduction for depreciation and/or use of the car...e.g. - The older a car is the less it is worth. (Unfortunately, even a brand-new car is never quite worth what somebody has paid a dealership for it. This often results in being "upside down" on your car note because you owe more than what it's worth.)

The bottom line is that when a person is upside down on their car note, if the car gets totalled in an accident, the insurance company only has to pay what the car is worth, not what you owe somebody for the car.