What is underinsured motorists coverage in Washington?

It’s also known as UIM. UIM or Uninsured or Under-Insured, it all really means the same thing. It’s insurance that you buy from your own agent, it’s on your policy, you pay the premium for it. It steps in if the person who hit you doesn’t have any insurance, or doesn’t have enough insurance. It’s really important, it’s very inexpensive and it won’t make your premiums increase.