Tennessee PROBATE — Contestant Surety Bond for Will Contest is a type of surety bond that is required in the state of Tennessee when an individual is contesting a will in probate court. The bond guarantees that the contestant will pay court costs, executor fees, and/or other costs if the will is found valid. There are three types of Tennessee PROBATE — Contestant Surety Bonds for Will Contest: Contestant Surety Bond, Contestant Bond with Surety, and Contestant Bond with Joint Surety. All three bonds must be executed by an approved surety company.