In most states, including Kansas, the cost of a bail bond is set at 10% of the court-set bail amount. In Kansas, the state of Kansas sets the bail bond rates, and the rates are non-negotiable. Also, there are no hidden fees or taxes when using a bail bond service. For example, if the court sets a defendant’s bail at $20,000, the bail bondsman fee will be 10% or $2,000 by law.