1Pursuant to Section 4648.35(2), F.S., 6the rates as filed and approved by the Office of Insurance Regulation are the only rates which may be used and the same rate must apply to every bond written. All bail bond rate filings shall be submitted on Form DI4-503, Rev. 10/90 “Bail Bond Rate Filing” which is adopted and incorporated herein by reference. This form may be obtained from the Office of Insurance Regulation, Bureau of P & C Forms and Rates, Larson Building, Tallahassee, Florida 32399-0300. Before the rate filing may be changed, a new filing must be made and approved by the Office of Insurance Regulation. The professional bail bond agent must be able to prove that their previous rate was either too high or too low as the case may be. Bail bond agents must charge the rate approved by the Office of Insurance and may not advertise reduced rates.