The Pennsylvania Bill of Costs is a document used in Pennsylvania civil court proceedings that lists the costs incurred by the prevailing party in the action. This document must include all costs that are allowed by the Pennsylvania Rules of Civil Procedure, including: court costs, attorney fees, witness fees, costs of service of process, expert witness costs, costs of deposition transcripts, and any other costs incurred in the course of the action. There are two types of Pennsylvania Bills of Costs: a Final Bill of Costs and an Interlocutory Bill of Costs. The Final Bill of Costs is filed with the court clerk after the court has ruled on the action and the prevailing party has been determined. The Interlocutory Bill of Costs is filed with the court clerk prior to the final ruling on the action and is used by the court to determine the costs that will be awarded to the prevailing party.