Complete them and pay the Tax due. The monthly return form is available at the Tax Collector's Office, Allegheny County Courthouse,.You must meet the minimum age restrictions, present a valid driver's license and possess an acceptable charge card in your name. Protect you and your customers with this free car rental agreement template. Create, send, and eSign documents in a flash. The following terms apply to the rental of this type of vehicle, in addition to those set forth in the Rental Agreement. Please read before booking your rental. ⏃ Payment, Signed Rental Agreement Letter, and Certificate of Insurance must be received at least 60 days before the rental date. Confused about all the car rental fees when you check out? Visit our page to learn more about all the fees that may apply to your Thrifty car rental.