To pay with a major credit card, you must have your 12 digit tax account number and your credit card number. The Bexar County Tax Office offers the option of paying your Property Taxes online with either a major credit card or an electronic check (ACH).We accept cash or money orders for community service payments. Complete all information regarding the document that is being submitted to the Office. Complete list of Texas Comptroller Property Tax Forms and Applications click here. Texas Comptroller Property Tax Publications click here. 1. Enter the lender's name and loan account number.