View the forms library. A Pennsylvania residential purchase agreement establishes a legal arrangement between a buyer and a seller in a real estate transaction.The Contractor agrees to indemnify, protect, defend and hold harmless the. This is going to be how to fill out the agreement of sale for pennsylvania. The Real Estate Division of the Department of Finance accepts questions from the general public for purchase of properties. The Pennsylvania sales tax rate is 6 percent. Pay Keefe for its portion of the commissary sales that week. Watch this video for assistance with filing and paying sales tax returns and payments in the Department of Revenue's myPATH system.