File Form 1099S, Proceeds From Real Estate Transactions, to report the sale or exchange of real estate. Find a list of tax forms and applications to properly register your business within Montgomery.The tax sale is the process where the tax lien certificates are sold at public auction to the highest bidder. Each County issues bidding rules for its sale. This is a Legally Binding Contract; If Not Understood, Seek Competent Legal Advice. Your county may have a website to download real and personal property tax forms. Property tax forms should be returned to your county tax officials. You should consult your lawyer and tax attorney for all aspects of your real estate transaction. Learn what a cash offer is and whether to consider it when buying or selling your home. Economic Development Projects.