When buying the assets of a business, some are subject to sales or use tax, while others are not. Items subject to retail sales tax.The process is comprised of four general steps: conversation, letter of intent, definitive documentation and closing. We're offering you these two free real estate contract PDFs. The easiest way to create a Business Purchase Agreement is to use a template that is customized to your state. For example, if the purchase and sale agreement is to sell property, Washington law typically requires it to be in writing to be enforceable.