An asset purchase agreement is the legal document that will govern the transfer of ownership of a business's assets from the seller to the buyer. Before you buy an existing business, find out if the business owes any Texas taxes.A taxable asset purchase allows the buyer to "step up," or increase, the tax basis of the acquired assets to reflect the purchase price. An Asset Purchase Agreement is a legally binding contract between a buyer and a seller that details the terms and conditions of the sale of a business's assets. Asset purchase agreements can be a useful way to create a new business while leaving unwanted resources and potential issues with the seller. An asset sale is a type of business transaction in which a buyer purchases all, or part of, a selling business' assets. With an asset purchase, the buyer can step up the tax basis on the target corporation's appreciated assets to reflect the purchase price. In an asset sale, Company A transfers certain property to Company B in exchange for consideration (i.e. cash).