An asset sale occurs when a business sells all or a portion of its assets. Asset Sale lets buyers choose specific assets and liabilities; Stock Sale doesn't.Asset sales generally make sellers attempt to maximize the price, particularly to cover higher taxes. Learn the tax implications for each type of sale. While an asset sale outshines a stock sale in company structure support, it loses a fair amount of points when it comes to tax implications. Stock sales are more common for larger business transactions. An asset sale transaction involves the sale of some or all of the assets used in a business from a selling company to a buyer.