If you sold business-use property during the year, you had a gain or a loss on the sale. Complete and file Form 4797: Sale of Business Property.Many Buyers will require that a sale be structured as an Asset Purchase in order to avoid responsibility for prior liabilities or expenses of the business. You Can Easily File Your Return Online. Filing your return online is an easy and efficient method of filing your sales and use tax return. Additionally, you may be required to register with us again and report the sales tax. Where can I obtain assistance in completing the BPS? Real Estate: If you own the property where your business operates, decide whether to include it in the sale or lease it to the new owner. Capital gain taxes are calculated on a taxpayer's total income. When a lower middle market business in California gets sold, there are seven classes of assets.