You may file your Business, Professional and Occupational License (BPOL) via online, email, mail, or in person at our business tax department. You can pay your business tangible property taxes on your furniture, equipment, computers, machinery, tools, and business vehicles on the online payment portal.The gain or loss on each asset is figured separately. The sale of capital assets results in capital gain or loss. Several areas have an additional regional or local tax as outlined below. Gains on Assets Sales. Report the net proceeds from the sale of any asset where the sale price was greater than the inventory (carrying) value. Browse 125 businesses for sale in Fairfax County, VA on BizBuySell. SmolenPlevy is ready to support you with your business and commercial needs. We have experience assisting our clients in Virginia, Maryland and D.C..