A. In addition to any other taxes upon the subjects of taxation listed herein, there is hereby levied, subject to the provisions of § 58.1-2664, a special regulatory revenue tax equal to twenty-six hundredths of one percent of the gross receipts such person receives from business done within the Commonwealth upon:
1. Corporations furnishing water, heat, light or power, by means of gas or steam, except for electric suppliers, gas utilities, and gas suppliers as defined in § 58.1-400.2 and pipeline distribution companies as defined in § 58.1-2600;
2. Telegraph companies owning and operating a telegraph line apparatus necessary to communicate by telecommunications in the Commonwealth;
3. Telephone companies whose gross receipts from business done within the Commonwealth exceed $50,000 or a company, the majority of stock or other property of which is owned or controlled by another telephone company, whose gross receipts exceed the amount set forth herein;
5. Railroads, except those exempt by virtue of federal law from the payment of state taxes, subject to the provisions of § 58.1-2661;
6. Common carriers of passengers by motor vehicle, except urban and suburban bus lines, a majority of whose passengers use the buses for traveling a daily distance of not more than 40 miles measured one way between their place of work, school or recreation and their place of abode; and
7. Any county, city or town that obtains a certificate pursuant to § 56-265.4:4.
B. Notwithstanding the rate specified in subsection A, the maximum rate of the special regulatory revenue tax shall be increased above such specified rate to the extent necessary to permit the Commission to recover the additional costs incurred by the Commission in implementing subdivision B 4 of § 56-265.4:4 that cannot be recovered through the specified rate.