If the tax owed by a surplus lines licensee under this section has been collected and is not paid within the time prescribed, the same shall be recoverable in a suit brought by the commissioner against the surplus lines licensee. The commissioner may charge interest for any unpaid tax, fee, financial assessment or penalty, or portion thereof: Provided, That interest may not be charged on interest. Interest shall be calculated using the annual rates which are established by the Tax Commissioner pursuant to section seventeen-a of article ten, chapter eleven of this code and shall accrue daily.
W. Va. Code § 33-12C-7