Each person required by this chapter to remit a tax shall file a return with the tax administrator on forms approved by the tax administrator on or before the due date. The full amount of the tax owed shall be included with the return and filed with the tax administrator. The tax administrator is authorized to require such additional information as they deem necessary to determine if the tax is being levied, collected and remitted in accordance with this chapter. Returns are due immediately upon cessation of business for any reason. Pursuant to Revenue and Tax Code §7284.6, the tax administrator, and its agents, shall maintain such filing returns as confidential information, and not subject to the Public Records Act.