Whenever any person to whom a special fuel dealer's license or a special fuel user's license has been issued ceases using special fuel within this State, such person must notify the Tax Commission in writing of said fact within fifteen (15) days after such discontinuance and surrender his license together with all special fuel use vehicle permits issued and outstanding under said license. All tax, penalty and interest on special fuel levied by this Act and due from such person at the time of such discontinuance, shall become due and payable concurrently with such discontinuance, and such person must make a report and pay all the tax, interest and penalties due at the time his license is surrendered.