Additional tax.

Mich. Comp. Laws § 205.55, under GENERAL SALES TAX ACT.

Mich. Comp. Laws § 205.55

Sec. 5. Additional tax. The tax imposed by this act shall be in addition to all other license fees and taxes levied by law as a condition precedent to engaging or continuing in any business taxable hereunder, except as in this act otherwise specifically provided.