All entertainers, except entertainers who work for an entertainment corporation, and entertainment corporations not otherwise employed or regularly engaged in business in this state shall file a surety bond with the department of revenue at least 7 days before a performance. That bond shall be payable to the department to guarantee payment of income, franchise, sales and use taxes, income taxes withheld under subch. X, penalties and interest. The amount of the bond shall be 6 percent of either the total contract price on all contracts that exceed $7,000 or, if the total contract price is not readily determinable and the department’s estimate of the total remuneration to be received by the entertainer or entertainment corporation exceeds $7,000, 6 percent of the department’s estimate. Amounts previously earned in this state by an entertainer or entertainment corporation during the same calendar year for which no bond or cash deposit has been filed under this paragraph or for which no amounts have been withheld under s. 71.64 (5) shall be added together to determine the total contract price. The department shall approve the form and content of the bond. The bond shall remain in force until the liability under the bond is released by the department.