City of Baltimore
Baltimore City Code

§ 27-9. Closing or sale of business.

If a person required to pay a tax under this subtitle sells his, her, or its business or otherwise ceases to do business:

(1) any tax payable under this subtitle becomes immediately due and payable; and

(2) within 3 days of the sale or other cessation of business, that person must submit the required report and remit the total amount of the tax due.