Sounds like they nailed everybody, no matter where you may actually live if you are based in SDF, fear not, the state is a far better judge of the best use of your earnings:

Explanation of Occupational Taxes: The Louisville Metro Revenue Commission (hereinafter referred to as the “Revenue
Commission”) collects Occupational License Fees/Taxes (hereinafter referred to as “Occupational Taxes”) on all income
resulting from transacting business within Louisville Metro, Kentucky. There is no minimum earned income amount
before you are liable for filing a tax return. The occupational tax is imposed upon the privilege of engaging in a business,
profession, occupation, or trade within Louisville Metro, Kentucky, regardless of the legal residence of the person so
engaged. Louisville Metro includes the area within the boundaries of Jefferson County, Kentucky. The current rate for
Occupational Taxes totals 2.2% (.0220). This total is distributed as follows: 1.25% (.0125) to Louisville Metro Government;
.2% (.0020) to Transit Authority of River City (TARC); and .75% (.0075) to the Louisville or Anchorage Public School Boards.
The occupational license tax rate is applicable to the “net profits” of business entities, independent contractors and selfemployed
individuals, and to the gross employee compensation of employed individuals. Individuals who reside outside
Louisville Metro, Kentucky, are exempt from the School Board tax.