The tax imposed by this chapter shall be levied, collected and paid with respect to all income and net profits subject to the tax earned on or after January 1, 1969, except that the tax imposed by the second paragraph of Section 171.03 shall be levied, collected and paid only with respect to all income and net profits subject to the tax earned on or after January 1, 1987.
(Ord. 18-86. Passed 11-4-86.)