Section 1
SECTION 1. Section one hundred eighty of the National Internal Revenue Code, as amended by Republic Act Numbered Sixteen hundred twelve, is further amended to read as follows: "SEC. 180. Time for payment of fixed taxes.—All fixed taxes shall be payable, at the option of the taxpayer, annually, on or before the twentieth of January, or semi-annually, on or before the twentieth of January and July. But any person first beginning a business or occupation must pay the tax before engaging therein."