June 16, 1956
Republic Acts - AN ACT TO AMEND SECTION THREE OF REPUBLIC ACT NUMBERED SIX HUNDRED, ENTITLED AN ACT TO PRESCRIBE A GRADUATED SCALE FOR THE INCOME TAX ON CORPORATIONS BY AMENDING SECTIONS TWENTY-FOUR AND FIFTY-FOUR OF COMMONWEALTH ACT NUMBERED FOUR HUNDRED AND SIXTY-SIX, OTHERWISE KNOWN AS THE NATIONAL INTERNAL REVENUE CODE, AS AMENDED, AND FOR OTHER PURPOSES, TO MAKE THE RATES PRESCRIBED THEREIN PERMANENT.
