Presumptive taxation allows specified residents to compute business or professional income by prescribed deemed methods rather than detailed accounts. A special presumptive taxation scheme deems profits and gains of specified businesses or professions carried on by eligible residents to be taxable by applying the Table's computation rules: prescribed turnover linked percentages for general businesses, per vehicle or per ton deemed sums for goods carriage owners of limited fleet size, and fifty percent of gross receipts for certain professions, with the deemed amount taken as income unless actual profits exceed it. Eligibility conditions, prohibition of other deductions, books and audit requirements when actual profits are claimed lower and total income exceeds exemption, and operational definitions and limiting rules are prescribed.