Presumptive taxation exclusion: professions, commission/brokerage and agency businesses removed from the scheme; turnover threshold also increased. Amendment inserts a sub-section to exclude from section 44AD professions under section 44AA(1), income in the nature of commission or brokerage, and agency businesses; this exclusion is stated to operate retrospectively. The Explanation to section 44AD raises the turnover limit that defines an 'eligible business' for the presumptive taxation scheme, with the higher threshold to take effect from a later specified fiscal year.