Presumptive taxation threshold expands audit exemption for eligible taxpayers who opt into the presumptive scheme. A person carrying on business must obtain an audit when total sales, turnover or gross receipts exceed the general audit ceiling, but an eligible assessee who opts for the presumptive taxation scheme benefits from a higher non audit ceiling and is not required to have accounts audited while receipts remain within that elevated threshold; the higher ceiling applies only to those who elect the presumptive regime and does not affect taxpayers who do not opt in.