Hi @ Ceee
Every person carrying on legal, medical, engineering or architectural profession or the profession of accountancy or technical consultancy or interior decoration or authorised representative or film artist shall keep and maintain the books of account and other documents-----if his total gross receipts in the profession do not exceed one lakh fifty thousand rupees in any one of the three years immediately preceding the previous year, or, where the profession has been newly set up in the previous year, his total gross receipts in the profession for that year are not likely to exceed the said amount.
For the persons carrying on business and Profession other than above,then the limit is 10 lakhs gross receipts (or) 1.2 Lakhs income as specified in earlier replies
Hope this clarify ur doubt