Sec 44AD

There can be no excuse for not maintaining bill books. However, if you are a small time retail trader with your annual turnover less than 1 Crore, then you are permitted to declare your income on presumption at 8 % of your actual sales (u/s 44AD). In this case, no books of account need be maintained.

Sec 44AE

Transporters owning less than ten goods carriage can also avail the benefit of presumptive income scheme without maintenance of books of account. However, if you declare your income below the minimum level / percentage provided under the scheme, you will necessarily have to maintain the books and get them audited.