(1) Chapter XVII-C -advance payment of tax.-overruled by Section 44AD
Provisions related to deduction at source are covered by chapter-XVII-B.-not overruled by Section 44AD
Provision related to collection and recovery of tax are covered by Chapter-XVII-D-not overruled by Section 44AD
(2) Further section 44AD is not available to following assesee-
1. otherthen individual, huf , firm-
2. business covered u/s 44AE
3. those required to go for tax audit
And Individual, huf , are required to deduct tax only if they are required to go for tax audit. But this concession is not availble to firm.
(3).Section 44AA is required to ask to maintain prescribed books of account. But it dose not mean that assessee is not required to keep books of account at all . If we observe that even where books of accounts are not required to be maintained as per seciton 44AA , assessing officer may call assessee to produce list of debtors and creditors,statement of payments and receipts made with source documet-refer section 142(1)(ii). There are provisions covered by section 200A and 201(3) for determination of TDS liability. And section 220 and 221 read with section 201(1) and (1A) for recovery of the same. These sections are covered under different chapter not overruled by Section 44AD.
thus is short there has been proper mechanism to catch the assessee on failue to deduct tax,even in case of presumptive taxation scheme.