Dear Sir,
1.If your turnover is below 1 crore and you are showing profit more than 8% of turnover, then you need not get your accounts audited.
2. No, a firm can't take this plea. It can be taken by an individual or HUF.
3. An Individuals or an H.U.F. is not liable to deduct TDS where the individual or H.U.F. is carrying on a business/profession where accounts are not required to be audited u/s 44AB, in the immediately preceding financial year.
Please feel free to call/revert in case of any doubts
Thanks and Regards
Abhishek Dugar
CA CS B.Com