Tax Audit For FY 2020-21

Client has gross turnover of 3.25 Crores in F.Y.2020-21

The client fulfills the criteria of not more than 5% of cash receipts and 5% of cash payments during the financial year 2020-21.

The client wants to declare the profit less than 8%. Can he declare the profit less than 8%.

If no, then whether tax audit would be required to done and under which section.

Please guide