Tax Audit provisions are covered under section 44AB of the income tax act. As per the provisions if your turnover exceeds Rs 1 crore limit you will be liable for tax audit.
However, In Budget 2021, Finance Minister Nirmala Sitharaman proposed to offer major relief for companies that transact digitally. Thus, to incentivise non-cash digital transactions and to reduce the burden of compliance of small and medium enterprises, the government has now increased the threshold limit from ₹5 crore to ₹10 crore.
Thus if your total receipts and payments in cash does not exceed 5% then you can claim the higher limit of 5 crores for the financial year 20-21 and 10 crores for financial year 21-22.