As per section 44AB of the Income-tax Act, 1961, tax audit is applicable (for above-mentioned cases only) :
Particulars
Applicability of Audit
Carrying on any profession
If total gross receipts from the profession exceed Rs. 50 lakhs.
Carrying on Business
If total sales/turnover/gross receipt from the business exceeds Rs. 1 crore.
However, if cash transactions do not exceed 5% of the total receipts and payment applicability will be changed to exceeding Rs. 10 crores.
Carrying on the Profession which is eligible for presumptive taxation u/s 44AD/44ADA
If profits from the profession are lower than the profits computed under Section 44AD/44ADA or If the total income exceeds the maximum exemption limit.
Now, since :
your profit from business is < 8%
your professional income is is eligible for presumptive taxation u/s 44ADA (assumed) and profit is > 50%
you have not opted out of 44AD/44ADA in any of the last 5 previous years or never opted for 44AD/44ADA (assumed)
then provisions of Tax Audit would not be applicable.