Cash sales and purchases limit under i.t. and gst act

Under GST Law, there is no limit regarding CASH PURCHASE and CASH SALES.

But under the Income Tax Act 1961, certain CASH Transaction limits are specified.

CASH PURCHASE :

As per the Provision of Section 40A(3) of the Income Tax Act 1961, Purchase exceeding Rs. 10,000 in Cash/Bearer Cheque per day, will not be allowed as Deduction under the head PGBP.
Therefore the limit is Rs. 10,000 per day incase of CASH PURCHASE.

CASH RECEIPT/SALES :

Provision of Section 269ST of the Income Tax Act 1961, Prohibits any person to receive an amount of "Rs.2 lakhs" and above in cash :

(i). In aggregate from a person in a DAY, or
(ii). In a single transaction, or
(iii). In respect of transactions relating to one event or occasion from a person.

If any Person violates the Provision of Section 269ST of the Income Tax Act 1961, then Penalty under Section 271DA would be applicable.

no as such limit in GST Act 

but in IT Act 1961 there is limit of Rs. 10,000 /- per day per person