No limit for cash tranasaction in gst but two rules are effected in income tax rule.if you do expense above 10.000 in a single day and single person then then your income will be increase and you will have to pay 100% penalty to income tax.
If someone comes from abroad (an NRI lets say) and pays more than Rs. 200000 in cash as he got the whole amount carrying with him converted into Indian currency. And does not have any Indian ID also. Then what will be the implications??