TCS is applicable to you only when your Turnover of last financial year is more than 10 crores.
If it's more than 10 Crores than in current year i.e w.e.f 1 st October, 2020 you are liable to collect TCS on value exceeding Rs. 50 lakh. (this limit we have to check on whole year basis)
In your case Required to collect tax on Rs. 12 Lakhs Only (Assume there is no Supply to this buyer in current year - earlier month's)
CAclubindia
