Actually tcs deduction on.?

NAGA (ACCOUNTANT) (504 Points)

06 July 2021  
Sir, 1. We have raised sale bills in April & may. tcs also 0.1% added in every bill.
2. and we have received payment also in the same month's, but received excess payment (March bill payment) compared sales.
sales are 5crs. receipts. 8cr.
now my query is is tcs applicable 5 cr or 8cr. ?
pls clarify.