Tds to contractor(for construction)

mahesh Khandelwal (5 Points)

05 April 2018  
when TDs to be paid?
At the time of payment or when the bill is received from contractor.

If I made payment of Rs 10,00,000.00 to the contractor in 3 to 4 installments. and get bill of such on 31-03 when should i pay tds?