The basis for the payment of cash by contractee under contract is ________.

The basis for the payment of cash by contractee under contract is work certified. During the period of contract, Contractee has to pay sums of amount to contractor especially where a contractor is engaged in a big and long term contract. This amount is paid on the basis of certification of work done by surveyors or architects on behalf of the Contractee, who certified the value of the work done by the contractor.