15CA/15CB CERTIFICATE
Form 15CA is a declaration of the remitter and is used as a tool for collecting information in respect of payments which are chargeable to tax in the hands of recipient non-resident. ... This copy is required to be given to the Bank as proof of tax clearance from the tax department.
15CB is the Tax Determination Certificate where the CA examines the remittance with regard to changeability provisions under Section 5 and 9 of the Income Tax Act along with the provisions of Double Tax Avoidance Agreements