(1)Where the Assessing Officer, on an application made by a person under sub-rule (1) of rule 28 is satisfied that existing and estimated tax liability of a person justifies the deduction of tax at lower rate or no deduction of tax, as the case may be, the Assessing Officer shall issue a certificate in accordance with the provisions of sub-section (1) of section 197 for deduction of tax at such lower rate or no deduction of tax.