Circular : No. 566-Income Tax Sub-section (5) of section 11 of the Income-tax Act, 1961 specifies the forms and modes of investment or deposit or surplus money by public charitable or religious trusts and institutions as referred to in section 11(2)( b) of the Act. Clause (i) of the said sub-section (5) specifies one of the forms of investment as investment in savings certificates as defined in clause