Cap on deductions under sections 80C, 80CCC and 80CCD limits combined tax deductions for specified investments. Deductions under section 80C, section 80CCC and sub section (1) of section 80CCD are to be aggregated and shall together be subject to a single prescribed ceiling, reflecting legislative substitution of earlier monetary limits and clarifying inclusion of sub section (1) of section 80CCD within that aggregate cap.