Section – 156 : Notice of demand

156. When any tax, interest, penalty, fine or any other sum is payable in consequence of any order passed under this Act, the Assessing Officer shall serve upon the assessee a notice of demand in the prescribed form11 specifying the sum so payable :

Provided that where any sum is determined to be payable by the assessee or 12[the deductor or the collector under sub-section (1) of section 143 or sub-section (1) of section 200A or sub-section (1) of section 206CB], the intimation under those sub-sections shall be deemed to be a notice of demand for the purposes of this section.