T.S. Mishra, C. J.- The following question of law has been referred to this Court for adjudication: "Whether, in view of the facts and circumstances of the case, the Tribunal was justified on the material before it in holding that the assessment was completed on 16th March 1968 and as such the assessment was not barred by limitation ?" 2. The material facts are these: The assessee Ramanand Agarwalla was assessed under the provisions of the Income-Tax Act, 1961 as an individual. His income for the assessment year 1963-64 was the subject matter of assessment before the Income Tax Officer who passed his assessment order on 16th March 1968. That order was then followed by a notice dated 20th March, 1968 which was issued by the office of the Income-Tax Offices on 30th March, 1968 and was served on the assessee on 13th April, 1968. The assessee filed an appeal against that assess­ment order contending inter alia that it was barred by time under Section 153 of the said Act. The Appellate Assistant Commissioner of Income-tax repelled this contention holding that the assessment order was passed before 31st March 1968. The assessee then preferred an appeal before the Income-Tax Appe­llate Tribunal reiterating his contention that the assessment order was barred by time. The said contention however did not find favour with the Tribunal which held that the assessment was completed by the Income-Tax Officer on 16th March, 1968 and was entered into the Register in March 1968. The demand notice was also issued on 30th March 1968. The assessee then moved the Tribunal for referring certain questions of law to before this Court. In compliance with the directions issued under Section 256(2) of the Income-tax Act, 1961 by this Court, a statement of the case has been drawn up and sent to the Court. 3. The demand notice was also issued on 30th March 1968. The assessee then moved the Tribunal for referring certain questions of law to before this Court. In compliance with the directions issued under Section 256(2) of the Income-tax Act, 1961 by this Court, a statement of the case has been drawn up and sent to the Court. 3. The question referred to us for our answer relates to the interpretation of Section 153 of the Income-Tax Act, the mate­rial portion of which is in the following terms: "153(1) No order of assessment shall be made under Section 143 or Section 144 at any time after- (a) the expiry of- (i) four year from the end of the assessment year in which the income was first assessable, where such assessment year is an assessment year commencing on or before the 1st day of April, 1967; (ii) three years from the end of the assessment year in which the income was first assessable, where such assessment year is the assessment year commencing on the 1st day of April, 1968; (iii) two years from the end of the assessment year in which the income was first assessable, where such assessment year is an assessment year commencing on or after the 1st day of April, 1969" * * * It is quite plain that under Section 153 of the Act the order of Assessment cannot be passed after the expiry of four years from the end of the assessment year in which the income was first assessable, where such assessment year is an assessment year commencing on or before the 1st day of April, 1967. In other words, the Income-tax officer must complete the assessment within four years and if he fails to do so, he would not be entitled to pass any order with respect to that particular assess­ment year. The order of assessment is hence required to be passed before the expiry of the period of four years. The conten­tion of the assessee before the appellate Assistant Commi­ssioner as also the Income-tax Tribunal was that he received a demand notice dated 20th March, 1968 on 13th April, 1968 and as the said demand notice was accompanied by an undated assessment order, it could not be held that the assessment was completed on 16th March, 1968. The conten­tion of the assessee before the appellate Assistant Commi­ssioner as also the Income-tax Tribunal was that he received a demand notice dated 20th March, 1968 on 13th April, 1968 and as the said demand notice was accompanied by an undated assessment order, it could not be held that the assessment was completed on 16th March, 1968. True it is, that the demand notice was dated 20th March, 1968 and that it was served on the assessee on 13th April, 1968; but it is also a fact that the said demand notice was issued by the Office of the Income-Tax Officer on 30th March 1968 as would appear from the statement of the case. This is a question of fact which cannot be disputed before us. It was also found by the Income-Tax Tribunal as has been stated in the statement of the case that the assessment order in question was dated 16th March, 1968. This fact cannot also be questioned before us. So it has to be acce­pted that the Income-Tax Officer had passed the assessment order on 16th March, 1968 and that the said assessment order bears the date 16th March, 1968. The income of the assessee for the assessment year 1963-64 was the subject matter of assessment in the order dated 16th March, 1968. The said assessment year ended on 31st March, 1964. The assessment order should, there fore, in view of the provisions of clause (a) (i) of sub-section (1) of Section 153 have been passed before 31st March, 1968. The Income-Tax Officer passed that order fifteen days before that date; in fact that order was passed on 16th, March, 1968. 4. There is no substance in the contention that not only the assessment order but the demand notice should also be issued before the expiry of four years from the end of assess­ment year in which the income of the assessee was first assesseable. Sub-section (1) of Section 153 of the Act requires en Income-tax officer to pass an order of assessment within the period prescribed in the Act. It does not require that the demand notice should also be issued within that period. The words "order of assessment" cannot be construed as to include demand notice as well. Sub-section (1) of Section 153 of the Act requires en Income-tax officer to pass an order of assessment within the period prescribed in the Act. It does not require that the demand notice should also be issued within that period. The words "order of assessment" cannot be construed as to include demand notice as well. The demand notice does not form part of the order of assessment as is evident from the provisions of Section 156 of the Act which says that when any tax, interest, penalty, fine or any other sum is payable in consequence of any order passed under this Act, the Income-Tax Officer shall serve upon the assessee a notice of demand in the prescribed form specifying the sum so payable. 5. The demand notice is prepared after the assessment order is passed and a tax or interest or penalty etc. is found payable by the assessee in consequence of that order. The stage of issuing notice of demand is therefore a distinct stage. There is therefore no substance in the contention that the demand notice should also be issued within the period of four years from the end of the assessment year in question. 6. Our answer to the above noted question referred to us is in the positive and against the assessee. 7. We answer the question accordingly.