No. 21. Income Tax. 1967. whose home is in the Colony, the whole of the gains or profits from any such trade, profession or vocation shall be deemed to have accrued in or to have been derived from the Colony: Provided also that tax shall not be payable in respect of any income arising outside of the Colony and accruing to any person who is in the Colony for some temporary purpose only and not with any intent to establish his residence therein and who has not actually resided in the Colony at one or more times for a period equal in the whole to six months in the basic year. Basis of 4. (1) Tax shall be charged, levied, collected and paid assessment, annually for each year of assessment upon the total chargeable income of any person for the basic year. (2) The basic year shall be the period of twelve months ending on the 31st December immediately preceding the year of assessment: Provided that where the Comptroller is satisfied that any person usually makes up the accounts of his trade, to some date other than the 31st day of December, he may permit the profits of that trade to be computed for the purposes of this Ordinance upon the income of the year terminating on such date and that year shall accordingly be deemed to be the basic year: Provided also that where such permission has been given in respect of any year of assessment the profits for each subsequent year of assessment shall be computed by reference to a basic year terminating on a like date: Provided also that where a change occurs in the date to which accounts are made up the Comptroller may make such adjustment for any year or years as in his opinion is just and reasonable. (3) Subject to the provisions of this Ordinance, tax shall be chargeable and charged for any year of assessment for which income arose in the basic year from the sources described in section 3 notwithstanding that no such income arose in the year of assessment. PART III. EXEMPTIONS. Exemptions. 5. There shall be exempt from the tax- (a) the official emoluments received by the Administra- tor of Saint Vincent;