175.6. Where the amount determined under subparagraph a of the first paragraph of section 175.5, in respect of a business of an individual or partnership for the taxation year or fiscal period, as the case may be, preceding a particular taxation year or fiscal period, as the case may be, exceeds the amount determined under subparagraph b of that first paragraph, in respect of the business of the individual or partnership for that preceding taxation year or fiscal period, as the case may be, the following rules apply:(a) for the purposes of section 175.4, the excess amount is deemed, for the purpose of computing the income of the individual or partnership from the business for the particular taxation year or fiscal period, as the case may be, to be an amount otherwise deductible for the particular taxation year or fiscal period, as the case may be, in respect of a work space that is described in paragraph a or b of section 175.4 for the particular taxation year or fiscal period, as the case may be;
(b) in applying section 175.5, the excess amount is deemed to be an expenditure, other than an expenditure of a capital nature, that may reasonably be considered to relate solely to the work space and that is deductible in computing the income of the individual or partnership from the business for the particular taxation year or the particular fiscal period, as the case may be.