128. A taxpayer may deduct, in computing his income from a business or property for a taxation year, only the outlays or expenses made or incurred by him during such year or payable in respect of such year, to the extent that they may reasonably be regarded as being related to such business or property and that they were made or incurred to gain income from such business or property and to the extent provided in this chapter, unless otherwise provided in this Part.
1972, c. 23, s. 117; 1997, c. 85, s. 330.