Section 255 Further rules about allowable deductions

An amount may not be deducted more than once under section 254.

A deduction under that section of a loss must be made from post-cessation receipts charged for an earlier tax year in preference to those charged for a later tax year.

But this does not authorise the deduction of a loss from post-cessation receipts charged for a tax year before the tax year in which the loss is made.

No deduction may be made under section 254 from any amount that is treated as a post-cessation receipt under—