You have been acting as a tax agent for a married couple for many years. They are jointly involved in a business. They have recently been divorced and you are preparing their individual tax returns. They have continued to run the business.
In the past you have legitimately claimed certain deductions from the husband’s income. Now that they are divorced it is clear that claiming deductions for the ex-husband means that the ex-wife is unable to make similar claims to reduce her taxation liabilities.