The appellant was a private company providing specialist medical services. For the tax year ended 31 December 2010, it claimed deductions for a provision for audit fees (US$42,000) and a cash discrepancy (US$93,459) allegedly arising from theft. The respondent Commissioner issued an amended assessment disallowing both deductions and imposing a 100% penalty. The appellant objected, and the Commissioner reduced the penalty to 30% but maintained the disallowance of the cash discrepancy deduction. An investigation by independent accountants revealed serious deficiencies in cash management between July 2008 and August 2009. The appellant did not bank foreign currency receipts but kept them in a locked bag in a safe. Access to the cash was limited to the systems administrator, bookkeeper, and managing director. The investigation could not identify who perpetrated the alleged theft. No proper cash books were maintained, cash counts were irregular, and no formal handover procedures were followed. The parties proceeded by way of a stated case, agreeing that a theft occurred but that the thief was not a shareholder or person with a direct interest in the business.