Retail businesses will sometimes run customer loyalty programs that offer discounts on future gasoline purchases after qualifying purchases are made which customers may end up not using before the expiration date. The IRS says that you cannot deduct these discounts on your business income tax return until they are actually applied to purchases. Despite the IRS stance on this issue a taxpayer was able to win a case against it in the Third Circuit Court recently which reiterated the fact that this is a complicated issue.