Dial 1 (800) TAX-1040 (or 1 (800) 829-3676) to pose a question for an IRS spokesperson. Think of a question before you call. It deals with whether you qualify for a specific education tax credit, can deduct expenses for a sideline business, or can make Roth IRA contributions. Be patient. Write a summary of your findings and the quality of service you received by the IRS associate.