Actually, to answer the original question, you need to look at the IRS regulations (definition of miscellaneous income) rather than Reg Q. I'm not sure what the answer is because I've never researched it, but the amount may need to be reported on a 1099-MISC if the total refunded to one customer exceeds $600. Again, I'm not sure whether you would be required to report, but I am sure that the IRS regs are where you need to look for your answer. Maybe Randy will see this and give you a definitive answer.
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