Refund Tax Blank Title 81003

Vantage 8.03.408 Progress

I was wondering how others handle refunding tax. In other words, a customer was charged tax when they should not have been. It seems to me that the way we are doing this now is not the best way. We do a credit memo and enter a MISC item and put the tax refund in the tax field, but because the credit memo doesn't allow zero amounts, we have to put in a penny on the MISC line item and then adjust it out.