汇算清缴时发现12月份其中一笔费用做错科目，应该如何处理？

老师：为了解决这种情况，可以通过冲销金额相同的已经凭证记账的费用来处理，以便及时确认你的实际支出情况，并且不需要重新开具发票。例如，你发现某笔费用做了错误的科目， may offset that amount with an expense that was already recorded in the same month, eliminating any further accounting and taxation issues.