I use Quickbooks Enterprise Solutions Desktop and process our payroll with the Quickbooks Enhanced for two separate companies.  On 9/30 when paying our semiweekly 941 taxes via EFTPS online, I made one payroll tax payment payment that was correct.  Then I made an additional payment of $8775.24 on the same day thinking I had opened up the other company's EFTPS but I didn't, essentially I overpaid the 3rd Qtr 941 taxes by $8,775.24.  I noticed this error before the Form 941 for 3rd Qtr was filed and I reported the overpayment on Line 15 and checked the box to apply to the next return.  On 9/30 I first entered the $8775.24 liability check by Create Custom Liability Payments.  Then I entered a second liability check, the same way, for the correct liability tax payment so that it would show the 3rd qtr overpayment of tax.  When we entered into 4th Qtr, on the first federal tax payment/payroll processing I short paid the federal tax liability EFTPS payment on 10/4 the $8,775.24, in hopes it would correctly report the overpayment on my 941 3rd Qtr return and the underpayment on the 941 4th Qtr return clearing them out.  On the 4th Qtr 941 form it was showing a balance due of $8775.24 because of the short/underpayment, so I overrode box 13 adding the amount of the 3rd qtr overpayment there so that it had zero balance due on the 941 4th qtr form.  I think that is how to handle the 941 3rd qtr overpayment reporting and the 4th qtr underpayment reporting....BUT my Schedule Liability Payment screen is showing the underpayment from 4th qtr overdue and will not go away.  I think my issue is because I made the two payment on 9/30 via the Create Custom Liability Payments and I think instead I should have only entered the correct liability payment this way and wrote a check for the overpayment but it seems no matter how I enter this my QB wont recognize the overpayment in qtr 3 and the underpayment in 4th qtr to wash out to zero. I need to correct the schedule payment lability balance it is showing $8775.24 overdue and I also need to confirm how I should report the underpayment on the 941 4th Qtr return, was I correct to override box 13?  Please help.