Payroll Solutions We sell, install and support Customers who need Umbrella payroll, CIS payroll and Gross-to-Net payroll and use use QTAC Software as part of the overall solution. If you just want payroll software, please go direct to QTAC Software QTAC is based in Bristol. They are an award winning BASDA, ISO9001, ICPA, HMRC Accredited software house. For the price paid, the functionality is amazing. We like it because not only is it comprehensive and it can be used as a bureau, but it allows real back and forward processing per employee\contractor record. This is very important for many of our Customers who operate payrolls where work patterns are very fluid and rates and hours often change, even after processing! Business Solutions for Business People