Hi again Milo123,
It's awesome that your Corporate Tax refund is covering the amount owed for your Sales Tax return. QuickBooks Desktop's sales tax adjustment feature may be just what you're looking for. The following article goes over the steps you need to take and the instances in which you'd use this process.
The steps should get you on your way, but if you have questions or would like a hand with completing them, don't be afraid to give us a call. Our agents are happy to walk you through these processes and can even use a screen share session to see for certain that you're on the right track. Get in touch at 1-877-772-9158. If you're using Pro or Premier, agents are available when you are since the lines are open 24/7. Enterprise support is reachable from Monday to Friday between 9 a.m. and 8 p.m. EST. Learn more about support policies: Intuit QuickBooks Desktop Support Policies
Have a great day!