Hello there, @ljf.
Welcome to QuickBooks Community! I'm here to share some information about the reminders in QuickBooks Desktop.
The option to setup a reminder that you need to file quarterly Federal and State forms is currently unavailable in QuickBooks. For the Federal forms, the filing schedule is the same across all businesses. However, the filing schedule will vary for each State when it comes to State forms.
You can check out this article for more information (scroll down to parts 3 and 4): https://community.intuit.com/articles/1437559.
I'd also suggest contacting IRS and your State agency to know more about the filing schedule specific to your business.
Thanks for being a part of our QuickBooks family. If you have additional questions about QuickBooks and Payroll, please don't hesitate to leave a comment below. I'm always here to help.