Let's perform some troubleshooting steps like accessing your account in a private browser, @shiptavern.
There are times that your default browser is filled with data and temporary files from previously visited websites. Sometimes those files can cause mishaps in browser-related things like slowness or issues within the program. When QuickBooks Online has unexpected behavior, it is recommended to use a private browser. Doing so helps isolate the issue. You can use the keyboard shortcuts below:
To do so, you can use the keyboard shortcuts below:
Internet Explorer: Ctrl+Shift+P
Once a private browser is open, try to access taxes tab again. Check to see if it works.
Additionally, I want you to get the most out of QuickBooks for your business. You can check some articles that are designed to help you get acclimated with the software. They can be accessed at the following link: QuickBooks Tutorials.
I'll appreciate if you can get back to me and share how it works. I want to ensure that this gets resolved. Have a great day.