I can’t add tax rate on my app and keeps saying go on computer

Let me help you resolve the error you're having to add a new tax rate, @lgplumb18.

You should be able to add a new tax rate using your mobile app for QuickBooks Online (QBO). Since you're having an error when trying to add one, it's possible that a piled-up cache in your application caused this unusual behavior.

To resolve this, you can hit the Clear Data option in the Storage section of your mobile phone to reset the app to its default state.

Here's how to clear app cache or data storage if you're using an android:

1. Open your phone's Settings app.
2. Tap Apps & notifications and click on See all apps the app Storage.
3. Select Clear storage or Clear cache. If you don't see "Clear storage," tap Clear data.

For IOS:

1. Open Settings and swipe down and tap Safari.
2. Swipe down again and select Clear History and Website Data, click it once again to confirm.

You can check this article to solve the common error in the mobile application: Common Errors in the Mobile App. Also, here's the list of VAT codes in QuickBooks: Common VAT Codes.

Let me know if you need further help with adding new tax rates by leaving a reply below. Take care and have a great rest of the day!