Sales Tax Center is not working for more than a month now. I can't even add sale tax to a new invoice. I cannot switch to Automated as the system errors out. Anyone else?

Hi there, chetrojicejr. I understand how Sales Tax is essential in your business. No worries, let me give you some insights about your concerns.

At times, due to the accumulation of temporary files, images, and other web page components, the browser's cache can become filled and cause issues when working with your QuickBooks Online (QBO) account. It can lead to problems such as encountering errors when using your QBO. I suggest running QBO in a private or incognito browsing mode to help your computer run optimally and regain some storage space to continue working seamlessly. See these keyboard shortcuts to open a private window:

• Google Chrome: Ctrl + Shift + N
• Mozilla Firefox: Ctrl + Shift + P
• Safari: Command + Option + P

For a detailed step-by-step process in clearing your cache, check out this article: Clear cache and cookies to fix issues when using QuickBooks Online.

Moreover, feel free to visit this link as your reference on how to manage Sales Tax payments in the tax center. The link includes step-by-step instructions in recording, adjusting, and deleting Sales Tax payments: Manage sales tax payments in QuickBooks Online. 

If you have any questions about your Sales Tax feature, please reply to this thread. Community space is available 24/7 to help you. Have a good one!

I have the same problem and this might help you.  Per another post, I escalated my support case to the Office of the President.
https://www.intuit.com/company/contact/office-of-the-president

See the two related threads below.  Multiple people are having the same issue.

https://quickbooks.intuit.com/learn-support/en-us/other-questions/sales-tax-center-sorry-an-error-oc...

https://quickbooks.intuit.com/learn-support/en-us/taxes/is-anyone-else-having-problems-with-the-sale...