I can't save the journal as the system is giving me this error message "cannot assign tax code on tax account"

Saving a journal entry successfully ensures accurate financial record-keeping, Arleen. I've got some details about the error message you've received.

The message typically appears when you try to record GST adjustments. To prevent the error, avoid selecting a tax code when posting to the GST account, as this can duplicate the entry and cause errors.

However, if there's no tax selected, and the error persists. I recommend reaching out to our Customer Care Team. They can unfile the form so you can make the necessary changes.

Here's how you can reach them:

1. Click on Help at the top menu bar.
2. Select on the Contact Us button.
3. Enter a brief description of the issue in the What can we help you with? box.
4. Press on Let's talk or Get a callback.

To learn more about the unfiling process, kindly refer to this article: How to unfile VAT/GST.

Furthermore, you might want to scan this resource for guidance on reviewing transactions included in each box on the tax return base in your tax settings: Tax Detail Report.

Feel free to add a comment on this post if you have additional questions regarding withholding taxes or other related concerns in QuickBooks Online. We're always around to help.