Hi there,
I know how important it is to be able to reflect business changes within QuickBooks Online. Luckily, changing your HST registration number is made really simple. In just a few clicks, you'll be back on track.
To change the HST registration number, follow these steps:
1. Click the Taxes tab on the left navigation menu.
2. Select Sales Tax.
3. Click Manage sales tax.
4. Click the small triangle drop-down menu next to Add rate for the agency you're adding your tax number for.
5. Select Edit agency settings.
6. Fill in your new GST/HST registration number.
7. Click Save.
That's all there is to it. I hope this helps get you back on track.
Have a nice day.