How to setup sst

I'm happy to see you again here in the Community, @patihah.

Setting up the SST in QuickBooks Online is a breeze. I'd be happy to guide you how to accomplish this.

Once you already have the SST Registration Number, you can enter them from your settings so it will reflect on your invoice.

To do that:

1. Click on the Gear icon.
2. Select on Account and Settings.
3. On the left panel, select Company.
4. From the Company name section, enter your SST Registration Number in the Sales and Service Tax ID field. 
5. Click Save and then Done.

To give you more insights about the SST in QBO, please check out this reference: Why do I see a SST charge for my QuickBooks Online plan?

I'm also adding these links to give you more details about managing sales tax in QuickBooks Online: 

• Check how much sales tax you owe in QuickBooks Online
• Learn how to file your sales tax return and record your tax payment in QuickBooks Online

I'll be right here to provide continued support if you need more help with taxes. Just leave a reply below. Stay safe!