i need to add tax tab in sales invoice beacuse i didnt find in sales invoice

Hello there, @Shadan-Khan. Let's get that tax tab visible on your sales invoices so you can accurately process your sales.

To make VAT appear as an option on your invoices in QuickBooks Online, make sure you've turned on the VAT tracking feature in the tax settings.

Here's how:

1. Log in to your QBO account and go to All apps.
2. Select the Tax option, then Set up tax.  
3. Fill in your tax agency information, then hit Next.
4. Follow the prompts to complete the setup, then click Ok to proceed.

Once done, you'll see a Tax/GST column on your sales and purchases forms. If you're using QuickBooks in Ireland, Mexico, Malaysia, Singapore, the United Arab Emirates, and South Africa, the program will set up default tax rates. In some other countries, users can choose from a list of tax rates.

To help you learn more about the entire process of setting up tax in QBO sales and purchase forms, check out this article: Set up tax rates and use them on forms in the QBO International.

Click the Reply button if you need further assistance.