I'm here to help you add VAT numbers to invoices in QuickBooks Online.
Adding a VAT number to your invoices in QuickBooks Online is a simple task.
First, input your VAT registration number after configuring your VAT settings. Subsequently, this number will automatically appear on your invoices. To configure your VAT, kindly adhere to the following steps:
From the left navigation bar, choose Taxes.
Click the Edit VAT drop-down, then click Edit Settings.
Make necessary changes, then enter the VAT registration number.
Click Save.
Once your VAT registration number is added to your account, it will be displayed automatically on your sales transactions. You can view it by selecting the Print or Preview option at the bottom of the Invoice page, where you will find the VAT Registration No. in the business information section.
For future reference, you can read these articles to help you manage VAT in QuickBooks Online: