It will take a few clicks, Usereben. Let me guide you.

You can follow these steps on how to display VAT in the invoice:

1. Click the Gear icon.
2. Go to Custom form styles.
3. Select the template, then click Edit.
4. Go to the Content tab.
5. Click the Pencil icon in the second or middle section of the template.
6. Tick the VAT box.
7. Click Done. 

For more information, you can check this article: Customise invoices, quotes, and sales receipts in QuickBooks Online.

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