It's showing in settings preview for the customer invoice VAT amount separately one column .But in the customer invoice it is not showing the vat column details.

Let me help with your question about invoices in QBO, pubaid813-gmail-.

If you have multiple invoice templates, make sure that you set it as default. This is to make sure that you're using the correct template when creating the invoice. Here's how:

1. Go to Gear icon and select Custom form styles.
2. Look for the template with the VAT column.
3. Click the drop-down list beside Edit, then select Make default.

If you only have one template. It's possible that this is caused by too much cache or browser issues. I'll share some steps to sort this out.

Use an incognito/private browsing session or switch to completely different browser. Use these keyboard shortcuts to open an incognito session, depending on the browser that you're using:

• Ctrl + Shift + N  for Google Chrome
• Ctrl + Shift + P for Firefox
• Control + Option +P if you're using Safari
• Ctrl + Shift + P for Microsoft Edge

 
Once done, go back to your account and check if there's a separate column for VAT in the customer's invoice. If everything looks fine, follow the steps in this article to delete your browsing history: Clear Cache And Cookies To Fix Issues When Using QuickBooks Online. 

Allow me to give you these articles for more references when customising your sales transactions:

• Add, Customise, or Remove Logos on Sales Forms 
• Customise Invoices on the QuickBooks Online Mobile App 

Please visit us again or ask more questions if you need anything else. We're always here to help with any QuickBooks-related concerns and inquiries.