The VAT in Ireland changed to 21% on Sep 1st. How can I input VAT expenses in QB?

Hello Declanmgibbons62, 

Welcome to the Community page, 

What you need to do is create a new tax rate of 21% in QuickBooks and then create a new expense with that new tax code selected. 

To add a new tax code in if you go to taxes> vat>edit vat> edit rate> add tax rate>fill the information in and save 

Once this is been added you'll be able to go to +new expenses and create the new expense and select that new tax code.