How do I activate VAT in Spain Quickbooks

Setting up VAT in QBO is made easier for you, @colnaghi-com,

You can start by going to the Taxes menu from the navigation panel. The rest of the steps are as follows:

1. Click on Set up tax.
   
2. Fill out all the information of your VAT item.
   
3. Tap Next then press OK.
   

Now you're ready to track your VAT transactions. Here are some links about using VAT and other features in QBO:

1. Tax Guide
2. Help Articles for QuickBooks Online.

Feel free to raise any QuickBooks question at any time. I'm always here if you need further help. Have a nice day!