Manage suppliers and expenses

Hi Fae89, 

I'm glad to assist you. 

When creating expense or any other transactions, the field box for Amounts are, gives you option whether you are using Inclusive or Exclusive of Tax. Then on the GST column, select the rate to apply for that transaction.  This article link will guide you on how to Enter and manage expenses in QuickBooks Online . 

Thanks for dropping by the Community. 

Nona