Exporting invoices to Xero for different tax rates - I.E. Zero Rated EC services

Xero applies rate types to individual Chart of accounts (nominal) codes

so please check your account code settings or create a new one. This code can then be used within etz.  

Where do I enter the Sales Nominal code for Importing Invoices into Xero

Where do I enter the Purchase Nominal code for Importing Invoices into Xero