You can add your company tax number to your invoices by following the simple steps below.
If you added your company tax number during the Simple Invoice setup, it will appear as the last line in the company information field.
Step 1: Open Simple Invoice from your Shopify store’s “Apps” section.
Step 2: Click on the “Templates” on the Simple Invoice dashboard.
Step 3: Click on the Company Information section and add your company tax number. All text fields are inline editable.
Step 4: Click on the Save button.