You can watch the video tutorial, which provides a step-by-step guide through the process.
You can add your company tax number to your invoices by following the simple steps below:
If you entered 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 “Templates” in the Simple Invoice dashboard.
Step 3: Activate the ‘Edit Text Mode’ option and add your company tax number to the ‘Company Information’ section. All text fields are inline editable.
Step 4: Please click the “Save” button to confirm your changes.