You can easily format your invoices. 

To manage your invoice formatting with digital banking 

1. Go to Transfer & pay. 
2. Select Send invoices. 
3. Go to Settings and then the Invoice settings tab. 
4. Choose Edit invoice format and/or +Add default note on invoice. 
5. In Edit invoice format, fill in the Invoice # prefix and Next Invoice sequence. 
   Note: You will see an option to view the new invoice format. 
6. Select Save. 
7. In Default note on invoice, add your note that will appear as default on customer invoices.  
8. Select Save. 

More information 

If you want to customize your invoices more, see also: How do I add a logo and brand color to my invoices?