Bank details, and any other additional information, such as payment terms, can be added to all of your invoices. This information will appear under the invoice line items.
To add this, go to Settings – > PDF Themes – > choose the relevant theme – > Misc Options – > Additional Text.
The Additional Text field will have separate tabs for information to be added to Invoices, Quotes, Purchase Orders and Packing Slips
It will look something like this