If you have defined more bank account at your company details, you can choose which one to appear on the invoice (or on your proforma, notice or receipt).
When generating a new document, you will notice that all bank accounts appear in a box in the lower right-corner menu. If you do not want any of these accounts to appear on that document, you can deselect it.
After adding a bank account, from the same section where you added it, you can select to have it ‘displayed by default’ in invoices.
The accounts checked with ‘displayed by default’ will appear by default in the invoices header (and others documents) – with no need to be selected when you issue a document.