Hi,

In Odoo, the field partner_bank_id on customer invoices points to a bank account record. Each of these records contains the account number and is linked to a bank entry where details such as the bank name and BIC (SWIFT code) are stored. By default, the invoice report only prints the account number and bank name, but the BIC is already available in the system through partner_bank_id.bank_id.bic.

To include the BIC on customer invoices, you can extend the invoice report template (account.report_invoice_document). In the section where the bank account details are printed, you can add a small condition to display the BIC if it exists. This allows the invoice to show the payment reference, IBAN, bank name, and BIC together.

Sample Logic:

<t t-if="o.partner_bank_id">

    <p>

        Payment Communication: <span t-esc="o.payment_reference"/> <br/>

        On this account: <span t-esc="o.partner_bank_id.acc_number"/> -

        <span t-esc="o.partner_bank_id.bank_id.name"/>

        <t t-if="o.partner_bank_id.bank_id.bic">

            (BIC: <span t-esc="o.partner_bank_id.bank_id.bic"/>)

        </t>

    </p>

</t>

This method is better than hardcoding bank details in the footer because it supports scenarios where your company uses multiple bank accounts in different countries or currencies. By selecting the appropriate bank account on the invoice, Odoo will automatically display the correct IBAN, bank name, and BIC.

Hope it helps