It's really surprising that there is no easier way to solve this. I had the same issue and found this thread, but the examples were not fully working for me. They did select a bank account, but not necessarily one which is linked to the own company.

This seems to work (tested in Odoo 17, but should work in Odoo 16 too):

for record in records:
  if record.move_type == 'out_invoice':
     currency = record.currency_id
    bank_account = record.env['res.partner.bank'].search(['&', ('currency_id', '=', currency.id), ('partner_id', '=', record.env.company.partner_id.id)], limit=1)
    if bank_account:
        record.write({'partner_bank_id': bank_account.id})

I have set the trigger on "currency" too, but it is not necessary. Hope it helps!

I think you can reference this post. It can help.

I would need exactly that, but the provided code does not work in Odoo 16. @Ricardo: Were you able to solve this?

Hi,

Yes, for this you can create an automatic action that triggers when a new invoice is created or updated. The automatic action should set the recipient bank account based on the currency selected in the invoice.

for move in records:
    if move.type == 'out_invoice':
        currency = move.currency_id
        bank_account = self.env['res.partner.bank'].search([('currency_id', '=', currency.id)], limit=1)
        if bank_account:
            move.write({'partner_bank_id': bank_account.id})

Once the automatic action is created, it will be triggered when a new invoice is created or updated. It will set the recipient bank account based on the currency selected in the invoice.

Note that this solution assumes that you have created separate bank accounts for each currency. If you have not done so already, you will need to create a separate bank account for each currency in your chart of accounts.

Regards