Can I create multiple invoice templates with different bank details?

Yes, you can use different bank details on multiple invoice templates, nb9.

I can show you how we can do that in the system. The same bank information will show if we enter bank details on the template's Email, Message to customer, and Your payment details section. We can use the Add footer text field so the bank information won't change and you can use different bank details on multiple invoice templates. I'll show you how: 

1. Log in to QuickBooks Online. 
2. Go to the Gear icon and select Custom Form Styles. 
3. Click on the first invoice template to edit.
4. Select the Content tab and click on the Footer section of the sample. 
5. Enter the bank information for this template and then click Save. 

Do the same thing for the next 5 invoice templates. In addition, let's make sure that we select the correct template before we send out invoices. Here's how to select a template on the Invoice page. 

1. Open an existing invoice.
2. At the bottom, click Customise.
3. Select the correct template for the invoice.

For more details on customising your sales forms, check out this article: Customise invoices, estimates, and sales receipts in QuickBooks Online. 

Let me know if there's anything else that you need help with. Take care!