How to add bank account details in the invoice templete so one doesn't need to enter the same every time an invoice is being raised

Thanks for posting to the Community, @dwirajesh.

You can add banking details to your invoices by adding custom fields, headers, or footers to the invoice. However, the change will only apply to newly created invoices after the invoice customization was applied.

Here’s how:

1. Log in to your QuickBooks Online account and click the Settings icon and then select Custom Form Styles.
2. Locate the Standard style and select Edit on the right-hand side of the column.
3. On the style page, you can select a new style or click the Next to stay with the one you have.
4. Select Footer and add a custom message with the banking details or add the banking details in as a footer, select Save.

To know more about personalizing invoices, you can refer to this video article which includes editing custom templates: Customize invoices, estimates, and sales receipts in QuickBooks Online.

Please don't hesitate to leave a message if you need further assistance. I'm always here to help. Take care!