I’ll help and route you in the right direction on how to add the QR code to your invoices, @userarun.
Currently, this option isn't possible in QuickBooks Online (QBO). Alternatively, you can explore our QuickBooks Apps page to find a third-party app that allows you to incorporate a QR code into your invoice. You can check the customers’ reviews to get a better comparison of each app. Then choose the one that best suits your business needs.
Moreover, you'll want to check this article if you want to personalise the template of your sales forms: Customise invoices, estimates, and sales receipts in QuickBooks Online.
Count me in if you have additional questions managing invoices in QuickBooks. Simply leave your comment below and I'll get back right away.
