You can use any paper size, louisahadden.
You can select the size of the paper you'd like in printing invoices or any sales transactions. When printing invoices, on the Print page, choose your preferred paper size from the Paper size drop-down.
For more information, check how to print sales forms.
I'd be glad to help you if you have other concerns. Have a great day!
Thank you for your reply.
I just tried 1 invoice and when I printed it it has not included the whole invoice, it has cut off everything after the tax box.
Any other suggestions on how to get my invoices on 8.5 x 5.5?
In addition to Alex's answer, you can try printing in Google Chrome. Through it, you can adjust the display scale manually or you can select Fit to page.
If there's anything that I can help you further, please let me know.
JessT, thank you so much.
I should have known that but this change to online rather than desktop QB has me showing my blondeness.