Hello Julie, thanks for reaching out to the Community today.
You can upload up to 10 logos in QuickBooks Online, but each invoice form only supports one logo. To share feedback with our Product team for further logo options, please select the Cog > Feedback in QuickBooks.
For further support, check out our guides on how to add, customise, and remove logos on sales forms and on customising invoices in QuickBooks Online.
