Hey there, @mm1061. 

Thanks for joining in on this thread. I can help you change the default invoice template in your QuickBooks Online account. 

All you need do is locate the standard/default template and edit the template there. Here's how: 

1. Go to the Gear (Settings) icon in the top right-hand corner. 
2. Under the "Your Company" column, pick Custom form styles. 
3. Locate the Default/standard template and hit Edit. 

From there, you'll be able to make the changes you want. For future reference, here's a guide: Customize invoices, estimates, and sales receipts in QuickBooks Online.

That should do the trick. Feel free to reach back out if you need me. Take care!