How do I make the font larger on my invoices

Hello, @grahammoore1.

At this time, we aren't able to change the font for invoices in QuickBooks Online. You can try zooming in the Invoice page to see the texts in a larger size but when printing or sending the invoices, the appearance 

If you wish you, you can import a customized invoice with the desired font you need. For your reference, check out these articles:

• Import custom form styles for invoices or estimates
• Customize invoices, estimates, and sales receipts in QuickBooks Online

I understand the importance of making the font larger on invoices, @grahammoore1. I'll take note of this and pass along the suggestion to our product engineers. This way, they'll be able to know our customer's needs and might consider the feature in the coming updates.

Also, feel free to visit our blog to stay current with our QuickBooks news and updates.

Tap on me if you have any other questions. I'm a post away to help. Have a wonderful weekend!