Welcome to the Community, John. Currently, QuickBooks Online doesn't have a built-in option to change the font size of the Statement of Account.
If you are just trying to read it in your screen, you can customize the appearance on the Print & Preview page. Just use the Automatic Zoom drop-down menu or scroll your mouse while holding down the CTRL key.
However, If you want to print it with a bigger or smaller font size, you can adjust the settings in your browser's print options as a workaround.
Here's how:
Go to the three vertical or horizontal dots in the top right corner of your screen.
Select Print or press CTRL + P in your keyboard.
In the Scale section, adjust the size to your preference.
Once you've made your adjustments, you can save it as a PDF and print it out.
If you have any further questions, don’t hesitate to reach out. We're here to assist!
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