Editing the default notes on your invoices is easy!
NOTE: This is a great place to add manual payment instructions for customers who need to mail checks; or make electronic payments via 3rd party payment apps, and bank transfers like ACH (in the United States), SEPA (In the UK), BACS (in the United Kingdom), and BECS (in Australia).
FROM THE WEB APP
Step 1: Go to Settings > Edit Company Profile
Step 2: Customize your 'Default Invoice Notes'
Step 3: Save & Done!

FROM THE MOBILE APP
This setting can only be edited from the web app at this time.