Welcome to the Community space, @teacheryee.
Let me provide details regarding the percentage or flat rate fees applied by QuickBooks Self-Employed when a customer pays an invoice using a credit card.
As of the latest update, QuickBooks Self-Employed generally charges the following rates for invoicing and quick request credit card transactions. The processing fees incurred each time a customer pays an invoice or quick request online are as follows:
Cards
Visa, Mastercard, Discover, American Express
2.99%
Digital wallets
Apple Pay, PayPal, and Venmo
2.99%
ACH bank payments
Electronic money transfers that pull money from a customer’s bank account into yours.
Furthermore, you can check this article to learn how to manually add service fees to invoices in QuickBooks: Manually add service fees to invoices.
In addition, feel free to visit these handy articles for future reference in managing your invoices:
You can always reach out if you have any other questions or concerns about payments and invoices in QuickBooks Self-Employed. Leave a comment below, and I'll be more than happy to assist you. Take care and have a great day!