Are invoices and payments correlated to be one income? How are invoices and payments kept from being counted twice as income?

Hi there, tamnt54.

Thanks for dropping by the Community. I'm happy to provide some feedback for you. When you send an invoice to a customer, they receive that as a bill in which they have to pay. Upon paying that bill you receive the funds hence the payment being paid to you in a singular amount. For additional information on invoices and our blog you can check out the following links. 

• Invoice templates.
• Creating invoices in QuickBooks Self-Employed.
• QuickBooks Blog.

If there's anything else I can do to help you, feel free to post here any day and anytime. Thanks again and have a great afternoon.