QuickBooks - Invoices vs Sales Receipts - What"s the Difference?

Sales Classes

Invoices and Sales Receipts are not quite the same thing in QuickBooks. Although they both record sales information, that is where their similarity ends. Here is a breakdown of what each does.
Invoices
With Invoices you have more flexibility than with Sales Receipts:

Estimates...
QuickBooks - Invoices vs Sales Receipts - What"s the Difference?