The Sales/Invoices tab in the Billing module provides a listing of all invoices you have created.
 

Click the drop-down arrow in the Show Only box, to filter the list by:

• Open Invoices
• Closed Invoices
• Current Invoices
• Past Due Invoices
• Sales Transactions

Additional filtering criteria can be added by clicking the   icon. 

The list of invoices may be filtered by:

• Invoice date range (by selecting a date range from the Invoice Date
• Payment date range (by selecting a date range from the Payment Date)
• Membership Status
• Goods/Service
• Product Type
• Invoices with Zero Balance
• Past Due Invoices
• Current Invoices
• Credit Balance Available
• Past due invoices by over X days
• Sales Transactions
• Is Empty