Invoice database allows user to create invoice for client, on a specific case and keeping track of sent invoice.

To create invoice, user has to select Client and Case to which that invoice is attached to.  

All items needs to be filled in, so invoice could be print out or sent by email. 

Invoice gives several options to user: Item name, quantity or hours of service, discount rate, actual rate , tax included or not, and final amount. One invoice can have as many items as user needs. 

When user enter payment status, bottom left button will change its color to green. Payment methods can be found on a popup on a click on this button.