Invoice calculations

The value of any invoice is distributed across the transactions held within the invoice in in different ways, depending on markups/down, and happens in the following situations:

• Invoice creation
• Pre-billing (when the prebill is closed off)
• Post-billing

When the invoice stage is a markup (i.e. invoice value > charge value) 

• Timesheet value will be marked up proportionally and expense value is maintained.
• If expenses only (i.e. no timesheet), then expenses will be marked up proportionally.

When the invoice stage has no markup (i.e. invoice value = charge value)

• All transactions maintain their value.

When the invoice stage is a markdown (i.e. invoice value < charge value) 

 Timesheets and expenses 

• If total expense charge value < invoice value then timesheets are marked down proportionally and expense value is maintained.
•  If total expense charge value = invoice value then timesheets all have an invoice value of zero, and  expense value is maintained
•  If total expense charge value > invoice value then timesheets all have an invoice value of zero,        and expenses are marked down proportionally

Expenses only

• Expenses will be marked down proportionally