additive / cumulative billing method

Advance invoices for a construction project can be settled using either an additive or a cumulative billing method.

• cumulative
  The amounts of your previous partial invoices will be deducted from this new invoice amount in the end. For the origin of the quantity, this means that the quantities from the previous installment invoices must increasingly be continued.

• additive
  Each partial invoice is printed out like an "individual invoice". Only the actual increases are to be invoiced, so that no net deduction of the previous installment invoices is necessary. Only the values ​​from this new invoice are to be taken into account for the origin of the quantity.

For example:
Five partial invoices and a final invoice are issued. With every invoice, an additional € 10.000 is billed as an increase in value.

You have the option of switching between billing methods within a single process. As soon as you complete an area, for example by submitting a partial final invoice, you can switch between cumulative and additive accounting methods in the subsequent partial invoice.

For example:
A construction project is billed cumulatively with a partial final invoice and the later bills for the completion maintenance additively, i.e. individually according to the maintenance process.

From the second partial invoice for a construction project or after a partial final invoice, the invoice is printed on the Settings tab the option Cumulate advance payment invoices to disposal. Activate Select the option to use the cumulative billing method or deactivate it to bill cumulatively.

Quantity origin