Construction invoicing software

Progress billing goes wrong when nobody can say what is left of the contract. The invoice list holds every outgoing document — progress invoices, final invoices, ordinary invoices and credits — with net, tax rate, gross and the amount still open, and the payment column spells the situation out in words: eight days overdue at reminder level two, paid on a date with discount, or open and not yet due.

Raising one starts from the billing basis: contract sum including posted change orders, what has already been billed, and what remains. A document carries up to one hundred line items with description, DIN 276 cost group, quantity, unit, unit price and degree of completion, and the server calculates each net position as quantity times price times completion. Line items may point at a measurement of the same project. The reverse charge option forces zero percent and the required notice.

Issuing the document reserves the next number, numbers progress invoices per project and writes the project billed sum in the same transaction; number, date, tax and amounts then stay fixed and a financial correction becomes a credit. The retention percentage kept in the project is deducted from the payable amount without touching the gross figure. Overdue documents advance one reminder level at a time up to the third, individually or through a single dunning run.