What if my contract runs on invoices rather than applications?

Plenty of construction work is bought on terms that never mention applications: the order says invoice monthly, or on delivery, or against milestones. What changes is which document operates the payment machinery, not whether there is one. Where the work is a construction operation, the Construction Act still requires an adequate payment mechanism, filled in by the Scheme for Construction Contracts where the contract is silent, so the invoice still carries dates: a Due Date, a Final Date For Payment, and notice obligations on the payer if they mean to pay less than the sum claimed. The consequences are three. The invoice starts the clock, so a late invoice is self-inflicted late payment: send it the day the entitlement arises, not when the office next has a quiet afternoon. It must be right first time, the purchase order quoted, the entity correct, the breakdown matching what was agreed, because a bounced invoice restarts the queue rather than the law. And track each invoice to its Final Date For Payment, because on invoice-led terms nobody sends you a certificate to disagree with; silence looks like acceptance right up until the money fails to arrive. Know which regime the contract runs before the first bill: some orders are hybrids, applications for the measured work and invoices for the rest, and the protections attach to operating the right document on the right date.

Take a groundworks contractor whose order simply says invoice monthly. Invoices go out whenever the office has a quiet Friday: sometimes the 28th, sometimes the 9th. Nobody can say which are due when, so nothing is chased until the bank balance pinches, and one invoice with a mistyped purchase order number sits unpaid for eleven weeks without anyone noticing. The fix is unglamorous: an invoice the day each month's entitlement arises, carrying the references the payer's process needs, logged with its Final Date For Payment, and a diary that flags the first day it is late. On the next job the same contractor reads the order first and finds a hybrid, applications required for the measured work, invoices only for the daywork, and runs each document on its own regime. Cash starts arriving on a rhythm, not because anyone fought, but because the right paper went out on the right day and somebody was watching the calendar.