Sending the invoice
The document has to pass a system before it reaches a person. What makes it payable on arrival.
Yourswho controls this stretch
What Makes an Invoice Payable
An invoice is payable when a machine can match it and a person can approve it. Nine things decide that, and all nine are yours.
Where the Invoice Actually Goes
Sending it to the person who gave you the work is the most natural mistake in invoicing, and it costs a month.
Cut-Offs, and the Day You Send It
Invoicing on the 2nd rather than the 28th can move payment by a month. The dates that do it belong to the buyer and are freely given.
Submitting Through Their System
A supplier portal is a gate with its own rules, its own clock and nobody to ask. What it checks, and how to stop it rejecting you.
What Has to Be on the Document
An invoice has a legal minimum, a practical minimum and a useful maximum. The three are different and the gap between them matters.
Rejected Without a Message
Most rejections are silent: the invoice is parked and nobody is told. How to find out, and what the common causes are.
The Only Free Move You Have
Everything else available to a supplier costs something. Sending the invoice correctly costs nothing and removes most of the delay you can affect.