Purchase control is the point of all of this: knowing what has been committed before the invoice arrives, and being able to say no while saying no is still possible. Small businesses usually arrive at the question after a surprise, and then overcorrect by requiring approval for everything, which lasts about six weeks. This page is about getting control that survives: what is actually worth controlling, what should be left alone deliberately, and what a purchase system has to track for the control to be real rather than theatrical.
Control the commitment, not the payment
By the time an invoice arrives the money is gone in every sense that matters; the goods are delivered and the obligation exists. Control that happens at the payment stage is not control, it is reconciliation. The only place a purchase can actually be stopped is before the order goes out, which is why the requisition exists and why purchase requisition meaning comes down to something simple: the request that precedes the commitment. Everything else in a purchase system is bookkeeping around that one moment.
What to leave alone, on purpose
Controlling everything is how control gets abandoned. Set a threshold, exempt recurring committed costs like rent and utilities that are not decisions anyway, and consider a standing allowance for the small consumables people need to do their jobs. The aim is that the number of requests is small enough that each one gets read. A system where fifty requests a week arrive is a system where fifty requests a week get approved unread, which is worse than no system because it produces a record that looks like scrutiny.
What purchase tracking software has to show
Three numbers, at any moment. Committed: approved orders not yet invoiced, which is the figure almost no small business can produce and the one that makes a cash forecast real. Outstanding: ordered and not yet received, which is the operational question. And spend against budget including commitments, which is the figure that stops the overspend rather than reporting it. If a product cannot show the first of those on one screen, it is a form workflow rather than purchase control.
Starting without buying anything
A threshold, a request form, a numbered order and a log will give a company of twenty most of the control available, because the control comes from the sequence rather than from the software. The free request form and generator on this site cover the first three; the log is yours. When the log stops being current, and it will when the volume grows or the person maintaining it goes on holiday, that is the honest moment to move to a record that updates as a consequence of approvals rather than as a separate act of typing.
Questions people ask about purchase control
What is purchase control?
Knowing what has been committed before the invoice arrives, and being able to stop it while stopping it is still possible. It happens at the request, not at the payment.
What is a purchase requisition?
The request raised before the commitment: what is wanted, why, how much, from which budget and by whom. It is the only point at which a purchase can actually be prevented.
Should every purchase need approval?
No, and requiring it is how control gets abandoned. Set a threshold, exempt recurring committed costs, and keep the volume low enough that each request is genuinely read.
What figure should a purchase system show?
Committed spend: approved orders not yet invoiced. Most small businesses cannot produce it, and it is the number that makes a cash forecast real and stops an overspend rather than reporting one.