The evaluation of automated invoice processing software usually starts with vendors and should start with three numbers from your own team. They take an afternoon to gather, they decide which product shape fits, and they turn the business case from a borrowed average into arithmetic nobody can argue with. Skipping them is the commonest reason these purchases disappoint.
The three numbers
Monthly invoice volume. Median minutes from arrival to approval, timed rather than estimated. And the share of invoices with both a purchase order and a goods receipt behind them. The first two size the labour saving; the third caps how much of it automation can reach, because an invoice with nothing to match against needs a person.
What the numbers tell you
High volume and high minutes means capture will pay quickly. Low purchase-order coverage means the ceiling on touchless processing is low and the first improvement is a policy rather than a product. Long elapsed time with short work means the constraint is approval routing, which is a different and cheaper purchase.
Then compare on behaviour, not features
Exception handling with reasons and owners. Line-level matching with running quantities. Confidence handling and the review screen. Integration and export. These separate products; feature lists do not. Test them on your own worst documents and measure the review minutes you still owe afterwards.
Questions people ask about automated invoice processing software
How long should an evaluation take?
A fortnight of trial with your own documents is usually enough once you have the three numbers. Longer evaluations mostly consume time.
What if the numbers do not justify it?
You have learned something cheaply, and you probably have a process problem to fix first, which is free.
Should we involve purchasing?
Yes, because purchase-order coverage is theirs and it caps everything. A payables project that ignores them often stalls at the ceiling.