A vendor told a bicycle-parts manufacturer near Ludhiana that the next shipment would sit at the dock until an invoice from six weeks back got paid. The money was in the account. The invoice was three folders deep in an inbox, never checked against the purchase order that would have confirmed the amount was even correct.
That single unmatched invoice is what put a working relationship with a supplier at risk, not a shortage of cash. It happened because accounts payable at the manufacturer ran on whichever staff member remembered to check email that week, and nobody had ever priced out what that habit was actually costing until a vendor forced the question by threatening to stop the shipment.
The costing, once someone finally ran it, wasn't the usual case for AI hype. A 2025 study of 247 organisations running intelligent automation across financial processes found a median first-year ROI of 150%. The highest returns in that same dataset, 150 to 300%, came specifically from automating accounts payable, ahead of both receivables and reconciliation. Of the money automation returns to a business, more of it sits in the invoice-matching step than almost anywhere else finance touches.
Where AP automation ROI concentrates
That's the part that makes the manufacturer's situation harder to write off as bad luck. The highest-ROI process on that list is frequently the one running with the least oversight, because unlike a factory floor slowdown, an unmatched invoice doesn't show up on any dashboard until a vendor calls. Most owners can name their biggest expense line without hesitation but can't say how many days, on average, an invoice sits before someone checks it against the purchase order that would confirm it. Nobody has actually costed out what leaving the process manual is already costing them, so the fix with the fastest payback keeps losing to whatever problem is loudest that week.
PwC and the Observer Research Foundation put a number on what's at stake nationally, projecting AI could add USD 135.6 to 149.9 billion in value creation for India's manufacturing MSMEs alone by 2035. That figure means little to a single manufacturer chasing one overdue invoice. What matters at that scale is smaller and more immediate: whether an invoice gets matched to its purchase order in a day, automatically, or sits until someone happens to open the right folder.
None of this is a five-minute fix. Matching an invoice to a purchase order automatically only works if the purchase order itself lives somewhere a system can read it, and for a lot of SMEs that data is split across a paper file, a WhatsApp confirmation, and someone's memory of what was agreed on the phone. Getting that into one place is the actual work, and it's the part that gets skipped when automation gets sold as a single tool install rather than a cleanup job first.
The invoice that almost cost a shipment
Pull your own vendor payment history for the last quarter and count how many invoices took longer than two weeks to clear. That number, not a productivity estimate from a report, is the real cost of leaving accounts payable unattended, and for most SMEs it turns out larger than they'd guess before they actually check.