There is a point in a company's growth where the way it buys things stops working, and almost nobody sees it coming. It is rarely a dramatic failure. There is no single day when procurement breaks. Instead the cracks widen quietly, until one day a contract auto-renews that should not have, or an invoice gets paid that nobody can tie back to an agreement, and someone asks how that happened.

For a lot of companies, that point sits somewhere between 50 and 250 employees. Here is why.

What worked at 40 people was never a process

In a small company, buying is not a system. It is a set of relationships and habits. One or two people know every supplier. They remember the renewal dates. They know which invoices look right because they negotiated the deals themselves. The "process" lives in their heads, and at that scale, that is fine. It is even efficient.

This is the trap, though. It works so well that nobody builds anything to replace it. Why introduce approvals and a contract repository when a quick conversation does the job? The informal approach is not a stopgap waiting to be upgraded. It is the default, and it feels permanent.

Then the company grows, and the conditions that made it work disappear one by one.

The three things that quietly change

The vendor base outgrows anyone's memory. At 40 people you might have twenty or thirty suppliers, and one person can hold the whole picture. At 150 people you have a hundred or more, spread across more categories, and no single person can keep them all straight. The renewal dates that lived in someone's head now live nowhere.

Buying decentralises whether you intend it or not. As teams grow, more people start buying things. A department lead signs up for software. A site manager orders supplies from a new supplier because it was faster. None of this is rebellion. It is convenience. But it means purchasing is now happening in a dozen places with no shared record. This is exactly how tail spend, the long tail of small scattered purchases, turns into a multimillion-euro leak, and where off-contract buying takes root. McKinsey has estimated that this kind of maverick spend can account for 20% to 30% of indirect spend leakage.

The cost of a mistake grows faster than the company. A missed renewal at 40 people might cost a few thousand euros. At 150 people, with bigger contracts and longer commitments, the same mistake can cost an order of magnitude more. The informal process did not get worse. The stakes got higher, and the process never scaled to match.

Why nobody fixes it in time

The reason this gap persists is that the symptoms are easy to misread.

When a renewal slips, it looks like one person's oversight, not a systemic gap. When spend visibility gets murky, it looks like a reporting problem for finance to solve, not a procurement one. When an invoice gets overpaid, it looks like a one-off. Each incident gets patched individually, and the underlying cause, that the company outgrew its informal process, stays invisible.

There is also a staffing illusion at play. Companies often assume that procurement maturity is about hiring, that the answer is more people watching more spreadsheets. But adding headcount to a process built on memory and email just spreads the same fragile process across more hands. World Commerce and Contracting found that contract data sits scattered across roughly 24 systems in the average organisation. More people do not consolidate that. A system does.

What "fixing it" actually looks like

The fix is not a sudden leap to enterprise procurement. Mid-size companies that handle this transition well tend to do three unglamorous things, in roughly this order.

First, they create a single source of truth for vendors and contracts. Not a better spreadsheet, but one place where the current answer lives, with renewal dates and key terms attached to each agreement rather than held in someone's memory.

Second, they make the important dates impossible to miss. Renewal and obligation alerts turn the highest-cost mistakes, the missed renegotiation, the unwanted auto-renewal, from likely events into unlikely ones. This is usually the fastest return available, because it requires almost no change to how people work.

Third, they bring purchasing requests into a light approval flow. Not a bureaucratic gate that people route around, but a simple path that is easier to follow than to skip. The Hackett Group's research is blunt on this: when the compliant path is slower than the workaround, people take the workaround. The goal is to make compliance the path of least resistance.

Notice what is not on this list: ripping out the ERP, hiring a procurement department, or buying an enterprise suite. The transition that works is incremental. It replaces the parts of the informal process that have become liabilities, and leaves the rest alone.

The real lesson

The companies that struggle most are not the ones that lack discipline. They are the ones whose informal process worked too well for too long. Success at small scale hid the need to build anything, and by the time the cracks showed, the cost of the gaps had already started compounding.

If your company is somewhere on the road from 50 to 250 people, the useful question is not "is our procurement broken." It is "what are we still doing from memory and email that now carries a much bigger price tag than it used to." The answer to that question is usually where the next avoidable, expensive mistake is waiting.

Frequently asked questions

At what size does a company outgrow informal procurement? There is no exact number, but the strain commonly shows between 50 and 250 employees. The trigger is less about headcount than about vendor count, how decentralised buying has become, and how large the cost of a single mistake has grown.

Do we need to hire a procurement team to fix this? Not necessarily, and headcount alone rarely solves it. Adding people to a process built on memory and email just spreads a fragile process more widely. A single source of truth and automated renewal tracking often deliver more than additional hires.

What is the first thing a growing company should fix in procurement? Usually contract visibility and renewal tracking. Consolidating vendors and contracts into one place, with renewal dates attached and alerts enabled, addresses the highest-cost, most common mistake first, and requires little change to how people work.

Why do small process failures get ignored until they're expensive? Because each one looks like a one-off. A slipped renewal reads as an individual oversight, not a systemic gap. The shared root cause, an informal process the company has outgrown, stays invisible until the costs compound.

ProcuHelp helps European companies in the 50 to 250 employee range replace memory-and-email procurement with one source of truth, automated renewal tracking, and light approval flows. Without ripping out the ERP or building a department.

Sources: McKinsey (maverick spend leakage estimates); World Commerce & Contracting (fragmented contract data research); The Hackett Group (procurement process compliance research).