Growth Doesn’t Break Financial Visibility. Complexity Does.

Ask a finance leader why they lost sight of spend somewhere in the last year, and growth is usually the first word out of their mouth. More people, more departments, more locations, more suppliers, it all sounds like a reasonable explanation for why the tidy spreadsheet that used to work now quietly fails to capture what is actually happening. But growth on its own rarely breaks financial visibility. What breaks it is the complexity that growth creates, and those are not the same problem, even though they arrive together.

Why More People Means More Than More Work

A business that doubles its headcount does not simply double its workload. It multiplies the number of relationships that have to function correctly for anything to run smoothly: who reports to whom, who can approve what, which supplier belongs to which category, which budget a given purchase should sit against. Each new person, system or supplier does not just add to the organisation, it adds a set of new connections to everyone and everything already there.

This is closer to an old idea in organisational economics than it is to a simple staffing problem. Ronald Coase’s 1937 essay on why firms exist at all argued that organisations grow until the cost of coordinating internally starts to outweigh the cost of just going to the market for something instead. Coase was writing about the boundary of the firm, but the underlying logic holds just as well inside one: coordination has a cost, and that cost rises faster than headcount does.

The Maths Behind the Breakdown

The relationship count in a growing organisation does not increase in a straight line. Ten people or ten supplier relationships create up to 45 potential lines of connection that need to stay coherent. Fifty create over a thousand. Nobody sits down and designs for that scaling curve. It simply arrives, department by department, hire by hire, supplier by supplier, until a finance team that once had a clear line of sight to every commitment is instead working from a picture that is several steps removed from what is actually happening on the ground.

That is the moment growth gets blamed. In reality, the organisation has not become less careful. It has become more complex than its existing processes were ever designed to handle, and the visibility gap that follows is a design problem, not a discipline problem.

Where Visibility Actually Goes

Visibility rarely disappears all at once. It erodes in small, individually reasonable decisions: a new department sets up its own approval chain because the central one feels too slow, a regional office starts using a local supplier because the preferred one does not operate there, a manager approves a purchase over email because the formal system has not caught up with a recent reorganisation. Each decision makes sense on its own. Together, they leave finance reconstructing the full picture after the fact rather than seeing it as it happens.

Research into organisational complexity consistently points to the same conclusion: the cost of coordinating diverse, interdependent activities tends to erode margins faster than the benefits of scale improve them, unless something in the organisation is actively designed to absorb that coordination cost rather than let it accumulate unmanaged (Larsen, 2023).

What Restoring Visibility Actually Requires

The instinct, when visibility slips, is to add oversight: another sign-off, another spreadsheet, another monthly reconciliation meeting. That usually adds to the complexity rather than resolving it, because it is oversight applied after the money has already moved. The more durable fix is establishing who is buying, what they are buying, which budget it belongs to and who needs to approve it, before the commitment is made, so that the picture finance is working from is the same picture the rest of the organisation is operating on, in real time rather than in arrears.

That does not mean centralising every decision. It means making sure that as the organisation adds people, departments and suppliers, the process for capturing a commitment scales with it, rather than being quietly outrun by it.

References
Coase, R.H. (1937) ‘The Nature of the Firm’, Economica, 4(16), pp. 386-405.
Larsen, M.M. (2023) ‘Complexity and multinationals’, Global Strategy Journal. Available at: https://sms.onlinelibrary.wiley.com/doi/full/10.1002/gsj.1493 (Accessed: 24 September 2026).