CORPORATE FINANCE

Working Capital: Tool or Patch

Alfonso Martínez Ruiz
Founder and Chief Executive Officer, Montclare Capital Partners · Published August 2026 · Reviewed August 2026

A working capital line is the most ordinary instrument in corporate finance, which is precisely why it is the most commonly misused. It renews every year with little ceremony, it sits in the background of the group’s banking relationships, and nobody examines it closely as long as it is available. Facilities like that escape scrutiny for years, and what they are quietly financing escapes scrutiny with them.

The same facility, from the same bank, for the same amount, can be a precise tool in one company and a slow-moving problem in another. The difference is not in the instrument, the pricing or the documentation. It is in what the money is actually doing, and that question, tool or patch, is one that owners rarely ask while the answer is still theirs to choose.

What working capital finance actually finances

Almost every business pays before it collects. It buys stock, pays salaries, pays suppliers, delivers, invoices, and then waits for the invoice to be settled. The gap between the cash going out and the cash coming in is the operating cycle, it is measured in weeks or months, and something has to fund it. In a business that is growing, the gap grows with it, because more sales mean more stock and more receivables before they mean more cash.

Working capital finance exists to fund that gap and nothing else. It bridges timing: the importer building inventory ahead of the season, the contractor carrying certified but unpaid work, the trading company whose suppliers demand payment terms shorter than the ones its customers enjoy. In every legitimate use, the need is temporary by nature even when it recurs every year, because it is created by the cycle and released by the cycle.

That is the defining feature of the instrument: it is self-liquidating. The stock is sold, the receivable is collected, and the drawn balance is repaid out of the very cycle it financed. The repayment source is built into the use. A lender advancing against a working capital need is not betting on the company’s long-term future so much as on the completion of a cycle that is already in motion, which is why this money is the most accessible debt most companies will ever raise.

Set against that are the term uses: buying an asset, funding construction, acquiring a company, absorbing a loss. None of them is self-liquidating within an operating cycle. All of them need money whose maturity matches the life of what it pays for. Putting any of them inside a working capital line is where the patch begins, and it rarely begins deliberately.

The facility used as a tool

Healthy use has a visible shape. The drawn balance breathes: it rises when the cycle demands cash and falls when the cycle releases it. Over a full year the utilisation chart of a well-used facility looks like the business itself, with its seasons, its campaigns and its quiet months. There are periods, at the bottom of the cycle, when the facility is barely used at all, and those periods are not a sign that the limit is too high. They are the proof that the instrument is doing its job.

Sizing follows the arithmetic of the cycle rather than the ambition of the owner. How long stock sits before it sells, how long customers take to pay, how long suppliers allow, and what the resulting funding gap is at its seasonal peak. A facility sized that way has a reason behind its limit, and the reason can be shown to the lender. A facility sized as high as the bank will allow has a different logic, and lenders can tell the two apart faster than borrowers assume.

A tool ages well. Renewal is straightforward because the account itself tells the story: the balance moves, the facility cleans down, the cycle completes. Each year of that pattern compounds into credibility, and credibility is negotiating room. The company that has used its line as a line gets the increase when growth genuinely requires one, gets flexibility when a season runs long, and gets the benefit of the doubt in a bad year. That stored goodwill is invisible on any balance sheet, and it is one of the most valuable things a finance function can build.

The facility used as a patch

The first signal of a patch is a balance that never comes down. The line is described as revolving, but the drawn amount has a hard floor it never touches, and that floor has been rising. A permanently drawn revolving facility is not working capital finance. It is term debt with an annual maturity, which is the worst term debt available, because the company’s funding is now renewed every year at the lender’s option, on the lender’s terms, with the lender free to change its mind.

The second signal is growth in the limit that outruns growth in the business. Increases requested not after a strong season but after a difficult one. Each extension is explained by circumstances, and each explanation is individually plausible, which is what allows the pattern to continue. Nobody decided to fund the company this way. The facility simply absorbed, quarter after quarter, whatever had no other funding, because it was the money that asked the fewest questions.

What the permanent core of the balance is actually financing is the uncomfortable question. Sometimes it is an accumulated loss that was never recognised as one. Sometimes it is capital expenditure that deserved a term loan, or the repayment of other debt, or distributions the results did not support, or a large customer who pays late and whose real cost has never been measured. In every version, a structural need has been financed with the shortest money available, and the mismatch between the life of the problem and the maturity of the funding is itself the risk.

The danger is concentrated at renewal. Short money funding a permanent need means the company’s continuity is re-underwritten every year, and the year the bank hesitates will not be a convenient one, because banks reduce limits in response to the same deterioration that makes the company least able to absorb a reduction. A patch does not fail gradually. It fails at a renewal date, all at once, with little notice and less sympathy.

The lender can read the account

Borrowers sometimes believe the true use of a facility is theirs to present. It is not, because the lender does not depend on the presentation. The current account and the facility history tell the story on their own: the utilisation pattern and whether it breathes, the presence or absence of clean-down periods, the aging of the receivables offered as justification, the drift between the limit and the turnover that is supposed to explain it. A credit analyst with a year of statements can classify the facility in an afternoon.

What follows from the classification is rarely announced. A lender that concludes it is holding a patch does not usually call the loan. It de-risks quietly: a little more security at renewal, a guarantee where there was none, a slightly reduced limit, tighter information requirements, pricing that drifts upward. The borrower experiences this as the bank hardening for no reason. The reason is that the account has been read, and the reading was not the one the borrower would have given.

The reading matters even more on the borrower’s side, because the patch hides the size of the problem from the people who could fix it. As long as the line covers the hole, the hole has no number, appears in no management discussion and triggers no decision. The cost of that comfort is time: the years in which the structural problem was affordable to fix, spent instead on financing it.

Replacing the patch with the right structure

Timing the repair to the renewal calendar changes who leads it. Working capital lines renew, typically annually, and the renewal is when the lender’s quiet reading becomes explicit. A borrower who arrives at renewal with the split already measured, the permanent core named and a refinancing plan for it, is presenting a repair and will usually keep the revolving line on good terms while the core moves elsewhere. A borrower who arrives having drawn the same balance for another year is presenting the problem, and the renewal becomes the negotiation in which the lender fixes it on its own terms. The facts are identical in both meetings. The difference is which side of the table has already acted on them, and that difference is worth starting the measurement two quarters before the date on the facility letter.

The repair starts with a measurement, not a negotiation. Split the drawn balance into the part that breathes with the cycle and the part that never leaves. The breathing part is working capital and has earned its facility. The permanent core is something else, whatever the facility agreement calls it, and it needs permanent money: a term loan with a maturity matched to the need, new equity, or financing raised against assets the group actually owns.

For a group that holds real estate, the last route deserves particular attention. An unencumbered or lightly leveraged asset can be turned into term liquidity through a mortgage-backed loan, and that liquidity can retire the permanent core of the working capital line entirely. The debt does not disappear, but it moves to a structure with the right maturity, secured on the right asset, leaving the revolving line free to do the one job it is good at. The group’s funding then matches the shape of its needs, which is the whole discipline of corporate finance in a single sentence.

The structural repair only holds if the cycle itself is repaired with it. Collections that drift, stock that sits too long, customer terms granted too easily: these are operating decisions wearing a financing costume, and no facility fixes them. Financing buys the time to correct the cycle. It is not a substitute for correcting it, and treating it as one is how the next patch begins.

None of this requires a crisis to be worth doing. The measurement costs a spreadsheet and an honest afternoon, and it is the cheapest piece of corporate finance work a group will ever commission from itself.

Tool or patch is not a judgment about the instrument. It is a question about the money’s job, and it has an honest answer in every company at every moment. Asked early, by the owner, it is a structuring decision made with alternatives on the table. Asked late, it is asked by the bank, at renewal, when the alternatives have narrowed to whatever the bank proposes. The entire value of the question lies in who gets to ask it first.

Montclare does not act as a lender. It structures transactions, prepares the file and coordinates financing with authorised institutions.