Working Capital Stretch, What It Actually Costs

Every distressed business does it at some point. Cash is tight, so payments to suppliers slip a few days. Then a few more days. Then a few weeks. The suppliers do not usually complain immediately; they may not even notice at first. The business owner feels they are buying time to work through the tight period. What they are actually doing is borrowing at rates they would never accept from a formal lender, from counterparties who do not know they have become lenders.

This piece sits under the turnaround pillar on the Turnaround Check tool. It walks through what working capital stretch actually costs a business, and why the number is usually significantly bigger than the owner thinks.

The explicit cost, lost early-settlement discounts

The first cost is the visible one. Where a supplier offers an early settlement discount (typically 1 to 3 percent for payment within ten days versus thirty days), stretching payment beyond the discount window loses the discount. On an invoice of R100,000 the loss is R1,000 to R3,000. That does not sound like much until it is repeated across every supplier invoice for every month of the year.

For a business with monthly supplier spend of R2 million where 25 percent of suppliers offer an early settlement discount averaging 2 percent, the annual cost of losing the discount is: R2 million x 25% x 2% x 12 = R120,000 per year. That is real cash out of the business, in exchange for the intermediate benefit of the delayed payment.

The implicit interest cost

The second cost is less visible but usually larger. When a supplier is not paid on the agreed terms, they are lending money to the business at an implicit rate. If the supplier had used its cash to fund its own working capital rather than lending it to the buyer, it would have earned something on the deployment; the buyer that stretches the payment is capturing the value that the supplier's alternative use of cash would have produced.

Suppliers usually respond over time by raising their prices to reflect the higher risk and slower cash conversion. The price increase may be labelled as "cost pressure" or "market inflation" but it is often a specific response to the buyer's payment behaviour. A price increase of 2 to 3 percent on a supplier that used to be the price leader is often the moment the implicit interest becomes explicit. For a business with monthly supplier spend of R2 million, a 2 percent price step-up is R480,000 per year that would not have happened without the payment stretch.

The relationship cost

The third cost is qualitative and often underweighted by owners under cash pressure. Suppliers who have been stretched over time do not forget. When the buyer later needs a supplier favour (a rush order, an extended payment for a genuinely one-off cash squeeze, a technical support engagement outside contract), the supplier's willingness to help is materially lower than it would have been if the payment history had been clean.

The relationship cost is difficult to quantify in advance but is usually visible in retrospect. When a distressed business enters formal restructuring or business rescue, the suppliers who have been stretched are the ones who most readily vote against the rescue plan and most readily agree to convert to prepayment or COD terms that eliminate credit exposure. The relationship history has closed off the option of extended cooperation at the moment cooperation is most needed.

The step-up cost

The fourth cost is the eventual step-up when suppliers respond to sustained stretching. The response is usually one of three patterns.

Shortened credit terms. The supplier moves the buyer from 30-day terms to 14-day terms, or from 60-day terms to 30-day terms. The step-up compresses the working capital cycle by fifteen to thirty days, requiring the business to find cash in that window or lose the supplier.

Prepayment or COD. The supplier moves to cash on delivery or requires prepayment for future orders. This eliminates supplier credit entirely and requires the business to fund the full working capital cycle. For a business with monthly spend of R2 million on a 30-day cycle, moving to COD requires an additional R2 million of working capital to be found immediately.

Refusal to supply. The most severe response. Where the supplier is critical (unique input, sole source, technical specification), the response can be operationally catastrophic. Where the supplier is not critical, the business will need to switch to a new supplier at short notice, often at higher price and with disruption to the operational rhythm.

The compounding cost, other suppliers watching

The fifth cost is that suppliers talk to each other. In smaller industry communities the news that a buyer has become slow-paying travels across the supplier base within a few months. Suppliers who have not yet been stretched begin to tighten their credit exposure proactively; suppliers who were considering extending credit to the buyer decide not to. The credit response spreads across the supplier base even where the buyer has been careful about which suppliers to stretch.

The compounding cost is often the largest, but is the hardest to see because it operates through the absence of things that would otherwise have happened. The buyer does not know about the credit terms it did not receive.

The comparison, formal borrowing at commercial rates

The counter-factual comparison is what the buyer would have paid to borrow the same amount from a formal lender at commercial rates. A business with a healthy credit profile can borrow overdraft or short-term working capital at 12 to 16 percent annualised in the current South African rate environment; a business with a stressed credit profile borrows at 18 to 24 percent. The lost early-settlement discount of 2 percent for a payment stretched by twenty days annualises at roughly 36 percent, and the price step-up of 2 to 3 percent from suppliers is a permanent increase in the cost base that continues indefinitely. Working capital stretch is much more expensive than formal borrowing at almost every scale, unless the business is so distressed that formal borrowing is unavailable, in which case the underlying problem is not the working capital cycle but the loss of access to credit markets.

What owners should do

For a business under short-term cash pressure, the disciplined response is:

Quantify the true cost. Add up the lost discounts, the anticipated price step-ups, and the implicit interest. Compare the total against the cost of formal short-term borrowing at commercial rates. Where formal borrowing is available and cheaper, use it in preference to supplier stretch.

Communicate proactively with suppliers where stretch is unavoidable. Where supplier stretch is genuinely unavoidable, engage the affected suppliers directly. Explain the position, offer a payment plan, and honour it. A supplier who is told directly is less likely to respond punitively than one who has to chase the payment.

Avoid selective stretching. Do not stretch the suppliers who are easiest to stretch (the small ones, the ones without other options) while paying the ones who complain loudest on time. Selective stretching is unfair to the smaller suppliers and creates concentrated relationship damage in the parts of the supplier base least able to absorb it.

Recognise the escalation path. Working capital stretch that goes beyond three months signals a fundamental cash generation problem, not a timing problem. Where the stretch is not resolving within three months, the business needs to consider formal turnaround intervention rather than continued informal stretching.

Cross-jurisdictional considerations

The pattern applies across jurisdictions. Different jurisdictions have different late payment frameworks (the UK Prompt Payment Code, the EU Late Payments Directive, comparable frameworks elsewhere) that give suppliers formal remedies for late payment. Businesses that stretch suppliers in jurisdictions with strong late payment frameworks face the additional cost of formal supplier response through those frameworks.

What good looks like

A business that manages working capital with discipline, uses formal borrowing rather than supplier stretch where borrowing is available, communicates proactively with suppliers where stretch is genuinely unavoidable, and recognises when the stretch is signalling a deeper problem is a business that preserves its supplier relationships and its optionality.

A business that stretches suppliers informally and repeatedly is a business that erodes its supplier relationships, accumulates hidden costs that eventually surface as price increases and shortened credit terms, and often ends up in formal restructuring anyway but with less supplier support than it would otherwise have had.

The CentraSolve Turnaround Check tool quantifies the true cost of working capital stretch and models the alternative of formal borrowing at commercial rates.

References

Foundational literature

Slatter, S., and Lovett, D. (1999). Corporate turnaround: Managing companies in distress. London: Penguin.

Regulatory frameworks

Republic of South Africa. (2008). Companies Act 71 of 2008. Pretoria: Government Printer.