Supply chain finance and dynamic discounting: the working capital lever CFOs underuse

Most finance teams know that working capitalworking capitalWorking capital is the difference between a company's current assets and current liabilities, measuring short-term liquidity and the funds available to run daily operations.View full definition → is a source of funding. Far fewer have a clear operational grip on the two tools that sit at the intersection of payables management and supplier relationships: supply chain finance (SCF) and dynamic discounting. They are often lumped together under vague headings like "payables optimization," which obscures the fact that they work through completely different mechanisms, serve different treasury objectives, and carry different risks for the supply chain itself.

Why it matters for the CFO role specifically

The CFO's job in working capital management is to hold cash longer without damaging the business relationships that depend on suppliers getting paid. That tension is not academic. A company extending payment terms unilaterally from 30 to 90 days may free up significant cash on its balance sheet, but it can push smaller suppliers into distress, raise input costs over time as suppliers price in the financing risk, or trigger reputational problems. ESG-linked procurement ratings now track supplier payment practices, and several large institutional investors actively monitor this.

SCF and dynamic discounting are, at least in theory, ways to resolve that tension: the buyer gets extended terms or retains cash longer, and the supplier gets paid faster than the invoice due date. The question is who bears the cost and who captures the benefit.

How it actually works: the mechanics

Supply chain finance

In a classic SCF program, a bank or fintech platform sits between the buyer and its suppliers. The buyer confirms an invoice as approved, and the supplier can then sell that receivable to the financing provider at a discount. The supplier receives cash almost immediately, the financing provider waits for the buyer to settle on the agreed extended terms (often 90 to 120 days), and the buyer has effectively used its credit rating to give its suppliers access to cheaper short-term funding than they could obtain independently.

The cost of the discount is based on the buyer's credit rating, not the supplier's. That spread can be substantial for smaller suppliers in industries like auto parts or food processing, where buyer credit ratings are investment-grade but supplier ratings are not. Supplier savings on financing costs can reachreachThe number of unique people exposed to your message in a given period. Unlike impressions, reach counts each person once, no matter how often they see it.View full definition → 200 to 300 basis points compared to their standalone borrowing costs, according to research published by the Global Supply Chain Finance Forum, a multi-bank industry body (note: the GSCFF is an industry association representing financial institutions, so its figures carry a commercial bias and should be verified against independent sources).

A concrete example: a UK retailer with a 60-day standard payment cycle extends its terms to 90 days and enrolls key suppliers in an SCF program through a bank like HSBC or a platform like Taulia (now part of SAP). A clothing supplier owed £500,000 on a confirmed invoice can access £495,000 in three days rather than wait 90 days for the full amount. The retailer holds cash for an additional 30 days, deploying it in operations or short-term instruments.

Dynamic discounting

Dynamic discounting works without a third-party financier. The buyer uses its own cash to pay suppliers early in exchange for a discount on the invoice value. The earlier the payment, the larger the discount. A sliding scale might offer 2% for payment in 5 days, 1.5% for 15 days, 0.8% for 30 days.

This tool only makes sense when the buyer has surplus cash earning little on its balance sheet. If the buyer's excess liquidity is sitting in money market funds at 4.5% (a realistic figure in 2025 and into 2026), then offering a supplier a 1% annualized discount for early payment is a poor trade. But if rates drop and idle cash earns close to zero, dynamic discounting can generate annualized returns of 10% to 18% on deployed cash, depending on the discount curve negotiated.

Platforms like C2FO (now part of Greensill's successor entities, with a complex ownership history worth verifying before signing) and Taulia offer dynamic discounting modules where suppliers can opt into offers through a self-service portal.

When to use it, and when not to: the honest tradeoffs

SCF makes sense when the buyer wants to extend payment terms without supplier pushback, when the buyer has a strong credit rating relative to its supply base, and when its own cash is already fully deployed. The program shifts the financing burden to a bank and keeps the relationship intact.

The risks are real, though. Accounting treatment of SCF has attracted regulatory scrutiny. The IASB clarified guidance in 2023 making it harder for buyers to keep SCF-funded payables classified as trade payables rather than financial debt. Buyers with large SCF programs may face reclassification that affects leverage ratios and debt covenants. The collapse of Greensill Capital in 2021 also demonstrated how fragile SCF structures can become when the financing provider itself runs into liquidity problems, leaving suppliers exposed mid-cycle.

Dynamic discounting carries none of that reclassification risk, and it keeps the buyer fully in control. The limitation is obvious: it requires surplus cash, which is precisely what many companies are trying to conserve.

Neither tool works well when extended payment terms are imposed on small suppliers without their genuine consent. Regulators in the EU, through the Late Payment Regulation revised in 2024, and in the UK through the Prompt Payment Code, are tightening disclosure requirements and enforcement. A CFO building an SCF program primarily to mask aggressive payment term extensions will face increasing scrutiny.

The practical rule is straightforward: use SCF when you need to extend terms and your credit quality can subsidize supplier financing costs; use dynamic discounting when you carry idle cash and want a disciplined, low-risk return on it. Combining both in a tiered program, with SCF for strategic suppliers on longer terms and dynamic discounting for smaller invoices, is the structure most large corporates with mature treasury functions have adopted.

Getting either tool wrong costs more than the cash you were trying to free up. Getting both right turns your payables cycle into a funded position that your balance sheet reflects accurately and your suppliers can actually sustain.