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The Refinery Took the Cargo. Then It Took 180 Days to Pay.

End buyers in commodity trade can take delivery and delay payment for months. How large buyers use their market position to extend payment beyond terms.


A copper concentrate trader shipped 8,000 MT to a smelter in India. The contract specified payment 90 days from the bill of lading date. The provisional invoice was issued upon shipment. The final invoice — based on the quotational period average of LME copper prices and deductions for treatment and refining charges — was issued at 90 days. Payment was due upon final invoice. The smelter acknowledged the final invoice. The smelter did not pay.

At 120 days, the trader's finance team sent a reminder. The smelter's accounts payable department said the invoice was "in process." At 150 days, the trader's commercial team called the smelter's procurement head — the same person who had negotiated the purchase. The procurement head said there was an internal approval delay and payment would be made within two weeks. At 180 days, the payment arrived. The trader had financed $6.4 million of copper concentrate for 180 days instead of 90. The incremental financing cost — 90 additional days at the trader's borrowing rate of 8% per annum — was approximately $126,000. The trade margin was $192,000. The late payment consumed 66% of the margin.

The smelter paid in full. There was no dispute over quality, quantity, or price. The payment was simply late by 90 days, and the delay was treated by the smelter as an unremarkable aspect of their cash management.

Large Buyers Delay Because They Can

This pattern is concentrated among large industrial end users — smelters, refineries, steel mills, power utilities — that purchase from mid-sized traders. The end user's market position gives them commercial advantage that the trader cannot easily counter. The smelter in this example purchases 200,000 to 300,000 MT of copper concentrate annually from a dozen suppliers. The trader supplies 20,000 to 30,000 MT — less than 15% of the smelter's total intake. If the trader threatens to suspend supply over late payment, the smelter can source from another supplier within weeks. The trader cannot replace the smelter as a customer with the same ease.

The payment delay is not accidental. It is a cash management strategy. Large industrial companies optimize their working capital by extending payables. Every day of delayed payment to suppliers is a day of free financing for the buyer. On $6.4 million delayed by 90 days at 8%, the smelter saved approximately $126,000 in financing cost — the same $126,000 that the trader absorbed.

Industry estimates suggest that in metal concentrate trades involving mid-sized traders and large smelters, payment delays beyond contractual terms occur on roughly 30 to 40 percent of transactions. The average delay is 30 to 45 days beyond terms. Delays of 90 days or more are less common — perhaps 10 to 15 percent of transactions — but represent the cases where the trader's cash flow impact is most severe.

The operational question for traders is not how to prevent late payment — large buyers will pay when they choose to pay — but how to price the risk of late payment into the trade and how to structure the transaction to limit the cash flow impact.

The Contract Terms Exist. The Enforcement Does Not.

The copper concentrate contract included a late payment interest clause — LIBOR plus 2% on overdue amounts. The trader could have applied this clause and invoiced $126,000 in late payment interest (though the contractual rate was lower than the trader's actual borrowing cost). The trader did not apply the clause. Why? Because invoicing late payment interest to a major customer risks damaging the commercial relationship. The smelter's procurement team would receive the interest invoice, escalate it to management, and the next contract negotiation would begin with a counterparty that is irritated rather than neutral.

This is the enforcement gap in commodity trade. Contracts contain late payment provisions. Traders rarely enforce them against large buyers. The commercial cost of enforcement — potential loss of the customer — exceeds the financial cost of absorbing the late payment. The late payment clause serves as a theoretical deterrent rather than a practical remedy.

Traders who manage this dynamic more effectively use two approaches. First, they build the expected payment delay into their pricing. If the trader expects that the smelter will pay at 120 days instead of 90, the trader prices the trade with a 120-day cash cycle, adding 30 days of financing cost to the minimum acceptable margin. This means the trader quotes a slightly higher premium — typically $3 to $8 per MT depending on the commodity and financing cost — which the buyer may or may not accept. Second, they use receivables financing — selling the smelter's payment obligation to a bank or forfaiter at a discount, converting the 90-day (or 120-day or 180-day) receivable into immediate cash. The discount rate — typically 3 to 6% per annum — is lower than the trader's own borrowing cost and eliminates the cash flow risk entirely.

The copper concentrate trader eventually implemented receivables financing for sales to this smelter, reducing the cash cycle from 90+ days to 5 days at a cost of approximately 4.5% per annum. The margin was slightly lower, but the margin was real — collected within a week of shipment, not subject to the smelter's payment schedule. The trader who waits 180 days for payment and absorbs the financing cost without adjusting the price or the structure is subsidizing the buyer's working capital from the trader's margin. That subsidy is invisible in the pricing sheet and visible only in the P&L. The traders who see it adjust for it. The traders who do not see it wonder why their margins are thinner than their pricing models predict.


Keywords: buyer payment delay physical commodity trade cash flow | large buyer payment delay commodity, receivables aging commodity trader, end user payment risk physical trade, commodity buyer payment stretching
Words: 944 | Source: Industry pattern — documented across multiple sources | Created: 2026-04-08