Foreign exchange risk management

Foreign exchange risk arises whenever a company deals in more than one currency — cross-border sales and purchases, foreign borrowings, foreign subsidiaries. It comes in three forms, and classifying which one a scenario describes is the first mark in most exam questions.

Transaction exposure comes from committed foreign-currency cash flows. An export sale to a US customer with payment due in 90 days is the standard case: if the dollar weakens against the kwacha before payment, each dollar converts to fewer kwacha. It is the most immediate and the most quantifiable exposure — an amount, a currency, a date.

Translation exposure comes from consolidating a foreign subsidiary's accounts into the parent's currency. Restating its assets, liabilities and earnings at a new exchange rate changes reported equity and profit without a single cash flow moving — an accounting effect, but one that can still breach loan covenants written on reported numbers.

Economic exposure is the long-run effect of exchange rates on competitive position and future cash flows. A stronger kwacha makes Zambian exporters less price-competitive abroad, shrinking sales that were never yet contracted. It is the hardest exposure to quantify and hedge, and the most strategically important.

A quote of USD/ZMW 12.50 says one dollar costs 12.50 kwacha. Every rate can be stated either way round — kwacha per dollar, or its reciprocal, dollars per kwacha — and misreading the direction is the cheapest way to lose marks, so fix the convention before touching the arithmetic: in this course, USD/ZMW means kwacha per one dollar.

Banks quote two rates: the bid, at which they buy the currency from you, and the ask (offer), at which they sell it to you. A quote of USD/ZMW 12.48–12.52 means the bank buys your dollars at 12.48 and sells you dollars at 12.52, and the 0.04 spread per dollar is its margin. You always deal at the rate worse for you — that is what the spread means.

Cross rates matter in Zambia because kwacha pairs beyond the dollar are thin: a company invoicing in rand or pounds prices through the dollar legs whether it notices or not.

The spot rate is for delivery now (settlement in a day or two); a forward rate is agreed today for delivery at a future date. Forwards are not a forecast — they are arithmetic, derived from the spot rate and the interest differential between the two currencies.

The lecture's example: spot USD/ZMW 12.50, dollar rates 4% a year, kwacha rates 12% a year, six-month forward. Forward = 12.50 × (1 + 0.06) ÷ (1 + 0.02) = 12.50 × 1.0392 = 13.00 kwacha per dollar.

The kwacha stands at a forward discount — 13.00 forward against 12.50 spot — because its interest rates are higher. The logic is arbitrage, not prediction: holding kwacha pays 12% while holding dollars pays 4%, so the forward price must compensate the dollar holder for the yield given up, or everyone would ride one side of the trade. High-interest currencies always trade at forward discounts.

Before paying for financial hedges, treasury should shrink the exposure at its source. Five operational strategies do that, in rising order of sophistication.

• Insist on kwacha payment — the simplest move, shifting all FX risk to the counterparty. Dominant firms can enforce it; smaller ones may lose the deal to rivals who will take dollars.
• Currency surcharges — invoice in kwacha with a clause adding a surcharge if the rate moves beyond a set band, sharing the risk instead of holding it.
• Leading and lagging — collect receivables early in currencies you expect to weaken; delay payables in them. Useful, but it is a position on the currency — speculation wearing operational clothes.
• Natural hedging — match currency inflows with outflows: a firm earning dollars from exports sources its inputs in dollars, so gains and losses offset without any contract. The cheapest durable hedge there is.
• Netting — bilaterally, two companies owing each other dollars settle only the net amount; multinationals run multilateral netting through a clearing centre, collapsing gross intercompany flows and the conversion costs on all of them.

A forward contract commits both parties to exchange a fixed amount of currency at a set rate on a set date — binding both ways, like the FRA in the previous step, and for the same reason cheap: no premium, because you keep no choice.

The lecture's hedge: an exporter is due USD 500,000 in three months. Spot is 12.50, the three-month forward 13.00, and the fear is kwacha appreciation. The exporter sells USD 500,000 forward at 13.00.

Currency futures are the exchange-traded version: standardised contract sizes, margin posted, marked to market daily, closeable at any time. The lecture's XYZ Ltd expects USD 2,650,000 in three months, with September futures at 9.92 against a 10.11 spot. At USD 62,500 a contract it sells 42 contracts (rounding 42.4 down — futures' fixed sizes mean small unhedged tails are normal). If spot falls to 8.25, the receivable converts to only ZMW 21,862,500, but the futures gain (9.92 − 8.25) × 42 × 62,500 = ZMW 4,383,750 — total ZMW 26,246,250, close to the locked-in rate.

A currency option gives the buyer the right, not the obligation, to exchange at a strike rate on or before a future date — a call is the right to buy the foreign currency, a put the right to sell it. The buyer pays a premium up front and then keeps the choice: exercise if the market moved against them, walk away and keep the favourable market rate if it moved for them.

Matching the option to the exposure: an importer due to pay USD 1 million buys the right to obtain dollars at a fixed kwacha rate — protection if the kwacha weakens, freedom to buy cheaper dollars in the market if it strengthens. An exporter due to receive dollars buys the right to convert them at a fixed rate, with the same one-sided logic. The premium is what the one-sidedness costs.

The kwacha's own record is the closing argument for taking all of this seriously. A free float since 2015 has swung from around K8 per dollar past K25 and back towards the low teens, driven by copper prices, inflation and capital flows, with the Bank of Zambia intervening only occasionally. For a Zambian firm with dollar receivables or debt, the question is never whether to think about FX risk — only which of these tools, operational first and financial second, fits the exposure.