The kwacha has weakened from K17.87 per dollar in June to roughly K19.9 in early October, even with copper selling near US$14,000 a tonne. The gap between those two facts is a story about timing: export earnings arrive on the mines’ schedule, while the fuel bill falls due every month.
KEY TAKEAWAYS
- The kwacha has weakened from K17.87 per dollar in June to about K19.9 in early October, giving back most of a gain that began the year at K20.31, as dollar demand from fuel and other imports outpaces the arrival of copper receipts.
- Copper at about US$14,000 a tonne helped Zambia to a K30.1 billion trade surplus in the first seven months of 2026, but mining dollars reach the market on the mines’ payment schedule, not on the days importers need them.
- Oil above US$100 a barrel pushed the ERB to raise pump prices to K31.46 for petrol and K33.27 for diesel in October, and changes in fuel-import arrangements have shifted more petroleum dollar demand into the commercial FX market.
- The Bank of Zambia’s cut in the policy rate to 10.75% is a supporting factor rather than the cause: the arithmetic of imports, not interest rates, is doing most of the work on the exchange rate.
- The danger is a second-round effect, in which a weaker kwacha raises fuel and input costs, prices climb, and businesses buy dollars early to beat further depreciation, adding fresh pressure on the currency.
The kwacha’s weakness is a rebalancing of the foreign-exchange market, not a collapse. The country is earning dollars from copper sales at prices around US$14,000 a tonne, and it is spending dollars on fuel, machinery, mining equipment and other imports at a faster pace. The outflows are landing in the market before the inflows do. That mismatch, more than any single policy decision, explains a rate that travelled from K20.31 per dollar in January to K17.87 in June and back out to roughly K19.9 in early October.
Whether the adjustment stops here is the question that matters for prices, wages and next year’s budget arithmetic. A correction that returns the kwacha part of the way is manageable. A slide that runs for another two quarters would work its way into pump prices, transport fares and the cost of every imported input, and from there into inflation.
A strong half-year, partly returned
The first six months of 2026 were kind to the kwacha. The currency gained roughly 12 percent between January and June, inflation settled inside the Bank of Zambia’s target band, and reserves held above four months of import cover, as we reported in our review of the second quarter.
Since then the rate has drifted back toward K20. On paper the external accounts still look steady: Zambia recorded a trade surplus of K30.1 billion in the first seven months of the year, driven by copper receipts. The currency market is telling a more precise story. The supply of dollars in any given week does not follow the annual trade account. It follows payment calendars.
Copper dollars arrive on their own schedule
A mining company selling copper at US$14,000 a tonne does not deliver those dollars to the interbank market the day the metal leaves the country. Receipts sit in accounts while suppliers, contractors, shareholders and lenders are paid. Only a share reaches the market, and it arrives when it suits the mines, not when an importer’s letter of credit falls due.
An importer bidding for dollars to clear a fuel shipment competes in that weekly market, not in the trade statistics. That is how a country can post a healthy surplus for seven straight months and still watch its currency soften. Zambia’s surplus is copper-heavy and concentrated in a handful of large mines, so the weekly supply of dollars depends on the disbursement decisions of a few treasury desks.
The fuel bill sets the floor for demand
Fuel has become the loudest voice in the demand queue. Oil has moved above US$100 a barrel, lifting the petroleum import bill at the same time as changes in fuel-import arrangements have brought more of that dollar demand directly into the commercial FX market.
The Energy Regulation Board has already passed part of the bill to consumers. Petrol rose to K31.46 a litre and diesel to K33.27 for October, ending six months of relief at the pump, as we reported when the new prices took effect. Petroleum is the hardest kind of dollar demand to defer. The country runs on imported fuel whatever the exchange rate does, and the bill arrives every month.
Global dollar strength adds a further layer. When the US currency firms against major trading partners, import bills rise across emerging markets, and Zambia feels it through the oil price and through the cost of everything else shipped in from abroad.
The rate cut is a supporting factor, not the cause
The Bank of Zambia cut its policy rate to 10.75%, and some commentary has pinned the kwacha’s weakness on the decision. The cut is a supporting factor at most. Lower kwacha yields reduce the return on holding local-currency assets, which can nudge some demand toward dollars, but the decision did not create the fuel bill and it does not set the payment calendars of the mines. The arithmetic of imports is doing most of the work.
The second-round effect is what to watch
The first round is already visible at filling stations, as we set out in our analysis of the October price shock. The second round is the risk. A weaker kwacha raises the local cost of fuel and imported inputs. Higher fuel costs pass into transport and production costs. Businesses that expect further depreciation buy dollars ahead of their needs, which adds demand and presses on the rate again.
Inflation is the gauge. It settled inside the target band by the middle of the year. If the coming prints start climbing on the back of fuel and transport costs, the loop will be forming, and the Bank of Zambia’s room to keep easing will shrink with it.
The copper-oil paradox
Underneath the monthly movement sits a structure Zambia has carried for decades. Copper brings the dollars in and fuel takes them out. The currency’s fortunes reduce to a race between one export price and one import price, both set in markets Zambia does not control, and in recent months the import price has been winning.
This is why Finance Minister Situmbeko Musokotwane’s push for export-led growth deserves to be read as exchange-rate policy as much as industrial policy. An economy that earns dollars from several sources on several calendars produces a currency that does not hinge on a single commodity cycle.
What a resilient kwacha would rest on
The response that works is not defending a particular level of the rate. It is widening the base of dollar earnings until the market can clear at a stable level on its own: agriculture and agro-processing selling into the region, manufacturing, tourism, services and copper value addition. Each of these earns foreign exchange on a different calendar from the mines, which is the point. A kwacha backed by one export is a kwacha on loan from the copper price.
Conclusion
For now, the move from K17.87 to about K19.9 reads as a market finding its level after an unusually strong half-year, stretched by an oil bill that will not wait for copper receipts to arrive. The numbers that decide what happens next are the oil price, the pace at which mining dollars reach the interbank market, and the inflation prints due in the coming two months. Zambia has been in this position before. The difference a diversified export base would make is that the answer would no longer depend on copper alone.
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