Why the RBZ is holding the line on Zimbabwe's 70/30 export split

The RBZ Just Told Exporters No — the 30% Currency Surrender Rule Isn't Going Anywhere Exporters wanted this rule loosened. The central bank said no twice — once to local exporters, once to the IMF. Here's why it's holding firm on a rule that shapes how much foreign currency actually reaches the formal market. The numbers, plainly In its mid-term monetary policy statement, the Reserve Bank of Zimbabwe rejected calls from exporters to lower the foreign currency retention threshold. The rule stays at 70/30 — exporters keep 70% of foreign currency earned and must convert 30% to ZiG at the willing-buyer, willing-seller interbank rate. This framework was introduced in February 2025, when the RBZ cut the retention threshold from 75% to 70%, raising the surrender portion from 25% to 30%. The RBZ has also separately rejected an IMF recommendation to lower the mandatory requirement. Why it happened / the mechanism Picture a Zimbabwean exporter receiving US$100 from a customer abroad. Under the current rule, they keep US$70 in foreign currency and convert US$30 to ZiG at the interbank rate. That converted US$30 isn't confiscated — the exporter does receive ZiG for it — but it's no longer available to them as US dollars. That distinction matters because exporters generally prefer holding dollars: it's what pays for imported raw materials, machinery, fuel, travel, and foreign debt. Every dollar forced into ZiG is a dollar not available for those foreign-currency obligations, and if the ZiG received loses value faster than what those dollars could have bought, the rule squeezes margins and working capital. The RBZ's counter-argument is about where those surrendered dollars go. It says the 30% feeds directly into the formal willing-buyer, willing-seller interbank market — the same market that lets importers access foreign currency to settle legitimate invoices. In effect, every export transaction becomes a guaranteed drip of dollars into the formal system, whether or not that exporter would have chosen to sell those dollars voluntarily. Why this matters This is a straightforward supply-and-demand story for the exchange rate. A stable currency needs a transparent market where supply and demand actually meet. The 30% surrender is a supply-side rule — it guarantees the formal market gets dollars regardless of market sentiment, which can reduce pressure on the ZiG and make prices more predictable. The trade-off cuts both ways: too high a retention ratio and exporters may lose the incentive or capacity to grow, especially when most of their costs are in foreign currency. Too low, and the formal market doesn't get enough supply to function. The RBZ's current position is that 70/30 is the right balance — and it's held that position against pushback from both exporters and the IMF. What does this mean for the common person Most people aren't running export businesses, but this rule still touches daily life in a few indirect ways: If you work for or depend on an export business (mining, agriculture, manufacturing for foreign markets) — this rule affects that company's cash flow and, potentially, its capacity to invest, hire, or raise wages, since more of every export dollar goes into ZiG conversion than under the previous 75/25 split. If you're an importer, or buy imported goods — groceries, fuel, equipment, spare parts — the RBZ's argument is that this rule is part of what keeps foreign currency flowing into the formal market that importers rely on. Whether that translates into easier, cheaper access depends on how well that interbank market actually functions. For everyone — a more stable exchange rate, if this rule genuinely contributes to one, tends to mean steadier prices generally. But that benefit is indirect and depends on the whole system working as intended, not something you'd see as a line item anywhere. Keep the scale in mind This is a policy cost, not a hidden tax — exporters do receive ZiG for the surrendered portion, they just don't get to choose whether or when to convert it. The real risk sits in the trade-off itself: if the retention ratio is discouraging export growth or investment, that's a cost that builds slowly and isn't easy to see in any single data point. The RBZ's own credibility and the quality of the interbank market matter here too — a supply-side rule only helps stability if the market it feeds is actually transparent and functioning well, not merely well-intentioned on paper. Closing takeaway For now, the message from the central bank is continuity: the 30% surrender stays, and the RBZ sees no near-term case for changing it. The arrangement sits right at the intersection of business cash flow and currency stability — worth watching because any future change, in either direction, would immediately shift how much foreign currency exporters keep and how much reaches the formal market.