The bulk of the impact would be felt at farm gate.
South African wine volumes shipped to the United States fell 64 percent between 2023 and the first half of 2026, according to customs data obtained from the United States International Trade Commission (USITC) and reported by SMF News. The decline, measured against a 21 percent fall for Chile over the same period, points to a market that was weakening before new U.S. tariffs arrived and then became harder to defend once trade policy shifted.
The timeline matters. SMF News reports the slide began before the 30 percent U.S. tariffs took effect on August 1, 2025, which were subsequently reduced to 12.5 percent in July 2026. Agricultural economist Prof Nick Vink of Stellenbosch University said the tariff changes worsened the decline through the uncertainty they created. "One of the most important characteristics of good policy is consistency," he said, comparing the erratic tariff changes to unscheduled load-shedding: both make it difficult to plan ahead. He added that labels which lose U.S. shelf space rarely win it back.
The commercial damage is landing at origin. Dr Kandas Cloete, senior analyst at the Bureau for Food and Agricultural Policy, told SMF News that a 2025 study commissioned by the Western Cape Department of Agriculture found that adding the current duty to existing prices makes South African wine non-competitive in the U.S. market, given that major competitors face lower duty rates. "The bulk of the impact would be felt at farm gate." Distribution and shipping costs stay largely fixed regardless of what producers receive, so the duty squeeze flows straight to growers and wineries.
Inventory pressure
The U.S. problem is colliding with a supply problem at home. Two successive above-average harvests have pushed South African inventory to levels close to those seen during the Covid-19 pandemic, when trade disruptions halted market access. Cloete said the stock buildup has been made worse by softer global wine consumption and weaker purchasing power in export markets, leaving producers with more wine to sell into a market that is buying less.
Earlier this year, UNCTAD's February 2026 Global Trade Update quantified the competitiveness gap. By early 2026, U.S. imports of South African wine were about 17 percentage points more expensive relative to other wine-exporting countries than in 2024, BusinessDay reported, citing the UNCTAD data. South Africa Wine reported that packaged wine exports to the U.S. fell 21 percent in volume and 23 percent in dollar value in 2025. The stakes are national: the industry contributes R56.5 billion to South Africa's GDP and employs 270,364 people across the value chain, with 85,962 working on farms and cellars, according to South Africa Wine Industry Information and Systems (Sawis).
What producers should watch
The U.S. accounts for roughly 5 percent of South African wine exports by value, so Vink cautions that the aggregate sector impact cannot be measured precisely. The British market offers a counterpoint: South African volumes to the UK fell just 2 percent over the same period, market share rose from 19 percent to 22.3 percent, and the realized price per liter for bottled wine climbed 12 percent in the UK even as it fell 20 percent in the U.S. Siobhan Thompson, CEO of Wines of South Africa, attributed the U.S. decline to "a combination of factors rather than a single cause," including consumer demand changes and distributor consolidation. For producers, the lesson is blunt: a mid-tier export market built on price cannot survive simultaneous tariff pressure, distributor consolidation and inventory overhang. Diversification into markets where South African wine holds pricing power, notably the UK, is no longer optional.