Kenya has spent years championing a single East African market, then drafted a budget that taxes one. The Finance Bill proposes a 35 percent excise duty on glass bottles imported from EAC partner states, reversing an exemption granted in 2021 and reopening a question the bloc was supposed to have settled: whether the East African Community is one market or six tariff regimes that occasionally agree. The measure threatens to add roughly US$7.7 million to the costs of Tanzania’s Kioo Ltd, a glass manufacturer that supplies bottlers across the region.
The sum is specific, but the principle is what makes this a regional row rather than a line item.
The Reversal: Undoing a 2021 Concession
The duty does not arrive in a vacuum. It reverses a 2021 exemption that had allowed glass bottles to move between EAC members without this excise charge, the kind of concession the Common Market is built to deliver. Withdrawing it sends manufacturers a destabilising signal: that hard-won regional access can be rescinded in a single budget cycle.
For a capital-intensive producer such as Kioo, that unpredictability is costly even before the US$7.7 million bites. Factory investment in glass is sized to a market, and a market that can be fenced off by a partner state’s Finance Bill is a smaller, riskier one to plan around. Critics in Dar es Salaam have argued the move sits awkwardly with Nairobi’s stated commitment to dismantling, not raising, barriers to intra-EAC trade, a tension set out in an opinion piece in The Citizen.
The takeaway: an exemption that can vanish in one budget was never really an exemption.
The Mechanism: How a Duty Becomes a Barrier
A 35 percent excise on imported glass functions, in practice, as a non-tariff barrier dressed as a domestic tax. It raises the landed cost of EAC-made bottles in Kenya, tilting the field toward locally produced or non-EAC alternatives and chipping at the principle of free internal movement that the Customs Union and Common Market protocols promise.
The effect ripples beyond the glassmaker. Bottlers, brewers and beverage firms that buy glass face higher input costs, and those costs tend to reach the shelf. A measure aimed at one product class quietly taxes a supply chain that crosses borders, which is precisely the kind of friction the EAC was designed to remove. And because glass is a heavy, low-value-to-weight input, the regional logic of sourcing it from the nearest competitive plant is strong; a duty that overrides that logic forces firms toward less efficient choices, raising costs without any guarantee of building durable local capacity in return.
The takeaway: a duty does not need to be called a tariff to behave like one.
The Stakes: A Test of the Common Market
The deeper stake is institutional. The EAC’s credibility rests on members honouring the commitments they sign, and the bloc has channels, from the EAC Secretariat to its dispute mechanisms, for exactly this kind of complaint. How the proposal is resolved, whether through bilateral talks, amendment of the Bill, or a formal challenge, will signal how binding those commitments really are.
Kenya remains one of the region’s largest economies and a vocal advocate of integration, which is why the contradiction matters: when the bloc’s loudest champion of free trade raises a barrier, smaller members read it as licence to do the same. Reciprocal measures rarely stay contained, and a single excise line can seed a round of tit-for-tat duties that no member ultimately wins. The cost is measured not only in Kioo’s US$7.7 million but in the confidence of every manufacturer sizing a plant to serve the whole region.
For operators across East Africa, the lesson is to price political risk into regional supply chains rather than assume integration is irreversible. The single market is real, but it is also, as this row shows, still negotiable one Finance Bill at a time.
