If you’re new to sourcing African tea, the Mombasa Auction can look opaque from the outside: brokers, lot numbers, sample rooms, grade codes. In practice, the system is logical once you see how a parcel of tea moves from a factory in Rwanda to a buyer’s warehouse in London or Dubai.
Who runs it, and why it exists
The auction is organized and governed by the East African Tea Trade Association (EATTA), a self-regulating body founded in 1956 that brings together producers, brokers, buyers, packers, and warehousemen from across the region. Before Mombasa had its own auction, East African tea was shipped to London to be sold a slow, expensive detour. Today Mombasa is the largest black CTC tea auction center in the world, selling teas from Rwanda, Kenya, Uganda, Tanzania, Burundi, and several other producing countries on a single floor, every week.
The sequence, step by step
- Factories dispatch tea to Mombasa. Once a batch is processed and graded at the factory, into BP1, PF1, dust, and the other grades covered in our buyer’s guide to tea grades it’s shipped to EATTA-registered warehouses in Mombasa and weighed on arrival against the factory’s dispatch note.
- A broker catalogs the lot. Producers don’t sell directly. Each producer appoints a broker, who assigns every batch a lot number and pulls a small representative sample, typically a few kilograms, for buyers to taste and evaluate ahead of the sale.
- Buyers taste before they bid. In the days before the auction, registered buyers and their brokers run tasting sessions on the samples, evaluating color, aroma, body, and consistency against the grade the lot is sold under.
- The lot is auctioned. Bidding happens on the sample, not the bulk, the tea itself stays secured in the warehouse until it’s sold, which is what keeps the process fast and low-risk for both sides.
- Payment and shipment follow a fixed cycle. Since bidding moved to US dollars in the early 1990s, payment is settled in dollars within an agreed number of working days, and the tea is released for export once payment clears.
Why Rwandan tea does well there
This isn’t a minor detail for Rwandan producers, it’s the market. According to NAEB, Rwanda’s National Agricultural Export Development Board, Rwandan tea fetches the highest prices at the Mombasa auction nearly every week, and roughly 80% of Rwanda’s tea exports are sold through the auction system. Rwanda’s tea sector generated USD 114.8 million from close to 38,500 tons of made tea in the 2023/2024 season, according to the same source.
That consistency is the point. Buyers return to origins they trust, and trust at auction is built through years of consistent grading, reliable factory marks, and predictable quality, not a single exceptional lot. We go deeper into what drives that premium, and where the ceiling on it currently sits, in why Rwanda tea tops Mombasa.
What this means if you’re sourcing
For a buyer, understanding the auction changes how you approach sourcing:
- Grade discipline is a proxy for reliability. A factory that consistently delivers a clean BP1 week after week is signaling operational discipline, not just leaf quality.
- Direct trade is an alternative, not a replacement. Roughly a fifth of Rwanda’s tea moves outside the auction through direct sales — useful if you need volume commitments or specification flexibility the auction floor doesn’t easily accommodate.
- Timing matters. Auction prices move with global supply and demand, so buyers working to firm delivery schedules often combine auction purchases with forward contracts.
For the full mechanics of exporting from Rwanda: documentation, certifications, and market entry by region, see our guide to exporting Rwandan tea.
Go deeper
If you’re preparing your first purchase and want the auction process, grading, and direct-trade options laid out in one place, our Mombasa Auction guide for first-time buyers walks through it step by step. Reach out to our sales team for current lot availability and sample requests.
