There is a number that moves every morning in New York and London. It dictates what you pay for the coffee that fills your espresso machine, regardless of which roaster you buy from. Most café operators have never looked at it directly. Yet your monthly margin tracks it more closely than you might suspect. This is the C-Market.
What the C-Market actually is
The C-Market is the futures market for coffee. The ICE Futures US in New York trades arabica futures under the ticker KC; the ICE Futures Europe in London trades robusta futures under RC. These are contracts, not bags of coffee — buyers agree to take delivery of a quantity of green coffee at a price set today, for delivery in a specific future month. Most of these contracts are settled in cash; only a small fraction result in physical delivery.
Why does this matter to your café? Because every commercial coffee purchase in the world references this price. Your roaster buys from importers. Importers buy at the C plus a “differential” (a premium or discount based on origin and quality). Your roaster adds their roasting margin, freight and packaging. By the time the bag reaches you, the C-Market price is baked deep into your cost structure.
Arabica vs robusta — two different markets
Arabica trades on the New York exchange and tends to be the more volatile of the two. Brazil and Colombia are the dominant suppliers; weather events in either country move prices weekly. Robusta trades on the London exchange and has historically been calmer, dominated by Vietnam, Brazil and Indonesia. For most specialty hospitality operations, the arabica price matters most. For decaf, second-line espresso blends and supermarket coffee, robusta is the reference.
In 2026 the two markets have decoupled in ways nobody predicted three years ago. Vietnam’s robusta crisis has pushed RC prices to historic highs, while KC has been more range-bound. The spread between the two has narrowed dramatically. That has changed how blends are priced and how decaf is sourced.
How the price ripples down to your bag
There is a chain between the C-Market and the bag of coffee on your bar:
- The C-Market sets the futures price for the contract month (for example May 2026 arabica).
- Importers price physical coffee at the C plus a differential. A Brazilian commercial-grade lot might trade at “C +5” (five cents per pound above the C). A high-scoring Ethiopian washed lot might trade at “C +200”.
- Roasters buy from importers and add their cost (labour, energy, finance, packaging) and margin.
- The roaster prices your bag — most lock prices for 30, 60 or 90 days.
- You pay that price. When the C moves up, the next price you see from your roaster will too.
This is why C-Market spikes feel like they take months to reach you. The futures market moves daily; physical coffee contracts run for weeks; roaster price lists update monthly. There is a lag, but the direction is the same.
What moves the C-Market
The major drivers, in rough order of impact:
Weather in Brazil. Frost (June to August), drought, excessive rain — Brazil produces around 40% of the world’s coffee, so any disruption registers immediately on the price tape.
Vietnam supply. For robusta in particular, Vietnamese harvest projections and climate news move prices.
Currency. Coffee is priced in US dollars. When the dollar strengthens against producer currencies, farmers can effectively sell at lower dollar prices, which puts pressure on the C. When the dollar weakens, the opposite happens.
Speculation. Hedge funds and commodity trading houses take positions on coffee futures. Their flows can amplify moves driven by fundamentals.
Shipping and freight. Container rates, port congestion and geopolitical events (the Red Sea, for example) do not move the C directly but widen the differentials, which is what you actually pay.
What this means for your café in 2026
Three practical takeaways:
First, understand the lag. If you see the C-Market drop 20% this week, do not assume your next bag will be 20% cheaper. The roaster pricing has not caught up yet, and the contracts on its books were locked at higher prices.
Second, think in terms of differentials. The C is the baseline. What you actually pay reflects the quality and origin premium on top. A 20% drop in the C might mean very little to a high-scoring Ethiopian washed lot — its differential is already so high that the C component is a smaller share of the price.
Third, build a buffer. The C-Market can move 30% in a quarter. If your menu pricing was designed around last year’s coffee cost, you are exposed. Building a small buffer into your pricing and reviewing it twice a year is the simplest defence.
Where to track it yourself
The ICE Futures US site publishes settlement prices daily. Bloomberg, TradingView and Investing.com all carry live KC and RC charts for free. A weekly five-minute look at the tape is enough to spot the moves that matter. If you want help interpreting what you see, we cover the major weekly moves in our newsletter — sign up below.
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