Milk prices on the up – supply and demand

With the start of the academic year in New Zealand the first week of teaching usually looks at the price mechanism and scarcity. A good example in the NZ economy is the reasoning behind the payout that Fonterra pays its farmers that supply them with milk. Fonterra is a monopsony (they have approximately 81% share of the NZ dairy market) in that it is one buyer and many sellers (the farmers) – the farmers look to Fonterra to get them the best price in the Global Dairy market. Fonterra has indicated that the price for the current 2021/2022 season is going to be between $8.90 to $9.50/kgMS.

The mid-point is $9.20/kg and at that level it will be paying out New Zealand suppliers $13.8 bln – see graph below. Ultimately the price of the Fonterra payout is determined by supply and demand on the Global Dairy Trade auction – see below.

Why have prices increased?

Supply – there has been weak production in New Zealand and overseas with poor weather with challenging growing conditions and higher feed costs. Fonterra lowered its forecast on the amount of milk collected by 1.6% – 1,525 million kgMS in 2020/21 to 1,500 million kgMS in 2021/22. A lower production outlook for Europe and North America has increased the forecast milk price.

Demand – demand globally remains strong with North Asian buyers securing over 50% of the total volume sold in the recent Global Dairy Auction. According to the OECD the world per capita consumption of fresh dairy products is projected to increase by 1.0% p.a. over the coming decade, slightly faster than over the past ten years, driven by higher per-capita income growth. Today total dairy consumption in Africa, South East Asian countries, and the Middle East and North Africa is expected to grow faster than production, leading to an increase in dairy imports. As liquid milk is more expensive to trade, this additional demand growth is expected to be met with milk powders, where water is added for final consumption or further processing.

How does the GDT work?

GlobalDairyTrade trading events are conducted as ascending-price clock auctions run over several bidding rounds.  In each auction a specified maximum quantity of each product is offered for sale at a pre-announced starting price. Bidders bid the quantity of each product that they wish to purchase at the announced price. If the price of a product increases between rounds, to ensure their desired quantity a bidder must bid their desired quantity at the new, higher price. Generally, as the price of a product increases, the quantity of bids received for that product decreases. The trading event runs over several rounds with the prices increasing round to round until the quantity of bids received for each product on offer matches the quantity on offer for the product (as shown in the diagram below). Each trading event typically lasts approximately 2 hours.

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