Rapid herd expansion is pushing U.S. milk production higher, increasing the risk that supply growth outpaces demand and pressures producer margins into 2027. In September, U.S. milk production increased 2.6% year over year, while the dairy herd reached 9.74 million cows, its largest size since 1992. Production per cow was also 18 pounds higher than a year earlier, meaning both a larger herd and improved productivity are adding milk to the market. Even if herd growth slows near current levels, continued productivity gains could keep milk supplies expanding in 2027, meaning supply pressure is likely to persist.
New processing capacity has provided an outlet for that additional milk, but more processing does not necessarily mean more demand. Cheese inventories ended September 2% above year-ago levels, while butter stocks were 16% higher, suggesting production is not matched with consumption. With domestic cheese and butter demand relatively soft, exports have become increasingly important. U.S. dairy exports were up 7% year-to-date through August on a total-solids basis, led by a 22% increase in cheese and 41% increase in butter. Continued export growth will be critical to absorbing additional supplies and supporting dairy prices.
Historically strong beef revenue has also helped fuel dairy expansion, but that incentive is beginning to weaken. Beef-on-dairy day-old calf and cull cow sales have provided an additional source of revenue for dairies, helping offset tighter milk margins. Cull cow prices, however, have fallen about 25% from the highs reached in May, and beef revenue is expected to decline in 2027 while remaining historically strong. As this supplemental income source moderates, one of the financial incentives supporting aggressive herd growth will begin to weaken.
Ultimately, tighter margins could become the primary constraint on further dairy expansion. Growing milk supplies are pressuring prices while producers continue to face elevated feed and operating costs. If margins narrow and beef revenue declines, producers may become less inclined to add cows, eventually slowing supply growth. With margins expected to remain tight into 2027, risk management will remain important. Producers may consider tools such as Dairy Revenue Protection (DRP) and Dairy Margin Coverage (DMC), with DMC enrollment for 2027 open through Dec. 18.
Western producers face additional regional risks. In California, ongoing litigation involving dairy discharge requirements could affect the regulatory environment surrounding future expansion. In Washington, confirmed cases of highly pathogenic avian influenza (H5N1) in October add another animal-health risk. H5N1 has been reported in 27 dairy herds over a three-week period. For affected dairies, the financial impact is primarily tied to lost milk production from sick cows, along with additional testing and management costs. For processors, outbreaks could temporarily reduce available milk supplies from affected herds.
Profitability
Dairy: Slightly profitable - Neutral 12-month outlook
Despite persistent pressure from low milk prices and elevated production costs, many dairy producers have maintained slight profitability due to strong supplemental income from cattle sales. As calf values retreat and feed costs rise, that profitability buffer is shrinking, creating a more challenging outlook.
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