US Corn and Wheat Growers Face Basis Pressure Ahead of Harvest

The corn basis has been weak in the US, raising concerns among growers about their income as they prepare for harvest. The situation is not unique to corn, as wheat markets are also experiencing pressure from strong carry and historically weak cash basis.

According to market specialists, the current spread between July and December 2026 corn futures reached its narrowest point in January before steadily adding carry. This suggests that supplies remain relatively comfortable despite recent reductions in yield forecasts. The national average corn basis has been consistently among the weakest levels of the past decade.

The difference between futures and cash markets can be significant for growers, as it directly affects their income per acre. While futures respond rapidly to market developments, basis reflects conditions closer to physical grain movement. In this case, a weak basis indicates that buyers are not struggling to secure immediate supplies, which could limit the staying power of the current price rally.

The situation is similar for wheat markets, where Kansas City spreads have been narrowing as the market adjusts to an unusually small US winter wheat harvest. Despite tighter production expectations, hard red winter wheat basis remains historically weak, showing that smaller production does not automatically translate into immediate cash-market strength.