A major constraint on the design and implementation of grain market liberalization throughout the world is governments' concerns with retaining enough influence over the evolving system to distribute prices and incomes to various groups in politically desired ways. This article considers the effects of alternative forms of maize market reform on various socioeconomic groups and the marketing board's operations in Zimbabwe. Based on results of a dual-market, spatial equilibrium model, partial and more complete reform create substantially different distributional effects. However, urban consumers and many rural small-holders would be better off with either consumers and many rural small-holders would be better off with either configuration of market reform consi-prices. The full benefits of market reform require active government support for the development of private trade.