Abstract Linear programming has been the primary mathematical programming technique for multiple-use land management planning. Over the last two decades, forest planning research has emphasized modeling and computational issues of linear programming, rather than it uses for valuation and economic analysis. This paper shows that postoptimal activity analysis provides an effective tool for economic valuation of multiple-resource outputs and production factors. Marginal value curves are easily derived for both market and nonmarket outputs, and for production factors. This and other information are useful in comparing production alternatives and provide a basis for the economic rationale currently sought in multiple-use planning. Also, an efficient joint cost allocation scheme is proposed for use as an accounting system to track efficiency of production for market goods and to audit for rational evaluation of nonmarket goods. For. Sci. 34(1):3-18.