This article analyzes how distortionary factor taxes affect the welfare imp
acts of production subsidies, production quotas, acreage controls. subsidie
s for acreage reductions, and cash transfers to farmers. Pre-existing taxes
substantially raise the costs of all these policies. These additional cost
s reflect the welfare losses from financing certain policies by distortiona
ry taxes. They also reflect interactions with factor markets caused by chan
ges in the costs of producing agricultural output. Previous studies ignore
the latter types of effect. Consequently they significantly overstate the c
osts of production subsidies and understate the costs of production quotas,
aereage controls, and subsidies for acreage reductions.