In this paper we discuss various options for using refundable tax credits t
o reduce the number of uninsured persons. The effect of tax credits on the
number of uninsured depends on the form of the credit scheme adopted. Moreo
ver, since large subsidies for private insurance directed to low-income per
sons have never been implemented, there is considerable uncertainty about t
he effect of various tax credit proposals, We find that small credits will
do little to reduce the number of uninsured but that credits covering about
half of the premium for a benchmark policy might have a significant effect
, especially if they take a fixed-dollar form and can be used for policies
with few restrictions. Finally, we discuss the normative issues surrounding
the "costs" of these credits schemes, and the policy issues raised by the
uncertainty of the effects.