1) Because the mortgage tax deduction distorts between home ownership and renting, while the insurance deduction distorts between insurance and out-of-pocket health care consumption
2) In addition to these distortions, they both encourage overconsumption of their products
3) Hollowing out the tax base through this type of deduction reduces revenue in a way which can only be made up by increasing marginal rates. Marginal rates are the most important determinant of the deadweight loss of taxation at the work/leisure frontier
2) In addition to these distortions, they both encourage overconsumption of their products
3) Hollowing out the tax base through this type of deduction reduces revenue in a way which can only be made up by increasing marginal rates. Marginal rates are the most important determinant of the deadweight loss of taxation at the work/leisure frontier
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