A handful of politicians both left and right, recently floated test balloons on eliminating the mortgage interest deduction in exchange for a more generous standard deduction or a lowering of marginal rates. Special interest groups like the National Association of Realtors and the National Association of Home Builders are howling that the mortgage deduction is a pillar of home ownership and the US economy in general. On the contrary, the mortgage deduction is a harmful manipulation of the free market, and its elimination would stabilize tax revenues while preventing further housing bubbles.
Most people cherish their mortgage deductions; after all, their taxes are high enough already. The proposals, from Steve Forbes’s flat tax to Pres. Obama’s Commission on Fiscal Responsibility and Reform are more complex and might actually lower the middle class tax burden. In short, the mortgage deduction would be eliminated in exchange for an overall lower income tax rate. People with modest debt loads relative to their income would see taxes fall, while heavy borrowers might face trouble.
By encouraging borrowing, the mortgage deduction perverts the economy in several ways. First, since Uncle Sam pays about 30% of a homeowner’s interest expense, people are encouraged to borrow as much as they can. Likewise, since mortgages are artificially cheap, people are encouraged to buy as much house as possible. These incentives are the formula for a speculative bubble in housing. Combined with loose credit care of government backed mortgage securities (i.e. Fannie Mae), the 2008 housing collapse was inevitable.
On the government’s side, high marginal rates combined with targeted deductions create a boom and bust cycle for tax receipts. By placing about half of the tax burden on the top 5% of earners, federal revenues are highly variable. California, whose taxes are even more targeted, is the best example of the ruin caused by overly progressive income taxes – whenever the economy dips, California’s tax revenues collapse. Most economists agree that a broad and transparent tax policy is the best way to fund the government, yet higher tax rates combined with targeted deductions remains Washington’s policy.
Finally, higher tax rates combined with targeted deductions encourage Beltway corruption. The availability of targeted tax favors encourages the investment in lobbying and PACs. While NAR and NAHB‘s lobbying hardly compares to AARP’s, they do force their members to donate to politicians in the hope of influencing the tax code. If the individual tax return were completed on a post card as Steve Forbes proposed, there would be little opportunity for Washington’s tax lobbyists and the economic drag they impose.
Would eliminating the mortgage deduction deny home ownership to Americans? Not likely. Already, the housing collapse has limited financing to those who can afford it, the very people who would likely feel little pain from the adjustment. Other home financing tools, like REX Agreements could fill in any gap left by smaller mortgages. Eliminating the mortgage deduction might reduce the number of ‘McMansions’ built for aggressive borrowers, but the trend away from overbuilding started with the collapse. People will still need homes, but they will not be coerced into over buying and over borrowing if the mortgage deduction is eliminated – hardly the end of Realtors and homebuilders.
Of course taking from the many to benefit the few is Washington’s staple business, so the mortgage deduction is probably secure. Still, if the US has any hope of constraining its government and saving its future, proposals like eliminating the mortgage deduction must be on the table. The pleasant surprise that the President’s Commission was willing to confront the culture of corruption that surrounds the tax code is a ray of hope for the US’s future.