Why the mortgage deduction is a bad idea...it subsidizes leveraged gambling on housing. [View All]

[dkf]

Problem #1: Subsidizing interest payments encourages people to leverage themselves to the hilt to bet on housing markets. The size of the tax benefit is proportional to your debt. The deduction essentially encourages us to make leveraged bets on the swings of the housing market. That leverage means that housing price swings can easily wipe people out. We are currently experiencing the consequences of subsidizing gambles on housing.

Problem #2: The deduction pushes up prices in places where the supply of new homes is constrained, as it is in many coastal markets. Economics 101 teaches us that if we subsidize demand where supply is inelastic then the only effect is to make prices go up. Housing supply is pretty constrained in places like New York City because of land-use restrictions and lack of land. In these places, the deduction doesn’t make housing more affordable. It just transfers money from buyers to sellers, and that makes little sense.

Problem #3: The deduction is wildly regressive. The tax savings for households earning more than $250,000 is 10 times the tax savings for households earning between $40,000 and $75,000 a year, according to recent research by James Poterba and Todd Sinai.

If there ever was a case for small-government egalitarianism, then this is it. Eliminating the home mortgage deduction and replacing it with an across-the-board tax cut would equalize after-tax incomes without a single new government program.

Problem #4: The deduction encourages people to buy larger, single-family detached homes, and that increases carbon emissions and pushes people out of cities. The deduction encourages people to buy more expensive homes, which are generally bigger homes.

http://economix.blogs.nytimes.com/2009/02/24/killing-or-maiming-a-sacred-cow-home-mortgage-deductions/?hp