MercatorNet: Gay marriage an economic boost?
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Gay marriage an economic boost?

An American think-tank claims that same-sex marriage is a windfall for local economies. This is based on badly flawed assumptions, says an economist.
Jennifer Roback Morse | 29 May 2013

A recent report claims that "marriage equality" will provide an economic boost to Illinois: US$54- $103 million in new spending, and $8.5 million in new tax revenues. This study comes at an opportune time for the gay lobby in Illinois. Their marriage bill, SB-10, is not exactly sailing through the House. Chicago legislators representing heavily ethnic minority and religiously conservative districts have been reluctant to endorse the redefinition of marriage. Perhaps the gay lobby hopes this extra tax money might motivate wavering legislators to support this bill.

The people and legislators of Illinois should not count on extra revenue as a benefit from redefining marriage. These forecasts are based on an elementary economic error as well as highly dubious forecasts. That is why the "Gay Marriage Economic Miracle!!!" predictions have not worked out so well in the past.

The UCLA Law School-based Williams Institute has made numerous such predictions over the years, which are posted on their website under, "Economic Impact Reports." One can find recent reports for Delaware, Minnesota, Rhode Island, and even Australia. (The Institute just happens to produce reports in locations in the throes of electoral battles over the definition of marriage.) Looking at the states which have redefined marriage, we can compare the predictions with the actual outcomes. The older breathless predictions of economic manna from heaven are vast overstatements of the actual outcome of redefining marriage. These studies are not worth the paper they are printed on. Or even the electrons that were rearranged to post them on-line.

Consider Illinois, the immediate case at hand. The Williams Institute predicts that allowing same sex couples to marry in Illinois will generate $54- $103 million in new spending, and $8.5 million in new tax revenues. The Williams Institute's claims are based on calculations of the amount of money same-sex couples might spend on wedding celebrations. The state of Illinois can collect sales taxes on these wedding expenditures.

The Williams Institute has produced similar studies for many states. Their detailed calculations give the illusion of precision. But if the premises are flawed, the answers will be too.

And the premises are indeed flawed. The same-sex couples of Illinois would have spent that money on other things: vacations, theater tickets, home decorating, pets, cars, doctor bills. Every dollar spent on weddings is a dollar taken away from some other industry!!

This is a basic economic error. It is the same error that has led some economic mandarins to think we can make ourselves richer by issuing debt to ourselves. We can't spend our way into prosperity at the macro-level, because the money the government spends has to be taken from some other part of the economy. That part of the private sector then has less money to spend, cancelling out the supposed gain from the government spending.

The only possible net benefit to Illinois would be wedding tourism, that is, people coming in from other states to get married. But same sex couples who can't get married in their home states don't have to come to Illinois. They could go to New York or New Hampshire or even Iowa.

Speaking of Iowa, the Williams Institute did one of these "Gay Marriage Boosts that Economy " studies for Iowa back in 2008. They predicted increased economic activity from same-sex couples, both in and out of state, of about $160 million in the first three years or about $47.77 million per year. This added spending would supposedly generate $8 million in sales tax revenue for the first three years or about $2.7 million in tax revenue in the first year.

They did a later study of Iowa in 2011, touting the great economic windfall from same sex weddings. Their calculated first-year revenue from the weddings and wedding tourism was a paltry $12-$13 million, about a quarter of what they so confidently predicted a mere three years earlier. And the corresponding sales tax revenue proved to be less than $1 million, about a third of their prediction.

How did they arrive at these numbers? Was there an astonishing spike in economic activity in Iowa? Was there a surprising new flood of new tax revenues to the Iowa Treasury that needed to be explained?

No. The Williams Institute simply attributed some of the state's economic activity and tax revenue to same-sex weddings. They multiplied the number of same-sex couples who married by an educated guess of how much money they spent.

That's it.

There is no reason to believe that a single dime of this money actually represents new spending due to same-sex wedding ceremonies.

There you have it: The Gay Weddings Economic Miracle is based on an elementary economic error, and a completely overblown forecast.

In addition, the gross but unacknowledged discrepancy between the inflated prediction of 2008 and the ecstatic report of success in 2011 cries out for explanation.

That explanation is simple: the Williams Institute seriously over-estimated the number of same-sex couples who would marry. They estimated that half the state's same-sex couples would get married over the first three years. In their study of Illinois, they make the further prediction that 64 percent of them would get married in the first year.

On that analysis, 1,867 same-sex couples should have gotten married in the first year in Iowa, over twice the 866 couples that actually did. The Williams Institute does not even admit this faulty prediction, much less offer an explanation for it.

Redefining marriage is not going provide an economic gain to the Illinois state treasury. This report from the Williams Institute offers no new reason to remove the gender requirement from marriage. If the African-American Democrats from Chicago have not been convinced to redefine marriage, this report should not do anything to change their minds.

Jennifer Roback Morse, PhD is the Founder and President of the Ruth Institute, which will hold its First-Ever Gala Dinner and Live Auction in San Diego on June 2. She taught economics at Yale and George Mason Universities for 15 years, after doing a post-doctoral year at the economics department at the University of Chicago. Dr. Morse testified against SB 10 in Springfield IL in February 2013.

Notes on the calculations

Both the Iowa and the Illinois studies predict that half the existing same-sex couples will marry within the first three years. Only in the Illinois study do they make the more detailed prediction of how those couples will be spread out over the three years. They predict 64 percent of the Illinois couples who eventually marry would marry in the first year, 21 percent in the second year, and 15 percent in the third year. They made no such breakdown in their earlier analysis of Iowa.

I computed the 1,867 number in the text as follows. The 2008 Iowa study reported 5,833 same sex couples in Iowa. One half of this number is 2,917, which is their prediction of the number of same sex couples who would marry in Iowa over the first three years. If 64 percent of them married in the first year, as they predict would happen in Illinois, 1,867 same sex couples should have married in the first year. 

MORE ON THESE TOPICS | economics, same-sex marriage
This article is published by Jennifer Roback Morse and MercatorNet.com under a Creative Commons licence. You may republish it or translate it free of charge with attribution for non-commercial purposes following these guidelines. If you teach at a university we ask that your department make a donation. Commercial media must contact us for permission and fees. Some articles on this site are published under different terms.

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