August 31, 2012. An article by Brian Amaral, Watertown Daily News.

In fliers mailed to Jefferson County residents, state Sen. Patricia A. Ritchie, R-Heuvelton, claims to have saved taxpayers in her three-county district $36 million on their property tax bills.

But experts on the right and left say that the claim — based on her support for the 2011 state law that limits property tax hikes — is unknowable at best and misleading at worst.

Mrs. Ritchie’s office said that the claim in the flier, which was paid for with public funds, is based on a Senate Finance Committee report. The report compared tax levies at school districts in her Senate district from last year, before the cap, to this year, after the cap. The property tax cap limits the amount that schools, counties, towns or villages can raise from homeowners by a percentage determined by things such as growth in the community, pension costs and the health of the economy.

The report assumed that taxes would have gone up about 4.6 percent, which was the statewide average increase over 10 years, without the property tax cap. Then, the report tallied school districts’ levy increases that were below 4.6 percent. Any difference between how much taxes were raised and the assumed 4.6 percent figure was attributed to the fact that the state imposed a property tax cap. So, for example, if a school district raised its property tax levy by 1 percent, the tax cap saved homeowners 3.6 percent on their property tax bills, the report claims.

But that analysis is flawed, said Frank Mauro of the left-leaning Fiscal Policy Institute. Many of the school districts increased their tax levies by less than they were allowed to. Say the cap for a school district is 3 percent. A school district raises its levy by 1 percent. The cap didn’t stop that school district from raising the levy by 3 percent, so how did it stop the school district from raising its levy by 4.6 percent?

The 4.6 percent figure, too, is arbitrary, Mr. Mauro said, considering that each local government faces its own challenges and property taxes vary from region to region.

Unlike Mr. McMahon, Mr. Mauro isn’t sold on the property tax cap. He has argued that it could harm the quality of education.

Perhaps the most glaring flaw in the analysis, the experts said, is the fact that of the $36 million in savings for which the report gives the tax cap credit, $30 million was due to a tax levy cut at one school district. And the savings had nothing to do with the cap. The Oswego City School District cut its levy, or amount to be raised by taxes, by $28 million. That was a 50 percent decrease.

But it wasn’t because of the property tax cap that residents of Oswego County saw those tax cuts; rather, it was because of a renegotiated tax deal with the operator of a nuclear power plant in Oswego County. In lieu of paying property taxes, Constellation Energy paid the school district $24 million in 2012, according the Post-Standard of Syracuse.