Cristobal Young, an assistant professor of sociology at Stanford, studied the effects of recent tax increases in New Jersey and California.
“It’s very clear that, over all, modest changes in top tax rates do not affect millionaire migration,” he told me this week. “Neither tax increases nor tax cuts on the rich have affected their migration rates.”
The notion of tax flight “is almost entirely bogus — it’s a myth,” said Jon Shure, director of state fiscal studies at the Center on Budget and Policy Priorities, a nonprofit research group in Washington. “The anecdotal coverage makes it seem like people are leaving in droves because of high taxes. They’re not. There are a lot of low-tax states, and you don’t see millionaires flocking there.”
“People who are very rich, who are retired or who aren’t tied to a particular location, do change their residency at a high rate based on tax differentials.”
Low-tax advocates like Mr. Varney point to Maryland as a prime example of tax flight. Maryland created a millionaire tax bracket in 2008 with a top rate of 6.25 percent. But a year later, the state reported that the number of millionaires filing returns had dropped by a third, and that total tax revenue from the group fell despite the rate increase.
But a study by the Institute on Taxation and Economic Policy, a nonprofit research group in Washington, found that nearly all the decline in millionaires was the result of a drop in incomes largely attributable to the stock market plunge and recession, and not to migration — “down and not out,” as the study put it.
In 2009, just 364 people in the millionaire bracket moved from Maryland or died (the data didn’t distinguish between the two) — about the same percentage who disappeared in 2007, before any tax increase. And in 2009, more than 1,500 taxpayers entered the millionaire rolls, either because they earned more or moved to Maryland that year. That data “directly contravenes the notion that changes in tax policy were discouraging the affluent from working hard and earning substantial sums of money, or driving them out of the state altogether,” the study concluded.
Professor Young said his study looked at every millionaire tax record filed in California over the last 20 years, and “neither tax increases nor tax cuts on the rich have affected their migration rates.” He said that the two major tax overhauls before the recent increase didn’t have any effect on migration rates of millionaires. “Among the very richest, people making more than $2 million, out-migration actually declined slightly after the 2005 millionaire tax,” he said.