The Tax Gains from Moving Across State Lines

Americans have been moving from high-tax states to low-tax states for a long time, but the trend has become more acute since the Covid-19 pandemic hit the world in 2020. The increasing availability of remote work allowed many workers to move elsewhere and keep their jobs, and many companies also chose to relocate or reduce office occupancy. In addition, Americans are increasingly self-sorting according to political preferences. Most coverage of this trend has focused on the rich and how much they have to gain by moving from high-tax to no-income-tax states. Obviously, multimillionaires can keep more of their income if they move from a high-tax jurisdiction like New York City to Palm Beach, where there is no state or local income tax. My new income tax tool shows that not only the rich, but also low- and middle-income Americans, have a lot to gain from moving across state lines. If Democratic-controlled states do not keep tax rates in line with those in Republican-controlled states, the middle class in those states might begin to flee as fast as the rich.

Take a couple earning $120,000 in New York City. The husband has a decent job paying $100,000, and his wife makes $20,000 working part-time. They have two children still in school. That couple does not benefit from itemizing deductions in their federal tax return, so they take the standard deduction and owe $10,040 in federal income taxes. Since they have two minor children, they will receive a $4,400 child tax credit to offset their tax liability.

Since they both have traditional jobs, their employers will owe $9,180 in Social Security and Medicare payroll taxes, while they will pay the same amount from their salary in payroll taxes, out of an effective compensation cost to their employers of $129,180. Since they live in New York State, they owe $5,186 in state income tax and $581 in payroll taxes for paid family and disability leave (both spouses contribute), but they also benefit from an $800 state child tax credit. Finally, since they live in New York City, they will pay an additional $3,727 in city local income tax.

All in all, out of a compensation cost of $129,180, the couple pays $32,693 in income and payroll taxes, or 25.3% of their income, leaving them with a take-home pay of $96,487. This couple faces an effective 36.3% marginal tax rate.

Would this couple be better off if they moved from New York City’s metropolitan area to the Nashville metropolitan area? Imagine the cost of this move is that the wife loses her $20,000 job and thus their income falls. This is a big hit, but they would pay no state and local taxes, and their federal income tax would also be much lower due to the progressive tax structure. Their federal income tax would be, net of the child tax credit, just $3,240, while their payroll tax liability would fall proportionally. Out of a new employer compensation of $107,650, this couple would pay a total of $18,540 in payroll and income taxes, for a take-home pay of $89,110. But every dollar goes much farther in Nashville than in New York City, as housing and everyday goods and services are cheaper—specifically, 14.48% cheaper. While New York City is 12.6% more expensive than the average U.S. territory, Nashville is 3.7% cheaper. Thus a take-home pay of $96,487 in New York City is equivalent to $85,690, while one of $89,110 in Nashville is equivalent to $92,534. In other words, even with a $20,000 lower nominal income, a married couple with two kids can still increase their real take-home pay by nearly 8% by moving across state lines. If they managed to keep their full income, or the wife later found another job, their real income would actually increase to $109,221—over $23,000 in additional real income, a 27% increase.

Now take the case of a middle-income single worker in Los Angeles, making $60,000 per year. His take-home pay would be $47,961. Say he lives in the Los Angeles metropolitan area, so his price-adjusted take-home pay is lower, at $42,219. If he moves to Orlando in Florida, his take-home pay will rise to $50,390, and adjusted for cost of living it would be $49,694. In other words, his after-tax pay rises by $2,429 per year, or over $200 per month, and his price-adjusted after-tax pay rises by $7,475, or over $600 per month—a nearly 18% increase.

While tax and cost-of-living gains are increasing with income, even the lowest-income earners in the United States can see increases of over 10% by moving across state lines, while the richest can see gains of over 30%.