This tax-bill fine print could send businesses fleeing from New York or derail Trumps agenda

A bit of late-surfacing fine print might yet throw negotiations over President Donald Trump’s Big Beautiful Bill into chaos, as it poses a dire threat to a key class of businesses in New York and other high-tax states.At issue is a provision that would override state laws that gave various partnerships a break after the 2017 tax reform limited the State and Local Tax deduction to personal income taxes to just $10,000.Many business pay taxes under the personal code, not the corporate one.And where the 2017 reforms gave almost every individual filer a net tax cut, it hit some partnerships harder.As a result, about 40 states passed some complex rules that shielded such businesses from the worst impact; New York’s is called the Pass-Through Entity Tax, or PTET.But if Congress kills the PTET, it’ll mean these NY biz would collectively have to pay $5 billion to $6 billion more in federal taxes, calculates the Empire Center’s E.J.McMahon.And partnerships in New York City might be especially hard-hit, if the new federal rule also removes the deduction for the city’s 4% unincorporated business tax.The net effect would be to boost the company’s tax bill by something like 50% — a hit that will send those that can leave fleeing to Florida, Tennessee or other low-tax states.And that includes many of the most profitable firms, and thus the ones that most bolster the local economyIronically, this move may have been how the tax-writing wonks sought to replace the federal revenue lost by increasing the SALT limit from $10,000 to $30,000 to help out individual filers in high-tax states — but that doesn’t do much for the business filers (nor would even a $60,000 “cap”).Of course, the root problem here is the insane tax rates imposed by Albany, Trenton, Sacramento and so on.

But until those state governments see the light, it’s the individual and business taxpayers who suffer.The partnerships that would get slammed are only now waking up to the peril, and givin...