The head of a prominent New York business advocacy organization has issued a stark warning, revealing that companies are beginning to consider relocating or shifting jobs due to Mayor Zohran Mamdani’s push for higher taxes.

Steve Fulop, CEO of the Partnership for the City of New York, noted that several corporations are contemplating moves to more cost-effective states. This comes in the wake of news that Apollo Global Management, which manages $900 billion in assets, is planning to establish a second U.S. headquarters in the Sunbelt region.

“Within the past week, several major companies affiliated with the Partnership have indicated they are exploring similar paths as Apollo, looking into options in states like Florida and Texas,” Fulop shared during an appearance on 77 WABC Radio’s “Cats Roundtable” on Sunday.

Fulop emphasized that some of these companies are iconic New York City brands, with a century-long history of being headquartered in the city. “The reality is—they’re planning to leave,” he told host John Catsimatidis.

When approached by The Post, Fulop declined to disclose the names of the companies seriously considering reducing their presence in New York.

“I won’t delve into specific names or speculate on who might be planning to exit,” Fulop explained. “It’s inappropriate to preempt a company’s official announcement, especially when many of these firms have substantial employee bases here in New York.”

“What I can say clearly and unequivocally is that Apollo’s move is not an isolated case,” he went on. “It reflects a broader trend tied directly to competitiveness and business leaders feel that some elected officials are tone deaf to the broader economic environment and have no realistic long term plan to fix the affordability crisis beyond raising costs which will only further the challenges.”

He noted that JP Morgan boss Jamie Dimon last week said New York State’s high-tax climate puts it at a competitive disadvantage.

The Partnership this week is bankrolling a multi-million dollar ad campaign to encourage Gov. Kathy Hochul (D) to stare down Mamdani and hold the line on taxes.

Mamdani, a democratic socialist who became mayor in January after campaigning on a freebie-filled progressive agenda, has floated a menu of tax hikes to generate money for the city that includes increasing income taxes on the wealthy, boosting the estate tax and upping the corporate tax.

All of those options would need approval from the state, but Hochul — who is up for re-election this year — has resisted the push despite mounting pressure from the leftwing of his party.

Mamdani has continued to beat the drum that tax hikes are needed and he even threatened to hike local property taxes 9.5% if the state doesn’t OK his other proposals. He has said the extra income is needed to close a projected $5.4 billion in the city budget due July 1.

But his message was undercut by the City Council, which released a financial analysis last week claiming the city’s massive $127 billion budget could be balanced without tax hikes.

Fulop said his group wants to make sure new taxes “are going to force people out of here.”

“You need to be able to communicate broadly how fragile the economy is and that some of these legislators who are pushing tax increases for the sake of tax increases are really not thinking about the long-term best interests of the city and region,” Fulop said.

He said the support for the ad campaign comes from a portion of annual dues paid by the Partnership’s 300 members, not just members of the group’s executive board.

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The state budget was due April 1, but Hochul and the Democratic-run legislature are still in talks over whether to hike taxes.

During last year’s mayoral campaign, Mamdani proposed raising the top corporate income tax rate for major corporations from 7.25% to 11.5%.

Another Mamdani proposal would increase the city’s corporate tax from 9% to 10.8% on financial sector firms and 8.85% to 10.62% on non-finance sectors. His team projected that such an increase would raise $1.5 billion a year.

The Democrat-run state Assembly and Senate are considering their own corporate tax proposals similar to Mamdani’s.

The Assembly estimates that its own proposal to increase the statewide corporate tax from 7.25% to 9.25% for companies making more than $10 million would generate around $1.9 billion per year in revenue.

The Senate proposes increasing the statewide corporate tax rate from 7.25% to 9% for businesses with $5 million in income.