New York’s incoming socialist mayor faces real fiscal constraints — but also real opportunities. With a strong tax base, modest reforms, and a clear political mandate, Zohran Mamdani has the tools to govern.

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Zohran Mamdani is just weeks away from being inaugurated as New York City’s next mayor. He’ll be the most important American socialist to ever hold executive office. So naturally, many are wondering what he can actually accomplish.
For a Mamdani administration, success would mean at least two things: effectively running the city government while implementing a significant portion of his progressive agenda. Both are tall orders. New York City is notoriously hard to govern, with a sprawling municipal bureaucracy of more than 300,000 city workers serving 8.5 million New Yorkers who are famously harsh judges of their mayors. More challenging is the new mayor’s list of ambitious proposals, which includes free buses, free childcare, a rent freeze, and new affordable housing construction, all paid for by taxes on the rich.
The political hurdles to enacting the Mamdani agenda are widely understood. In Albany, much of Mamdani’s agenda will run up against New York governor Kathy Hochul, a centrist Democrat who has consistently opposed taxing the rich. In Washington, there’s President Donald Trump, who may use the federal government to undermine the new administration by withholding funding, deploying Immigration and Customs Enforcement on the city streets, or finding other ways to make life hard in New York.
Less well understood are the economic and fiscal challenges that will require real policy solutions and problem solving. Making sense of Mamdani’s prospects of success therefore requires a brief tour through the budgets of New York State and New York City. In contrast to federal policy debates, which are shaped by the federal government’s substantial ability to finance deficits and regulate the national economy, state and local policy debates are predominantly budgetary in nature — a limited amount of revenue has to be divided up. States and localities must balance their budgets, partly due to legal requirements and partly because they will face real fiscal crises if tax revenues are inadequate to support their expenditures. While Mamdani has proposed tax measures to pay for his agenda, the viability of those proposals, even if they become the law of the land, depends upon the broader fiscal situation that he is soon to inherit.
Budgets are the center of gravity for state and local policy debates because states and localities provide most of the government services that people use on a daily basis: schools, police, sanitation, transit. Indeed, there are few state policy issues that are not simply budgetary in some important respect. Funding for hospitals, public schools, police, public sector workers, subsidies for affordable housing — most are negotiated in the budget. Today state and local spending across the country is now approaching the scale of the federal government’s own hefty budget. In 2024, the federal government spent $6.8 trillion while states and localities, all together, spent $4 trillion, yet the portion of federal spending financed out of tax revenue was just $4.9 trillion. In other words, total tax-financed spending in the United States is now almost evenly split between the federal government and states and localities.
And contrary to what many on the Left believe, most public expenditures are for desirable forms of social policy — not prisons, cops, and the military. Out of the $6.8 trillion federal budget for fiscal year 2024, $3 trillion (44 percent) was spent just on Medicare, Medicaid, and Social Security. Of New York State’s $134 billion operating funds budget for fiscal year 2025, $67 billion was spent on just public schools and Medicaid, which is jointly funded by states and the federal government. The other major spending areas include payroll for state agency employees and State University of New York workers as well as transportation, mental health, and social services. In the city’s current budget of $116 billion per year, $35 billion is for the Department of Education, and $15.5 billion goes to social services. Even the entire New York Police Department — one of the more costly individual line items — is just 6 percent of the budget at $7 billion per year.
All of this is to say that there are no easy paths to reducing current expenses. And it won’t get any easier: the cost of existing programs will rise each year in order to give public sector workers their bargained-for pay increases. Mayor Mamdani’s first and most significant policy challenge, before pursuing his own agenda of paying for free buses, free childcare, and financing 200,000 new units of affordable housing, will be simply managing these trade-offs and keeping the budget in balance.
Balancing the City Budget
Yet before the new administration even takes office, a chorus of voices will all cry out that the city’s budget is already out of balance. Ever since the fiscal crisis of 1975, New York City and Albany have budgeted through the adoption of a four-year financial plan that forecasts tax receipts and expenditures. The typical practice for both state and city budgeting offices is to modestly underestimate future revenues, leading to forecasts where expenditures grow faster than revenues and the state or city is unable to cover its expenses in future years. In a $116 billion budget, even a small variance in the expected revenue growth rate has a multibillion-dollar effect on the forecast revenue three years from the present. Consequently, the current New York City financial plan estimates that the city’s expenses will exceed its revenues by a total of $17 billion from fiscal year 2027 through 2029. This figure will be deployed to make the case that, far from considering any new programs, Mayor Mamdani will need to start reducing costs.
However, these forecast “gaps” rarely materialize, as research from the Fiscal Policy Institute has shown. Instead, as the budget is negotiated, the forecasts are upgraded with more realistic revenue assessments showing that the city will in fact be able to cover its current expenses. Recent years indicate that, barring a recession, the city’s budget is basically structurally balanced in that revenues and expenses roughly match.
In this respect, the new administration will be in better fiscal shape than critics will claim. But real challenges are waiting in the wings due to the Eric Adams administration’s reluctance to implement existing progressive policy measures. The 2022 law limiting class sizes in New York City will require more than 14,000 new teachers, at a cost of about $1 billion by 2028. Emergency housing vouchers, such as the City Fighting Homelessness and Eviction Prevention Supplement (CityFHEPS), are expected to cost $1 billion more than currently budgeted for, and expanded eligibility could lead to billions of dollars in new annual costs. And a hiring freeze throughout Adams’s tenure has left about 15,000 positions unfilled, generating over $1 billion in annual savings, but at the cost of a demoralized and less effective city workforce.
These fiscal challenges should be taken seriously, but they need not lead to despair. The city has a fundamentally strong tax base that sees steady annual growth in revenue from its high-earning population, partly driven by the still-booming securities industry. While fiscal conservatives are prone to invoke memories of the fiscal crisis, the city’s budget at that time relied on a large share of short-term borrowing to cover its annual expenses that could not be paid for out of current tax revenues; today the city and state both run annual surpluses and can cover their expenses with current revenue.
Federal Cuts Are Coming to the State Budget
This story gets considerably more complicated with the state’s fiscal outlook. Like the city budget, state budget forecasts typically underestimate future revenue, leading to media reports about a $26.8 billion budget gap. Just as with the city budget, these gaps typically disappear outside of recessionary periods.
And yet Albany does face a very real budgetary challenge from the federal reconciliation legislation known as the One Big Beautiful Bill Act (OBBBA). The OBBBA cut federal taxes by $4.5 trillion over the next ten years, paid for through a combination of higher deficits and $1.1 trillion in cuts to Medicaid and the Supplemental Nutrition Assistance Program (SNAP).
These federal funding cuts will flow through to New York, putting serious pressure on the budget. By the state’s estimate, the annual impact on the budget will be about $4.5 billion in lost federal funding per year, primarily driven by the elimination of Obamacare subsidies for lawfully present immigrants. The real costs may be higher by billions of dollars, as the state has found ways of undercounting some of the lost federal funds.
Fortunately for the Mamdani administration, these cuts will not directly impact the $7 billion in annual federal funding that the city receives. However, if the state is unable to manage its own finances, it might absorb some of the impact of these cuts by reducing the $19 billion in annual funding it directs to the city. That is, one of the most important fiscal policy priorities of the new administration will be putting political pressure on the state government to manage OBBBA impacts without implementing spending cuts.
Tax Increases Will Be Necessary
These fiscal challenges are surmountable, for the simple reason that the state and the city are both in a sound economic position to raise taxes given the stock of upper-middle- and high-income earners. But making this move as a matter of policy will mean overcoming the influence of the extremist anti-tax movement, which has successfully pushed decades of aggressive tax cuts for the rich while blowing up the federal deficit.
Even the Democrats’ relatively narrow focus on taxing billionaires speaks to the success of the anti-tax movement. Financing social democratic programs is expensive, and it requires everyone to pay higher taxes. Part of the strategy of the OBBBA was to give large tax cuts to the well-off and the rich, not just the billionaires. This is why the bill is so costly, even to the point of requiring draconian spending cuts — there are simply far more “well-off Americans” than there are billionaires. The top 20 percent of income earners, households earning over $120,000, will receive 70 percent of the benefit of OBBBA tax cuts. The tax cuts are definitely skewed toward the rich, with $1 trillion of the $4.5 trillion in cuts going to the top 1 percent. But our fiscal problems fundamentally come from an unwillingness to accept the necessity of broad-based taxation to finance social programs. The idea that taxing a handful of billionaires is sufficient to achieve social democracy remains a progressive fantasy.
The OBBBA signals a potential paradigm shift in US fiscal policy, in which states will be forced to choose between raising taxes (anathema even to most Democrats) and allowing a dual social crisis of rising hunger and the widespread loss of health insurance. As long as this reality is recognized, the state should be able to recapture a share of the tax cuts given to New York’s richest through tax increases to cover the costs of OBBBA spending cuts. And no, the wealthy won’t just pack up and leave — New York’s top 1 percent move less often than all other income groups. And when they do move, they move to other high-tax states like New Jersey and California.
Paying for the Mamdani Proposals
The new administration’s policy agenda will depend on getting these challenges sorted out. Doing so will require a high degree of fiscal sobriety, paired with the recognition that these challenges are actually manageable — so long as we can collectively overcome our fear of taxes.
If the underlying fiscal situation can be sorted out, there is a realistic path to paying for the Mamdani agenda. Free buses, according to the city’s Independent Budget Office, would cost around $700 million per year, which is almost entirely accounted for by the fare revenue that would no longer be collected. Childcare is probably the most fiscally interesting proposal, with cost estimates ranging from $2.5 billion to $6 billion per year, depending largely on assumptions about uptake rates and worker compensation. The rent freeze does not itself cost money, but the city will need to subsidize building upkeep so that unprofitable rent-stabilized buildings do not fall into disrepair. And the plan to build two hundred thousand units by borrowing $70 billion is likely to be financed by multiple mechanisms including long-term debt and spread out over many years of construction, such that it would likely raise annual debt service costs by around $3 billion per year.
These costs would all be covered by Mamdani’s proposed tax increases, which are designed to raise $10 billion annually. There will inevitably be a conflict between raising taxes to cover the OBBBA impacts on older programs and raising taxes to pay for new programs, but the city and state economies are strong enough to handle the tax burden. The challenge will be twofold: managing trade-offs in the city budget among competing progressive policy priorities, and overcoming the anti-tax sentiment that forecloses social democratic fiscal policy. But if Mamdani can show that a socialist mayor can run the country’s most complex city without fiscal collapse, he’ll do more than deliver free buses — he’ll rewrite the rules of what’s politically and economically possible in America.
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This post was originally published on Jacobin.