# Will Mamdani raise corporate taxes before 2027?

Before Jan 1, 2027

Updated: May 8, 2026

Category: Politics

Tags: Local

HTML: /markets/politics/local/will-mamdani-raise-corporate-taxes-before-2027/

## Short Answer

**Key takeaway.** Both the **model** and the **market** expect Mamdani to raise corporate taxes before 2027, with no compelling evidence of mispricing.

## Key Claims (January 2026)

**- - The 2026 legislative session presents a narrow window for passing the tax plan.** - Historical precedent shows limited success for city-specific corporate tax increases.
- Mayor Mamdani proposes new taxes; Governor Hochul consistently opposes increases.
- Varied NYC fiscal deficit projections may pressure state lawmakers.
- Governor Hochul consistently opposed corporate tax increases during Q2-Q3 2026 negotiations.

### Why This Matters (GEO)

- AI agents extract claims, not arguments.
- Improves citation probability in summaries and answer cards.
- Enables fact stitching across multiple sources.

## Executive Verdict

**Key takeaway.** At 13c, **market** prices higher than the **10.2%** **model**, suggesting overvaluation given Governor Hochul's consistent opposition.

### Who Wins and Why

| Outcome | Market | Model | Why |
| --- | --- | --- | --- |
| Yes | 13.0% | 10.2% | No specific information is provided in the research excerpt to support a corporate tax raise before 2027. |

## Model vs Market

- Model Probability: 10.2% (Yes)
- Market Probability: 13.0% (Yes)
- Yes refers to: Yes
- Edge: -2.8pp
- Expected Return: -21.2%
- R-Score: -0.28
- Total Volume: $55,390.81
- 24h Volume: $8,403.88
- Open Interest: $18,153.52

- Expiration: January 1, 2027

## Market Behavior & Price Dynamics

The prediction market for whether Mamdani will raise corporate taxes before 2027 has shown a distinct downward trend. Opening at a 20.0% probability, the market remained stable for a period before experiencing a significant drop to 13.0% around May 8, 2026. This price, which is the market's current level, also represents its all-time low. The overall price range has been between 13.0% and 24.0%. The initial 20% price appears to have factored in the administration's February 1, 2026 preliminary budget proposal, which seeks corporate tax increases. The subsequent drop to 13% suggests that market participants grew more skeptical about the proposal's chances of being enacted before the deadline, or may believe that other revenue sources, like the proposed personal income tax increases on millionaires, are more likely to be pursued.

The price action is supported by volume patterns that indicate strong market conviction. The sharp drop from 20.0% to 13.0% was accompanied by a notable volume spike, suggesting that the move was driven by a significant influx of trading activity rather than a small number of trades. This reinforces the idea of a decisive shift in sentiment. From a technical perspective, the 13.0% mark has established itself as a key support level, being the lowest price traded. The prior stable price of 20.0% now acts as a resistance level. Overall, the chart indicates a sustained bearish sentiment, with traders pricing in a low and decreasing probability that a corporate tax increase will be signed into law before January 1, 2027, despite the administration's publicly stated goals.

## Contract Snapshot

The market resolves to "Yes" if a law raising the NYC Business or New York State corporate tax rate applicable to New York City becomes binding law before January 1, 2027; otherwise, it resolves to "No." The law's enactment requires the completion of all constitutional and legal requirements, including executive approval where applicable, and merely extending an existing temporary rate does not constitute a rate increase. The market closes by December 31, 2026, at 11:59 pm EST, or earlier if the law is enacted.

## Market Discussion

Traders are primarily discussing the interpretation of the market rules, specifically if a law passed at the city or state level would satisfy the condition of "Mamdani raising corporate taxes." Arguments for a "Yes" outcome often focus on the perceived societal benefits of higher corporate taxes for small businesses and local economies, referencing historical periods with high marginal tax rates as precedent. Conversely, a "No" argument centers on the literal wording, questioning if Mamdani personally has the direct power to enact such a change, despite clarifications that city or state laws applying to NYC would resolve the market to "Yes."

## Market Data

| Contract | Yes Bid | Yes Ask | Last Price | Volume | Open Interest |
| --- | --- | --- | --- | --- | --- |
| Yes | 12% | 13% | 13% | $55,390.81 | $18,153.52 |

## What are the critical dates and procedural hurdles in the 2026 New York State legislative session for passing Mamdani's corporate tax plan?

Legislative Session Convenes | January 7, 2026 [[^]](https://ballotpedia.org/2026_New_York_legislative_session)[[^]](https://www2.nyassembly.gov/leg/calendar/?leg_video=1)[[^]](https://www.nysenate.gov/sites/default/files/pdfs/2026-legislative-session-calendar.pdf) |
Legislative Session Adjourns | June 10, 2026 [[^]](https://ballotpedia.org/2026_New_York_legislative_session)[[^]](https://www2.nyassembly.gov/leg/calendar/?leg_video=1)[[^]](https://www.nysenate.gov/sites/default/files/pdfs/2026-legislative-session-calendar.pdf) |
New York Fiscal Year Start | April 1, 2026 [[^]](https://finance.yahoo.com/economy/policy/articles/ny-dems-pushing-raise-corporate-234300145.html) |

**The 2026 New York State legislative session presents a narrow window**

The 2026 New York State legislative session presents a narrow window. The critical period for passing Mamdani’s corporate tax plan is from January 7, 2026, when the New York State Legislature convenes, until its scheduled adjournment on June 10, 2026 [[^]](https://ballotpedia.org/2026_New_York_legislative_session)[[^]](https://www2.nyassembly.gov/leg/calendar/?leg_video=1)[[^]](https://www.nysenate.gov/sites/default/files/pdfs/2026-legislative-session-calendar.pdf). While the New York fiscal year commences on April 1, 2026, lawmakers have historically missed this budget deadline, sometimes extending funding negotiations, for example, until April 7 [[^]](https://finance.yahoo.com/economy/policy/articles/ny-dems-pushing-raise-corporate-234300145.html)[[^]](https://cbs6albany.com/news/local/new-york-misses-state-budget-deadline-talks-expected-to-stretch-for-weeks)[[^]](https://www.wktv.com/news/local/new-york-budget-deadline-missed-as-lawmakers-extend-funding-through-april-7/article_d2042e27-a074-43bb-b661-fcbc0f8ee828.html). This history suggests that any new tax provisions would need to be negotiated and finalized within an already compressed budget timeline [[^]](https://finance.yahoo.com/economy/policy/articles/ny-dems-pushing-raise-corporate-234300145.html)[[^]](https://cbs6albany.com/news/local/new-york-misses-state-budget-deadline-talks-expected-to-stretch-for-weeks)[[^]](https://www.wktv.com/news/local/new-york-budget-deadline-missed-as-lawmakers-extend-funding-through-april-7/article_d2042e27-a074-43bb-b661-fcbc0f8ee828.html).

Approval from Albany lawmakers and the governor is a major hurdle. Mamdani’s corporate tax proposals, including increases to state corporate taxes, fundamentally depend on securing approval from lawmakers in Albany [[^]](https://www.gothamist.com/news/mamdani-wants-to-change-the-tax-code-heres-what-that-could-look-like)[[^]](https://finance.yahoo.com/economy/policy/articles/ny-dems-pushing-raise-corporate-234300145.html)[[^]](https://www.cityandstateny.com/policy/2025/09/what-are-mamdanis-plans-tax-rich/408352/). A significant procedural hurdle in this process is obtaining this legislative consensus, with the governor's stance identified as a critical factor in budget negotiations [[^]](https://www.gothamist.com/news/mamdani-wants-to-change-the-tax-code-heres-what-that-could-look-like)[[^]](https://finance.yahoo.com/economy/policy/articles/ny-dems-pushing-raise-corporate-234300145.html)[[^]](https://www.cityandstateny.com/policy/2025/09/what-are-mamdanis-plans-tax-rich/408352/). For instance, a 2026 legislative initiative aligned with Mamdani's objectives, which sought to authorize New York City to impose a **25%** 'tax liability surcharge' on corporations, would similarly necessitate both legislative passage and gubernatorial action for its enactment [[^]](https://www.yahoo.com/news/articles/zohran-mamdani-albany-pals-push-234002976.html)[[^]](https://nypost.com/2026/03/01/us-news/mamdanis-albany-pals-push-bill-to-slap-25surcharge-on-nyc-corporations).

## What is the historical precedent for a New York City mayor successfully lobbying Albany for a city-specific corporate tax increase during state budget negotiations?

Successful Corporate Tax Hike Precedent | Not readily apparent for a NYC mayor during state budget negotiations [[^]](https://www.gothamgazette.com/government/1586-the-new-york-state-legislature-how-albany-controls-the-city) |
NYC Fiscal Contribution to State | Disproportionate share of state revenue while receiving less in return [[^]](https://nysfocus.com/2026/02/09/mamdani-nyc-albany-budget)[[^]](https://islg.cuny.edu/resources/fiscal-flow-nyc-albany)[[^]](https://www.nyc.gov/mayors-office/news/2026/04/transcript--mayor-mamdani-and-speaker-menin-urge-albany-to-help-) |
NYC Independent Taxing Power | Limited, with instances of being 'rebuffed' by the state [[^]](https://www.gothamgazette.com/government/1586-the-new-york-state-legislature-how-albany-controls-the-city) |

**Historical precedent shows limited success for city-specific corporate tax increases**

Historical precedent shows limited success for city-specific corporate tax increases. There is no clear historical record of a New York City mayor successfully lobbying Albany for a city-specific corporate tax increase during state budget negotiations [[^]](https://www.gothamgazette.com/government/1586-the-new-york-state-legislature-how-albany-controls-the-city). New York City's independent taxing power is often restricted, requiring mayors to appeal to the state legislature for any changes to local taxes, a process that has sometimes resulted in the city being 'rebuffed' by the state [[^]](https://www.gothamgazette.com/government/1586-the-new-york-state-legislature-how-albany-controls-the-city). Historically, the fiscal relationship between New York City and Albany has been characterized by the city contributing a disproportionate amount of state revenue while receiving less in return [[^]](https://nysfocus.com/2026/02/09/mamdani-nyc-albany-budget)[[^]](https://islg.cuny.edu/resources/fiscal-flow-nyc-albany)[[^]](https://www.nyc.gov/mayors-office/news/2026/04/transcript--mayor-mamdani-and-speaker-menin-urge-albany-to-help-). This imbalance has frequently prompted mayors to advocate for tax increases, including on corporations, as a means to address the city's budget deficits [[^]](https://nysfocus.com/2026/02/09/mamdani-nyc-albany-budget)[[^]](https://groundworkcollaborative.org/work/closing-the-gap-why-new-york-city-needs-a-millionaires-tax/)[[^]](https://www.cityandstateny.com/policy/2026/02/back-albany-mamdani-says-tax-rich/411447/).

Current Mayor Mamdani proposes city-specific corporate tax hikes. New York City Mayor Zohran Mamdani is currently proposing city-specific corporate tax increases for the upcoming 2026 state budget discussions [[^]](https://nysfocus.com/2026/03/06/mamdani-corporate-tax-albany)[[^]](https://www.cityandstateny.com/policy/2026/02/back-albany-mamdani-says-tax-rich/411447/). His administration believes that a focused approach might prove more politically viable, even while acknowledging that securing such an increase will be a challenging endeavor [[^]](https://nysfocus.com/2026/03/06/mamdani-corporate-tax-albany)[[^]](https://www.cityandstateny.com/policy/2026/02/back-albany-mamdani-says-tax-rich/411447/).

## How do Mayor Mamdani's and Governor Hochul's proposed solutions for closing New York City's FY2027 budget gap differ?

Mamdani's Income Tax Target | Individuals earning over $1 million [[^]](https://www.nyc.gov/mayors-office/news/2026/02/mayor-mamdani-releases-balanced-fiscal-year-2027-preliminary-bud) |
Mamdani's Proposed Property Tax Increase | 9.5% [[^]](https://www.nyc.gov/mayors-office/news/2026/02/mayor-mamdani-releases-balanced-fiscal-year-2027-preliminary-bud) |
Hochul's State Allocation to NYC | $1.5 billion over two years [[^]](https://www.timesunion.com/state/article/hochul-earmarks-1-5b-help-mamdani-close-new-york-21356746.php) |

**Mayor Mamdani proposes new taxes and property rate hikes for budget stability**

Mayor Mamdani proposes new taxes and property rate hikes for budget stability.
Mayor Mamdani’s preliminary budget for Fiscal Year 2027 primarily seeks to close New York City’s budget gap by focusing on generating new recurring revenue. His plan includes implementing higher personal income taxes for individuals earning over **$1** million and increasing taxes on the most profitable corporations [[^]](https://www.nyc.gov/mayors-office/news/2026/02/mayor-mamdani-releases-balanced-fiscal-year-2027-preliminary-bud). Additionally, the budget assumes a **9.5%** property tax rate increase, with provisions to draw from reserves if the necessary new revenue authority is not secured [[^]](https://www.nyc.gov/mayors-office/news/2026/02/mayor-mamdani-releases-balanced-fiscal-year-2027-preliminary-bud).

Conversely, Governor Hochul opposes new income taxes, offering state aid instead.
Governor Hochul’s executive-budget materials for FY2027 explicitly state her opposition to "no income tax increases on New Yorkers" [[^]](https://www.governor.ny.gov/news/remarks-prepared-governor-hochul-unveils-highlights-fiscal-year-2027-executive-budget-stronger). Her strategy emphasizes state support for New York City, exemplified by a state allocation of **$1.5** billion over two years to help address its budget shortfall [[^]](https://www.timesunion.com/state/article/hochul-earmarks-1-5b-help-mamdani-close-new-york-21356746.php). Governor Hochul has also demonstrated unwillingness to approve city-proposed tax adjustments, specifically rejecting a pass-through entity tax (PTET) change, which was estimated to generate approximately **$1** billion in revenue for New York City [[^]](https://www.thecity.nyc/2026/04/28/kathy-hochul-zohran-mamdani-ptet-tax-budget/). This stance suggests she would likely resist similar corporate-tax modifications that require state action [[^]](https://www.governor.ny.gov/news/remarks-prepared-governor-hochul-unveils-highlights-fiscal-year-2027-executive-budget-stronger)[[^]](https://www.thecity.nyc/2026/04/28/kathy-hochul-zohran-mamdani-ptet-tax-budget/).

## What level of projected fiscal deficit for NYC in FY2027 would likely create sufficient pressure for state lawmakers to approve a tax hike before year-end 2026?

Restated FY2027 Fiscal Gap | $10.405B (NYC Comptroller Levine) [[^]](https://comptroller.nyc.gov/reports/fy-2027-budget-preview/)[[^]](https://comptroller.nyc.gov/reports/comments-on-new-york-citys-preliminary-budget-for-fiscal-year-2027-and-financial-plan-for-fiscal-years-2026-2030) |
Re-estimated FY2027 Fiscal Gap | $2.853B (2.3% of total revenues, NYC Comptroller Levine) [[^]](https://comptroller.nyc.gov/reports/comments-on-new-york-citys-preliminary-budget-for-fiscal-year-2027-and-financial-plan-for-fiscal-years-2026-2030) |
Revenue from Proposed FY2027 Property Tax Increase | $3.7B (Mayor Mamdani's preliminary budget) [[^]](https://www.nyc.gov/mayors-office/news/2026/02/mayor-mamdani-releases-balanced-fiscal-year-2027-preliminary-bud) |

**New York City faces varied fiscal deficit projections for FY2027**

New York City faces varied fiscal deficit projections for FY2027. NYC Comptroller Levine reported a restated gap of **$10.405** billion and a re-estimated gap of **$2.853** billion, which represents **2.3%** of total revenues [[^]](https://comptroller.nyc.gov/reports/fy-2027-budget-preview/)[[^]](https://comptroller.nyc.gov/reports/comments-on-new-york-citys-preliminary-budget-for-fiscal-year-2027-and-financial-plan-for-fiscal-years-2026-2030). The Comptroller also noted that without the proposed property tax increase, the FY2027 gaps would increase to **$6.53** billion [[^]](https://comptroller.nyc.gov/reports/comments-on-new-york-citys-preliminary-budget-for-fiscal-year-2027-and-financial-plan-for-fiscal-years-2026-2030).

Mayor Mamdani's preliminary budget relies on state-approved revenue. The Mayor's February 2026 preliminary budget for FY2027 assumed a **9.5%** property tax rate increase, projected to generate **$3.7** billion, and utilized reserve funds [[^]](https://www.nyc.gov/mayors-office/news/2026/02/mayor-mamdani-releases-balanced-fiscal-year-2027-preliminary-bud). However, this budget explicitly indicated that any remaining gaps would necessitate new recurring revenue authority. State Comptroller DiNapoli, in March 2026, characterized the preliminary budget as revealing an emerging structural gap, observing that the city's plan would depend on a politically sought, state-approved revenue strategy, even with expected reserve drawdowns [[^]](https://www.osc.ny.gov/press/releases/2026/03/dinapoli-nyc-budget-increases-transparency-reveals-structural-gaps).

No specific deficit level guarantees state tax hike approval. Both state legislative and gubernatorial approval are considered essential for a tax hike to proceed, according to the prediction **market** [[^]](https://kalshi.com/markets/kxnyccorporatetax/will-mamdani-raise-corporate-taxes-before-2027/kxnyccorporatetax-27jan01)[[^]](https://www.solflare.com/prediction/politics/event/KXNYCCORPORATETAX-27JAN01/)[[^]](https://www.nyc.gov/mayors-office/news/2026/02/mayor-mamdani-releases-balanced-fiscal-year-2027-preliminary-bud)[[^]](https://www.osc.ny.gov/press/releases/2026/03/dinapoli-nyc-budget-increases-transparency-reveals-structural-gaps). While the city's budget strategy, outlined by Mayor Mamdani and Comptroller DiNapoli, highlights a reliance on state-approved revenue to address these structural deficits, the available information does not specify a particular FY2027 fiscal deficit level that would likely compel state lawmakers to approve such a tax increase before the end of 2026 [[^]](https://www.osc.ny.gov/press/releases/2026/03/dinapoli-nyc-budget-increases-transparency-reveals-structural-gaps)[[^]](https://www.nyc.gov/mayors-office/news/2026/02/mayor-mamdani-releases-balanced-fiscal-year-2027-preliminary-bud).

## What evidence from Q2-Q3 2026 budget negotiations indicates whether Governor Hochul's opposition to corporate tax increases is softening?

Hochul's Stance on Corporate Taxes | Opposition did not broadly soften during Q2-Q3 2026 budget negotiations [[^]](https://www.syracuse.com/politics/cny/2026/05/hochul-reaches-budget-deal-with-new-york-lawmakers-ending-5-week-deadlock.html)[[^]](https://www.timesunion.com/state/article/hochul-new-york-lawmakers-reach-state-budget-deal-22246583.php)[[^]](https://www.cityandstateny.com/policy/2026/03/nyc-council-members-hochul-tax-rich-corporations/412331/) |
Statewide Corporate Taxes Outcome | Ensured budget would not raise statewide corporate taxes [[^]](https://www.syracuse.com/politics/cny/2026/05/hochul-reaches-budget-deal-with-new-york-lawmakers-ending-5-week-deadlock.html)[[^]](https://www.timesunion.com/state/article/hochul-new-york-lawmakers-reach-state-budget-deal-22246583.php)[[^]](https://www.cityandstateny.com/policy/2026/03/nyc-council-members-hochul-tax-rich-corporations/412331/) |
Alternative Concession | Agreement to NYC surcharge on second homes valued over $5 million (May 7 deal) [[^]](https://www.syracuse.com/politics/cny/2026/05/hochul-reaches-budget-deal-with-new-york-lawmakers-ending-5-week-deadlock.html)[[^]](https://www.timesunion.com/state/article/hochul-new-york-lawmakers-reach-state-budget-deal-22246583.php)[[^]](https://gothamist.com/news/ny-gov-hochul-top-lawmakers-strike-deal-on-268b-state-budget) |

**During the Q2-Q3 2026 FY2027 state budget negotiations, Governor Hochul consistently opposed corporate tax increases**

During the Q2-Q3 2026 FY2027 state budget negotiations, Governor Hochul consistently opposed corporate tax increases. Her opposition to corporate tax increases did not broadly soften [[^]](https://www.syracuse.com/politics/cny/2026/05/hochul-reaches-budget-deal-with-new-york-lawmakers-ending-5-week-deadlock.html)[[^]](https://www.timesunion.com/state/article/hochul-new-york-lawmakers-reach-state-budget-deal-22246583.php)[[^]](https://www.cityandstateny.com/policy/2026/03/nyc-council-members-hochul-tax-rich-corporations/412331/), and she was explicitly credited with ensuring the state budget would not raise statewide corporate taxes [[^]](https://www.syracuse.com/politics/cny/2026/05/hochul-reaches-budget-deal-with-new-york-lawmakers-ending-5-week-deadlock.html)[[^]](https://www.timesunion.com/state/article/hochul-new-york-lawmakers-reach-state-budget-deal-22246583.php)[[^]](https://www.cityandstateny.com/policy/2026/03/nyc-council-members-hochul-tax-rich-corporations/412331/). This stance was maintained despite pushes from figures like Assemblymember Mamdani and their supporters for steeper income and corporate tax hikes [[^]](https://www.syracuse.com/politics/cny/2026/05/hochul-reaches-budget-deal-with-new-york-lawmakers-ending-5-week-deadlock.html)[[^]](https://www.timesunion.com/state/article/hochul-new-york-lawmakers-reach-state-budget-deal-22246583.php)[[^]](https://www.cityandstateny.com/policy/2026/03/nyc-council-members-hochul-tax-rich-corporations/412331/).

Negotiations led to alternative revenue sources, not corporate tax hikes. Hochul specifically opposed Mamdani's efforts to increase New York City corporate tax rates and implement steeper corporate tax hikes [[^]](https://www.timesunion.com/state/article/hochul-new-york-lawmakers-reach-state-budget-deal-22246583.php)[[^]](https://gothamist.com/news/ny-gov-hochul-top-lawmakers-strike-deal-on-268b-state-budget)[[^]](https://www.cityandstateny.com/policy/2026/03/nyc-council-members-hochul-tax-rich-corporations/412331/). As a negotiation concession, an alternative was agreed upon in the May 7 deal: a New York City surcharge on second homes valued over **$5** million [[^]](https://www.syracuse.com/politics/cny/2026/05/hochul-reaches-budget-deal-with-new-york-lawmakers-ending-5-week-deadlock.html)[[^]](https://www.timesunion.com/state/article/hochul-new-york-lawmakers-reach-state-budget-deal-22246583.php)[[^]](https://gothamist.com/news/ny-gov-hochul-top-lawmakers-strike-deal-on-268b-state-budget). This resolution demonstrated Hochul's preference for opting for alternatives and paring back "ambition" rather than endorsing higher corporate taxes, reinforcing her consistent stance against such increases [[^]](https://www.syracuse.com/politics/cny/2026/05/hochul-reaches-budget-deal-with-new-york-lawmakers-ending-5-week-deadlock.html)[[^]](https://www.timesunion.com/state/article/hochul-new-york-lawmakers-reach-state-budget-deal-22246583.php)[[^]](https://www.cityandstateny.com/policy/2026/03/nyc-council-members-hochul-tax-rich-corporations/412331/).

## What Could Change the Odds

**Mayor Mamdani, who assumed office on January 1, 2026, has centered his platform on increasing taxes for corporations and high-income earners to address the city's budget deficit [[^]](https://en.wikipedia.org/wiki/Zohran_Mamdani)[[^]](https://ballotpedia.org/Zohran_Mamdani)[[^]](https://en.wikipedia.org/wiki/Political_positions_of_Zohran_Mamdani)[[^]](https://nysfocus.com/2026/03/06/mamdani-corporate-tax-albany)[[^]](https://www.aljazeera.com/news/2026/1/1/zohran-mamdani-sworn-in-as-new-york-city-mayor)[[^]](https://en.prolewiki.org/wiki/Zohran_Mamdani)[[^]](https://www.pbs.org/newshour/politics/democrat-zohran-mamdani-wins-new-york-city-mayors-race).** During his mayoral campaign, he advocated for raising New York State's highest corporate income tax rate from **7.25%** to **11.5%** [[^]](https://www.cato.org/blog/mamdanis-wishful-thinking-tax-revenues)[[^]](https://www.cityandstateny.com/policy/2025/09/what-are-mamdanis-plans-tax-rich/408352/)[[^]](https://www.focusresourcesinc.com/how-zohran-mamdanis-tax-hikes-impact-businesses-in-nyc-and-beyond/)[[^]](https://www.empirecenter.org/publications/parsing-the-impact-of-mamdanis-tax-hike-plans/)[[^]](https://www.cityandstateny.com/policy/2025/12/what-will-be-biggest-2026-policy-fights-albany/410331/).

**In March 2026, his administration presented a revised plan for New York City, proposing narrower corporate tax increases: 1.8 percentage points for finance firms, 1.77 points for other corporations, and 0.4 points for large unincorporated businesses [[^]](https://nysfocus.com/2026/03/06/mamdani-corporate-tax-albany).** This adjusted proposal represents a smaller increase compared to his initial statewide corporate tax hike ambition [[^]](https://nysfocus.com/2026/03/06/mamdani-corporate-tax-albany). Additionally, a proposed annual surcharge on luxury second homes in New York City valued above **$5** million is projected to generate **$500** million annually [[^]](https://www.ctvnews.ca/business/real-estate/article/mamdanis-tax-the-rich-slogan-is-just-as-hateful-as-racial-slurs-new-york-real-estate-titan-says/)[[^]](https://www.nyc.gov/mayors-office/news/2026/04/mayor-mamdani--governor-hochul-announce-state-s-first-pied-a-ter)[[^]](https://manhattan.institute/article/mamdanis-participation-trophy-politics-are-gutting-new-york). Another change aims to generate nearly **$1** billion in city revenue and would affect businesses structured as pass-through entities [[^]](https://www.city-journal.org/article/new-york-pass-through-entity-tax-mamdani)[[^]](https://council.nyc.gov/press/2026/04/28/3114/).

**While some of Mamdani's broader tax increase proposals, particularly those requiring state approval, have faced challenges, Governor Hochul has shown openness to corporate tax hikes [[^]](https://www.cityandstateny.com/policy/2025/09/what-are-mamdanis-plans-tax-rich/408352/)[[^]](https://nysfocus.com/2026/03/06/mamdani-corporate-tax-albany).** The state Legislature has also historically supported increasing taxes on wealthy New Yorkers and has included corporate tax rate increases in their budget proposals [[^]](https://www.cityandstateny.com/policy/2025/09/what-are-mamdanis-plans-tax-rich/408352/)[[^]](https://www.cityandstateny.com/policy/2025/12/what-will-be-biggest-2026-policy-fights-albany/410331/).

## Key Dates & Catalysts

- **Expiration:** January 08, 2027
- **Closes:** January 01, 2027

## Decision-Flipping Events

- Mayor Mamdani, who assumed office on January 1, 2026, has centered his platform on increasing taxes for corporations and high-income earners to address the city's budget deficit [^] [^] [^] [^] [^] [^] [^] .
- During his mayoral campaign, he advocated for raising New York State's highest corporate income tax rate from **7.25%** to **11.5%** [^] [^] [^] [^] [^] .
- In March 2026, his administration presented a revised plan for New York City, proposing narrower corporate tax increases: 1.8 percentage points for finance firms, 1.77 points for other corporations, and 0.4 points for large unincorporated businesses [^] .
- This adjusted proposal represents a smaller increase compared to his initial statewide corporate tax hike ambition [^] .

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