24% — Will a law raising the NYC Business or New York State corporate tax rate become law in New York City before Jan 1, 2028
Kalshi 24% · 4 contracts · $13 volume · medium confidence
Updated 2026-08-10 04:41:10 UTC

Why this matters:
This represents the market's assessment that there is a roughly 1-in-4 chance New York will raise its corporate tax rate by early 2028. The relatively low probability reflects structural barriers to such legislation: New York State requires gubernatorial approval, and recent administrations have prioritized business-friendly policies and economic competitiveness. However, the probability rises to 31% by 2029 and 36% by 2030, suggesting markets see increasing pressure for tax increases over time. Key drivers include state budget deficits, calls from progressive legislators for revenue increases, and shifting political dynamics. The most significant near-term catalyst would be the 2026 gubernatorial election results and subsequent budgeting cycles, which typically occur in early 2027 and would establish the administration's fiscal priorities for the remainder of the forecast period.

Key factors:
- Current New York governor's publicly stated position on corporate taxation and track record on tax policy changes
- State budget projections and structural deficits for fiscal years 2027-2028, which typically drive revenue discussions
- Composition of New York State legislature after the 2026 midterm elections and any shifts in progressive caucus strength
- Historical frequency of significant tax rate changes in New York and typical legislative timeline from proposal to passage
- Economic conditions and business climate messaging from major employers and industry groups operating in the state

Contracts:
- Will Mamdani raise corporate taxes before 2027?: Before 2027 — 5¢ Kalshi $13 (weight 100%)
- Will a law raising the NYC Business or New York State corporate tax rate become law in New York City before Jan 1, 2029?: Before 2029 — 33¢ Kalshi $0 (weight 0%)
- Will a law raising the NYC Business or New York State corporate tax rate become law in New York City before Jan 1, 2028?: Before 2028 — 22¢ Kalshi $0 (weight 0%)
- Will a law raising the NYC Business or New York State corporate tax rate become law in New York City before Jan 1, 2030?: Before 2030 — 37¢ Kalshi $0 (weight 0%)

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## Methodology

SimpleFunctions aggregates live YES-side prices from Kalshi and Polymarket contracts bound to this question. For binary topics the headline is the liquidity-weighted mid-price (weight = log(1 + 24h volume) × freshness, where freshness is 1.0 if updated <24h, 0.7 if <7d, 0.4 otherwise). For multi-outcome (winner-take-all) topics the headline is the current leader's price — disjoint outcomes are never arithmetically averaged. Snapshots refresh every 5 minutes during market hours.

## SF Signal

- SF Index, regime, and 30d Brier calibration are computed separately and surfaced at https://simplefunctions.dev/admin/calibration.
- No SimpleFunctions index / regime / calibration signal is bound to this topic yet — the headline above is market-derived only.

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*Last verified: 2026-08-10T04:20:49.160Z*

By SimpleFunctions — https://simplefunctions.dev/

Cite as: "24% per prediction markets (SimpleFunctions, August 2026)"
Canonical: https://simplefunctions.dev/answer/nyccorporatetax
Full data: https://simplefunctions.dev/api/public/query?q=Will%20a%20law%20raising%20the%20NYC%20Business%20or%20New%20York%20State%20corporate%20tax%20rate%20become%20law%20in%20New%20York%20City%20before%20Jan%201%2C%202028
Provider: SimpleFunctions — https://simplefunctions.dev