Initial investment

The Mamdani Franchise — an independent, non-partisan, open-source playbook. Not affiliated with the Mayor of New York City, the City of New York, or any campaign or party. Status: DRAFT v0.1 (Stage 2 synthesis) · Evidence cut-off: 2026-11-10.

Evidence IDs refer to rows in the evidence register (e.g., EV-012). Every claim cites an ID with URL and date; unverified items are marked [UNVERIFIED]. Figures are City funds unless noted. "Gap" means a projected shortfall in a financial plan; estimators differ, and this chapter shows each one rather than picking one.

Summary disclosure

The administration inherited a budget whose size depended on who was measuring: $4.7B for FY27 in the outgoing administration's November 2025 plan, ~$7B for FY26–27 per IBO, and ~$12B for FY26–27 per the Comptroller and the Mayor. Estimators differed mainly on under-budgeted costs such as rental assistance and shelter (Comptroller, CBC) and on revenue forecasts (IBO). EV-012 EV-017 EV-014 EV-016

The administration chose to put those costs into the budget openly, and the City and State Comptrollers, IBO and CBC credited it for that (EV-031 EV-106 EV-135). It then closed the gap in three moves:

1. The Preliminary Budget ($127B, Feb 17). It used higher tax forecasts and agency savings, and offered a "two-path" choice: State-authorized taxes on high earners and corporations, or a 9.5% property-tax increase plus reserve draws. EV-020 EV-104 EV-151
2. The Executive Budget ($124.7B, May 12). About $4B in State actions replaced both paths: pension re-amortization, class-size flexibility, direct aid, and a new pied-à-terre surcharge. The budget dropped the property-tax increase and the reserve draws. EV-024
3. The Adopted Budget ($125.84B, June 30). A Council deal added $1.14B, including a CityFHEPS settlement, Fair Fares expansion and a partial rebuild of the General Reserve. EV-028 EV-072

What it cost: The Comptroller counted $6.07B in one-time or short-term measures across FY26–27. Adopted-plan out-year gaps are $6.4–8.5B a year from FY28 (OMB, Comptroller, FCB); earlier IBO and Comptroller estimates reached ~$9.5B. The plan assumes raises of 1.25% while the largest union contract (DC 37) expired on Nov 6, 2026. EV-025 EV-029 EV-158 EV-142

Transferability: The disclosure and savings tactics carry over to most cities. The closing package mostly does not: it rested on State legislative action specific to New York (taxing authority, pension law, the school class-size mandate) and on an upward tax re-forecast (EV-152).

At a glance — the FY27 budget through each plan

Key questions — status

How big was the inherited gap? (three honest answers)

Reconciliation note. At the Preliminary Budget release, the Mayor said that after adding ~$4B in revenue above the November forecast and taking standard budget actions, the remaining deficit was in line with the Comptroller's projections (EV-153). Read this way, the "$12B" figure describes the gap before higher tax forecasts were counted, and the ~$5B figures describe it after. Franchisees should take the lesson that the gap's size depends on the method used, so publish the method.

Gap-closing bridge — Preliminary Budget (Feb 2026), OMB's own table

City funds, $ millions. Source: OMB, February 2026 Financial Plan Detail, "Changes Since the November 2025 Plan" (EV-151). Positive = improves the balance.

Analyst arithmetic (not OMB's): the three discretionary items the City later reversed — property tax ($3.70B), Rainy Day Fund ($0.98B) and Retiree Health Benefits Trust ($0.229B) — total $4.91B. Compare the $5.4B remaining two-year gap in the Preliminary release (EV-020); the State package in May replaced these items. "Other" and "net" rows are combined from OMB's line items; see the source table for each line.

What replaced the two paths (Executive Budget, May 12, 2026)

The pension relief is counted both on its own line and inside "State authorizations"; the rows are not additive.

Gap-closing program as tallied by the State Financial Control Board (Adopted plan)

Source: FCB staff report, Aug 6, 2026 (EV-158). The FCB also lists one-time resources: a $3.79B FY26 prepayment, an $896M FY26 surplus rolled forward, $490M of State aid shifted from FY26 to FY27, and a $250M one-time H+H debt-service reimbursement.

Findings by phase

Transition (Nov 4 – Dec 31, 2025)

Summary: The outgoing administration's November 2025 plan raised FY26 spending by ~$2B to $118.2B. It projected a $4.69B FY27 gap and FY28–29 gaps of ~$6.3B. Within days, CBC (Nov 17) and IBO (December) published independent estimates showing larger gaps, which they attributed mainly to under-budgeted entitlements and shelter costs. No separate transition budget review by the incoming team was found. EV-012 EV-152 EV-155 EV-017

Tactics

Reversals / critiques in this phase: None found in this window (a City Journal critique of the spending base appeared Jan 11, 2026; see First 100 days).

Evidence IDs: EV-012 EV-013 EV-017 EV-152 EV-155

First 100 days (Jan 1 – Apr 10, 2026)

Summary: The Comptroller's Jan 16 projection ($2.2B FY26 / $10.4B FY27) and the Mayor's Jan 28 "at least $12B" framing set a crisis baseline. EO 12 (Jan 29) created Chief Savings Officers in every agency. Agencies submitted proposals on Mar 20, identifying more than $1.7B, though monitors called the details thin. The Feb 17 Preliminary Budget balanced FY26–27 on paper: it recognized ~$6.6–7.4B a year in previously under-budgeted agency costs and presented a "two-path" choice between State taxes on high earners and a 9.5% property-tax increase with reserve draws. Moody's moved the City's outlook to negative on Mar 11, with Fitch and Kroll following on Mar 20. On Apr 1 the Council answered with a $6.0B alternative that used no property tax and no reserve draws. EV-014 EV-015 EV-039 EV-041 EV-020 EV-151 EV-023 EV-018

Tactics

Reversals / critiques in this phase:

• The property-tax fallback and both reserve draws were proposed, then withdrawn (EV-024).
• A City Journal article (Jan 11, 2026) argued the spending base itself was the problem: FY26 ~$120.5B by its measure (OMB's November plan: $118.2B), ~57% real growth since the late-1970s low, against ~21% population growth (EV-128).
• City Journal (Manhattan Institute) called the announced savings largely illusory (EV-130).
• CBC's president said the City has a spending problem, not a revenue problem (EV-132).
• The Fiscal Policy Institute agreed the gap was real but favored new revenue (EV-019).
• The Council's Apr 1 counter-plan relied instead on $3.48B in re-estimates, including $860M in unspent salaries from vacant positions, plus $2.02B in efficiencies (EV-018 EV-107).

Evidence IDs: EV-014 EV-015 EV-016 EV-018 EV-019 EV-020 EV-022 EV-023 EV-031 EV-039 EV-041 EV-045 EV-046 EV-104 EV-105 EV-106 EV-107 EV-128 EV-130 EV-132 EV-151 EV-153 EV-154

First budget (FY27: Preliminary Feb → Adopted Jun 2026)

Summary: The State budget, signed May 28 and about two months late, did not raise income or corporate taxes. It did provide an NYC package: pension re-amortization (~$2.3B over FY26–27), class-size mandate flexibility, direct aid, Foundation Aid increases, a pied-à-terre surcharge, and two years of State funding for 2-K seats. The May 12 Executive Budget ($124.7B) assumed that package (enacted May 28) to balance FY26–27 without a property-tax increase or reserve draws. It cut the General Reserve to the $100M minimum and removed the Capital Stabilization Reserve. The Comptroller's June 9 review estimated a small FY26 surplus ($222M) but a $9.13B FY30 gap. The June 30 handshake with Speaker Menin ($125.84B, passed 45–6) added $1.14B, including $175M for a new voucher program ($125M baselined); the administration agreed to drop the CityFHEPS litigation and the Council made vouchers subject to appropriation. It also raised Fair Fares eligibility to 200% of the poverty line, added $350M to the General Reserve, and dropped a proposed 580-officer NYPD increase; the Mayor cited savings found with the Police Commissioner (EV-267). EV-068 EV-069 EV-024 EV-026 EV-156 EV-028 EV-072 EV-168

Tactics

Reversals / critiques in this phase:

• CBC described the Executive Budget as a more honest presentation but balanced largely with one-shots, such as the class-size delay and pension changes (EV-135). At the June deal, CBC's president said the gap was closed mainly with one-shots and cost shifts (EV-110).
• The Comptroller counted $6.07B of temporary measures across FY26–27, including a $1.21B write-down of FY2023 collective-bargaining reserves (EV-025). An earlier Comptroller estimate cited in the press put the one-shots at $2.8B; the two figures appear to cover different scopes (EV-164). At the Executive stage it projected $8.8–9.5B annual gaps for FY28–30, rising to $11B+ after risks (EV-137).
• The Manhattan Institute said the Executive Budget balanced only one year with ~$2.8B in one-time measures, and criticized pension re-amortization as shifting costs to future taxpayers (EV-136 EV-134).
• Conflict to resolve: the critique quoted in Reason describes repayment "into the 2040s." The Comptroller (EV-025) and the Fiscal Policy Institute (EV-161) put final paydown at FY2037 and describe 2044 as the date in the 2025 proposal. Prefer the primary text of the law (EV-160).
• Rating outlook: Moody's, Fitch and Kroll moved to negative outlooks in March (EV-023). No later rating action has been found.

Evidence IDs: EV-021 EV-024 EV-025 EV-026 EV-027 EV-028 EV-064 EV-065 EV-066 EV-067 EV-068 EV-069 EV-071 EV-072 EV-108 EV-110 EV-134 EV-135 EV-136 EV-137 EV-156 EV-157 EV-160 EV-161 EV-162 EV-163 EV-164

Year 1 (Jul – Dec 2026)

Summary: Monitors' post-adoption reviews agreed on the near term and diverged on the out-years.

Sources: EV-029 EV-158.

• Largest risks (FCB): uniformed overtime (~$600M a year) and the 2-K program once State funding ends ($425M a year from FY29). Pension investment returns offset part of this.
• Reserves: no FY26 Rainy Day Fund deposit was made (EV-030).
• Savings round 2: in late July the Mayor ordered a further 2.5% savings round for FY27 and later years; the Comptroller estimated it could yield about $1.5B a year (EV-048).
• Control Board review (Aug 12): both comptrollers credited the end of under-budgeting while warning that recurring spending still outpaces recurring revenue. The board found the City not in fiscal stress (EV-031).

Tactics

Reversals / critiques in this phase: The Manhattan Institute's John Ketcham wrote that the administration should expect fiscal pressure in the January plan (EV-138).

Evidence IDs: EV-029 EV-030 EV-031 EV-048 EV-111 EV-138 EV-158 EV-159

Present (rolling; last updated: 2026-11-10)

Summary: The November 2026 Financial Plan — the first November update prepared by this administration — had not been published as of the cut-off; the OMB publications page was checked on Nov 9, 10 and 11 (EV-032). The 2025 update came out on Nov 17. It is expected to show the results of the July savings round and the first FY28 re-forecast.

The main open cost pressure is labor:

• The DC 37 contract, covering ~90,000 workers and likely to set the pattern for other unions, expired Nov 6, 2026.
• The previous DC 37 agreement gave 16.21% compounded over its term (EV-167), while the financial plan funds raises of 1.25% (EV-142).
• Each additional point of raises costs roughly $550–600M a year (EV-142).
• For comparison, New York State's August 2026 deal with PEF (a state union, not a City contract) gives 3–4.5% a year (EV-165).

Tactics

Reversals / critiques in this phase: None new found at cut-off.

Evidence IDs: EV-032 EV-142 EV-165 EV-167

Risk register entering FY28 (for Item 9)

Franchise notes — what transfers

Open questions & gaps

• November 2026 Financial Plan — pull on release (expected mid/late November); update the "Present" phase and at-a-glance table.
• CBC's written statements on the Preliminary (Feb), savings plan (Mar 25) and Executive (May 12) budgets — cited so far through press mentions and interviews.
• OMB budget letter for the July 2.5% savings round (primary text).
• Pension board adoption — at June 9 the Comptroller reported only BERS had approved the new schedule; confirm NYCERS, TRS, Police and Fire.
• Rating agencies — primary text of the March outlook changes and any later action.

Changelog