Cost Segregation Study in New York
New York investors face a three-layer tax structure that almost no other state matches: state tax up to 10.9%, New York City resident tax up to 3.876%, and for unincorporated businesses operating in the city, the 4% Unincorporated Business Tax. Each layer has its own depreciation rules, and they do not agree with each other.
That complexity is precisely why New York rewards planning. The state offers one of the best-designed pass-through entity taxes in the country, plus a separate city-level PTET, and the two together can recover a substantial federal deduction that the SALT cap would otherwise deny. The cost segregation piece works, but the state addback has to be modeled rather than assumed.
How New York Income Tax Interacts With Federal Strategy
New York's individual income tax is graduated, topping out at 10.9% on taxable income above $25 million. The brackets below that reach 9.65% at $2 million and 10.30% at $5 million, which is where most successful real estate investors and business owners actually land.
New York City residents add a city income tax reaching 3.876%. A New York City resident at the top of both schedules is paying roughly 14.8% in combined state and local income tax on ordinary income, on top of the federal rate. New York, like California, applies no preferential rate to long-term capital gains.
The interaction with cost segregation is direct. Every dollar of federal bonus depreciation you claim is added back for New York purposes, and at a combined rate near 14.8% for a city resident, that addback is expensive in the placed-in-service year. The federal deduction is still worth taking in nearly every case, but the year-one cash flow model has to include the state and city cost.
New York Pass-Through Entity Tax
New York's PTET is one of the more valuable state workarounds available. Eligible partnerships and S corporations elect annually, and the election deadline is March 15 of the tax year itself. This is the trap that catches people. The New York election is not made when you file. It is made during the year, and it must be renewed every year even if you elected in prior years.
The PTET is computed on a graduated schedule that tracks the individual brackets: 6.85% up to $2 million of PTE taxable income, 9.65% from $2 million to $5 million, 10.30% from $5 million to $25 million, and 10.90% above $25 million. Owners receive a refundable New York credit for their share of the tax paid.
New York City operates a separate PTET for entities with New York City resident partners and shareholders. It is a distinct election with its own mechanics and it sits on top of the state PTET rather than replacing it. Entities with city-resident owners that elect only the state PTET are leaving the city layer of the deduction unclaimed.
Quarterly estimated payments are required at the entity level. Only an authorized person can make the election, which in practice means the election frequently fails because the person with portal access was not the person who decided to elect.
New York Depreciation Conformity
New York does not allow the federal special depreciation deduction under IRC Sec. 168(k) for property placed in service after May 31, 2003, with narrow exceptions for qualified New York Liberty Zone property and Resurgence Zone property.
Instead, New York requires depreciation to be recomputed under IRC Sec. 167 as that section would have applied if the property had been acquired on September 10, 2001. Individuals report the adjustment on Form IT-398, New York State Depreciation Schedule for IRC Section 168(k) Property. Corporations use the equivalent Article 9-A adjustment.
New York City's Unincorporated Business Tax and General Corporation Tax decouple on the same basis, with their own forms in the NYC-399 series. An unincorporated business operating in the city therefore maintains three depreciation calculations: federal, New York State, and New York City.
Cost Segregation Considerations Specific to New York
Three New York-specific points drive the analysis.
First, the reclassification survives the decoupling. New York disallows the bonus, not the shorter recovery period. Five-year property identified in a cost segregation study is still recovered over five years for New York purposes, just under MACRS without the immediate write-off. On a New York property with heavy interior finish, the state benefit of the study over the holding period is meaningful even though the year-one benefit is federal only.
Second, New York City's building stock skews toward large multifamily and mixed-use property with substantial specialty electrical, plumbing, and elevator infrastructure. These are the property types where engineering-based studies produce the highest reclassification percentages, frequently well above the 20% to 25% typical of single-family rentals. The higher the reclassification, the more the state addback matters, and the more the three-schedule bookkeeping matters.
Third, exit planning. Because New York basis was never reduced by bonus depreciation, New York gain on sale is lower than federal gain, sometimes substantially. New York taxes that gain at ordinary rates with no capital gain preference. Non-residents selling New York real property are also subject to the estimated tax payment requirement under Form IT-2663, which is due at closing and is computed on the gain. Getting the New York basis right is what keeps that closing-day payment from being overstated.
For investors who also run an operating business, the PTET and the cost segregation strategy should be planned in the same conversation. A large depreciation loss reduces PTE taxable income, which reduces the PTET base, which reduces the entity-level deduction you were electing in order to capture. Stacking both in the same year without modeling them together frequently wastes part of one or the other.
Working With AE Tax Advisors in New York
AE Tax Advisors works with real estate investors, business owners, and high-income professionals across New York and all fifty states. We are a licensed CPA and IRS Enrolled Agent practice based in Billings, Montana, and we handle the engineering-based cost segregation study, the New York conformity adjustments, the entity structuring, and the return preparation as one engagement rather than three vendors who do not talk to each other.
That matters more in New York than it does in a state with simple conformity. A cost segregation provider who delivers a federal-only report leaves you and your preparer to work out the New York treatment after the fact, which is where the errors happen. We model the federal and New York outcome together before the study is commissioned, so you know what the number actually is on both returns before you spend anything.
Related reading: the complete guide to cost segregation, our cost segregation study service, short-term versus long-term rental tax treatment, lookback studies and Form 3115, and multi-state tax planning.
New York Cost Segregation and Tax Questions
Does New York allow bonus depreciation?
No, with narrow exceptions for qualified New York Liberty Zone and Resurgence Zone property. For all other IRC Sec. 168(k) property placed in service after May 31, 2003, New York requires an addback and recomputes depreciation under IRC Sec. 167 as if the property had been acquired on September 10, 2001. Individuals report this on Form IT-398.
When is the New York PTET election deadline?
March 15 of the tax year itself, not the filing deadline. The election is annual and must be renewed every year through the entity's Business Online Services account, even if the entity elected in prior years. Only an authorized person can make the election.
Is the New York City PTET separate from the state PTET?
Yes. New York City operates its own pass-through entity tax for entities with New York City resident owners. It is a separate election with separate mechanics and it sits on top of the state PTET. Electing only the state PTET leaves the city layer of the federal deduction unclaimed.
Is cost segregation still worth doing on a New York property?
Generally yes. The federal deduction at up to 37% is the primary driver and New York does not disturb it. New York also allows the shorter recovery periods, so the state benefit accrues over the hold rather than in year one. The main planning work is modeling the year-one state and city addback, which for a New York City resident can approach 14.8% of the accelerated amount.
How does the New York depreciation addback affect my gain when I sell?
It reduces it. Because New York basis was never written down by bonus depreciation, your New York basis is higher than your federal basis and your New York gain is correspondingly smaller. Non-residents must also make an estimated payment at closing on Form IT-2663, computed on the gain, so an accurate New York basis directly reduces the cash required at the closing table.
Book a New York Tax Strategy Call
Pick a time below. We will walk through your New York property or business, model the federal and New York outcome side by side, and tell you plainly whether a study is worth running.
New York tax rates, pass-through entity tax rules, and depreciation conformity provisions described on this page reflect law in effect as of August 2026 and are provided for general information only. State conformity changes frequently and often retroactively. Nothing here is tax advice for your situation, and no client relationship is created by reading it. Talk to us about your facts before acting.