New York Just Split From the Federal R&D Break — and Made It Retroactive to 2025
What the budget actually changed
Governor Hochul signed the Fiscal Year 2027 state budget into law on May 28, 2026, after the Legislature passed it on May 27. Buried in Parts F and G of the tax bill is a change that reaches a lot of New York businesses without using the word that would warn them: decoupling. New York State and New York City are stepping away from two federal write-offs created by the One Big Beautiful Bill Act — the immediate expensing of research and experimental costs under Internal Revenue Code Section 174A, and certain accelerated depreciation and bonus provisions. Part G aims squarely at the New York City corporate tax base.
Here’s the mechanics in plain terms. On your federal return, OBBBA lets you deduct domestic R&E costs in full the year you spend them, starting with tax years after December 31, 2024. New York now says no — for state and city purposes, you spread those same costs over five years. New York City layers on a mid-year convention, so its timing doesn’t even match the state’s. You can end up with three different numbers for the same dollar of spending: one federal, one state, one city.
The retroactive piece is what stings
States decouple all the time. What makes this one land harder is the effective date: tax years beginning on or after January 1, 2025. That’s not next year’s problem. It’s the 2025 returns many businesses are finishing on extension this summer. If you already took the full federal R&E deduction on a 2025 return — or planned to — your New York State and City numbers now come out higher, even though your federal bill doesn’t move.
The Legislature softened the edge in one specific way. The budget provides interest and penalty relief for tax underpayments tied to the retroactive part of the decoupling, which is a fair acknowledgment that nobody could have paid 2025 estimates against a rule written in May 2026. Relief from penalties is not the same as relief from the tax. The added New York and City liability is real; you just won’t get punished for not having a time machine.
“We don’t do R&D” — yes, you probably do
The fastest way to miss this is to assume R&D means lab coats. The tax definition is broader than the dictionary one. A software shop writing new code, a manufacturer refining a process, an engineering firm solving a site-specific problem, a product company improving a design — all of that can sit inside Section 174/174A. Plenty of our closely held business clients have been claiming the federal R&E deduction without ever calling it “research.”
If that’s you, the decoupling raises your New York and City taxable income compared to your federal return, and it creates a timing mismatch you’ll carry for years as those costs amortize. The pain concentrates in two places: companies that spend heavily on development relative to their margins, and pass-through owners — S corporations and partnerships — where the adjustment has to be tracked at the entity level so it flows correctly onto the owners’ New York personal returns. Get the entity-level tracking wrong and the error multiplies across every K-1.
What this does to your books and your estimates
Three practical things change. You’ll need separate New York State and New York City amortization schedules for R&E costs, kept apart from the federal treatment and apart from each other because of the city’s convention. Your quarterly estimated payments for 2026 should reflect the higher state and city base now, not as a March surprise. And the bonus-depreciation piece matters too — New York won’t follow the full federal write-off there either, which compounds the gap for any business that bought equipment expecting to deduct it fast. We walk through the federal side of that in our guide to 100% bonus depreciation in 2026; New York just made the state half of the picture less generous.
The state’s motive isn’t hidden. Albany expects the depreciation changes alone to preserve roughly $1.7 billion in business tax revenue. New York decided it couldn’t afford to mirror the federal giveaway, so it didn’t. For owners, that means the federal incentive to invest in R&D and equipment is still there — it just stops at the New York line.
How The Reed Corporation helps
We’re already building the separate New York and City schedules into the 2025 returns we’re preparing, and re-running 2026 estimates so clients aren’t caught short. For pass-through owners, we track the decoupling adjustment at the entity level and follow it onto each owner’s return, which is where these things usually break. This is the kind of change that sits right between corporate tax compliance and forward tax strategy — you have to get the 2025 filing right and plan the next three years of amortization at the same time. If you claim federal R&D or bonus depreciation and you operate in New York, let’s look at your exposure before the extended returns go out.
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Frequently Asked Questions
What does state rd decoupling 2026 New York mean for a 2025 return that is already filed?
New York has stopped following the federal deduction for research and experimental expenditures. Part F of the fiscal year 2026-2027 budget bill, Chapter 59 of the Laws of 2026, signed May 28, 2026, separated the state from Internal Revenue Code sections 174 and 174A. The rule applies to tax years beginning on or after January 1, 2025, a year most filers already closed out. Clients asking about state rd decoupling 2026 New York usually want to know whether they must amend, and for a business that spent money on research during 2025 the answer is normally yes.
The change works as two entries on the same New York return. You add back the federal research deduction with addition modification code A-225. You then subtract those same expenditures over a sixty-month period using subtraction code S-221 for amounts paid or incurred on or after January 1, 2025. Money paid or incurred before that date stays on the older track and continues to be amortized under section 174 as that section read on January 1, 2022, reported with subtraction code S-222. The state counts in months rather than in whole years, and a partial first year is where the arithmetic usually goes wrong.
Here is the math with real numbers. A Brooklyn software company taxed as an S corporation on Form 1120-S paid 600,000 dollars of qualifying research wages during calendar 2025 and deducted the full 600,000 dollars federally. New York wants that 600,000 dollars added back. The sixty-month subtraction releases 10,000 dollars a month, and the state clock starts in the month the company first realized benefits from the research, which was July 2025. Six months of subtraction comes to 60,000 dollars, leaving a net New York addition of 540,000 dollars. An owner near the top New York State rate of about 10.9 percent picks up roughly 58,860 dollars of additional state tax on that flow-through income, and a New York City resident owner adds the city resident income tax of about 3.876 percent, another 20,930 dollars or so.
The mistake we correct most often is filing this away as a 2026 problem and waiting for the 2026 return. The effective date is tax years beginning on or after January 1, 2025, so a calendar-year 2025 return that has already gone out the door is the return that needs fixing. A second mistake is reaching for a federal amendment. Federal law did not move here. Public Law 119-21, enacted July 4, 2025, restored immediate expensing of domestic research at the federal level, and New York declined to follow it, so a federal Form 1040-X or its corporate counterpart is usually unnecessary. Only the New York column moves.
Notice N-26-1, issued June 16, 2026, is the Department of Taxation and Finance guidance on all of this, and it describes penalty and interest relief for taxpayers who file or amend their 2025 returns within the terms the notice sets. That relief is not automatic in every situation, so read the notice before assuming it reaches your facts. The Department posts the notice and the modification code tables at tax.ny.gov. Hold on to project-level payroll and contractor records under the standards described in the IRS recordkeeping guidance, because a sixty-month schedule has to survive four more filing seasons after this one.
Handle the amended return and the subtraction schedule together. We build the 2025 correction and the multi-year subtraction schedule in a single pass through tax strategy consulting, and clean records through bookkeeping keep the project-cost split defensible. Expect this subtraction to appear on New York returns every year through the end of the decade, so build the schedule once and carry it forward.
Which New York form carries the research modification for my entity type?
The decoupling reaches more than one tax. It applies under Article 9-A, the franchise tax on general business corporations, and under Article 22, the personal income tax that partners and sole proprietors pay. Article 33, the franchise tax on insurance corporations, is covered as well. That breadth is why the question of which form to use comes up before the question of how much to add back. One client group holding a corporation and a partnership under common ownership needed three different New York forms for a single research project.
Individuals, partnerships, estates and trusts report the modification on Form IT-225, the New York State modifications schedule that attaches to the personal income tax return or to the partnership return. Corporations use Form CT-225, or Form CT-225-A when the taxpayer files as part of a combined group. An S corporation passes the modification through to shareholders on Form CT-34-SH, which means the shareholder picks up the addition on a personal return even though the computation happened at the entity level. A partnership that filed Form 1065 federally still owes the New York modification through its partners. Estates and trusts holding an operating business fall into the same IT-225 pattern, which catches families who keep a company inside a trust.
Run the numbers before deciding how urgent this is. A Queens engineering partnership paid 300,000 dollars of qualifying research costs during calendar 2025 and deducted all of it federally. The New York addition is 300,000 dollars under code A-225. The sixty-month subtraction releases 5,000 dollars a month, and the partnership first realized benefits from the work in October 2025, so three months of subtraction is 15,000 dollars. Net addition for 2025 is 285,000 dollars. Split between two equal partners, each picks up 142,500 dollars of extra New York income, which is about 15,533 dollars of state tax each at roughly 10.9 percent.
The same budget bill decoupled New York from the accelerated depreciation allowed under Internal Revenue Code section 168(n) for qualified production property. Individuals use addition code A-209 and subtraction code S-213 for that item. Corporations use A-507 and S-507. Keep the depreciation modification separate from the research modification on the schedule, because they carry different codes and different recovery patterns even though both arrived in the same legislation. Anyone still tracking federal depreciation on Form 4562 now needs a parallel New York schedule that will not match it.
The error that costs the most time later is commingling the two pools of research spending. Expenditures paid or incurred before January 1, 2025 belong on the older amortization track under subtraction code S-222, and expenditures paid or incurred on or after that date belong on the sixty-month track under code S-221. Clients who dump both into one column produce a subtraction that no one can tie out three years from now, and the Department can ask for the supporting schedule at any point within the assessment period. Federal cost-recovery rules in Publication 946 will not answer the New York question for you. Label each schedule with the benefit-realization month, because that single date drives every later subtraction.
Sort the entity question first, then the pool question, then the arithmetic. Our tax strategy consulting team maps each entity in a client group to its correct form, and bookkeeping support keeps the two research pools separated in the general ledger from the start. Once the schedule is built correctly for 2025, every later year becomes a copy-forward exercise rather than a rebuild.
Does the New York City decoupling reach my partnership or sole proprietorship?
Yes, and this is the part that surprises people. Business owners researching state rd decoupling 2026 New York often miss that the City acted separately and reached a wider set of taxpayers. Part G of the same chapter amended the Unincorporated Business Tax, the General Corporation Tax, the bank tax and the Business Corporation Tax. Because the Unincorporated Business Tax sits in that list, partnerships and sole proprietors are affected, not only corporations. The City did not simply adopt the state rule by reference.
The City rule is retroactive to tax years beginning after December 31, 2024, so it lands on the same 2025 returns the state change lands on. The Unincorporated Business Tax runs at about 4 percent on unincorporated business income earned in the City, and it sits on top of the New York State personal income tax that can reach about 10.9 percent and the New York City resident income tax of about 3.876 percent. A sole proprietor filing Schedule C who never thought of research expensing as a city issue now has a city issue.
The two governments do not start the clock in the same place. New York State follows section 174A(c) and begins amortizing from the month the taxpayer first realizes benefits from the research. New York City amortizes from the midpoint of the taxable year. Those are genuinely different start dates, and for a calendar-year taxpayer the City midpoint is July 1 regardless of when the work paid off. You cannot copy the state schedule into the city return and expect it to tie. Confirm the benefit-realization month in writing before either schedule is built, because reconstructing it later is guesswork.
Work an example. A Manhattan design studio operating as a two-member partnership incurred 240,000 dollars of qualifying research spending during calendar 2025 and first realized benefits in April 2025. The state sixty-month subtraction of 4,000 dollars a month runs from April, giving nine months, or 36,000 dollars, on the 2025 return. The City runs from the July 1 midpoint, giving six months, or 24,000 dollars. That 12,000 dollar gap between the two subtractions is real, it recurs in mirror image at the far end of the schedule, and it means the Unincorporated Business Tax add-back for 2025 is 216,000 dollars against a state add-back of 204,000 dollars.
The mistake here is assuming that an entity outside the corporate franchise tax is outside the change. Owners hear that the state decoupled from research expensing, confirm they do not file Form 1120, and stop reading. The Unincorporated Business Tax reaches freelancers, consultants and partnerships doing product work in the five boroughs, and the City has its own filing and payment schedule that does not wait for the state amendment to be processed. A consultant billing product-development work from a Brooklyn apartment is squarely inside the Unincorporated Business Tax if the work is carried on in the City. General guidance at the IRS small business and self-employed hub is a fine federal starting point, but the city computation is its own animal.
Treat the state schedule and the city schedule as two separate documents built from one set of source records. Our tax strategy consulting group prepares both, and clients who also use individual tax return support get the flow-through numbers reconciled to the personal return in the same cycle. Building both schedules now turns the 2026 filing season into a review exercise instead of a reconstruction.
What relief is available if my 2025 New York return was already filed without the add-back?
Notice N-26-1, issued June 16, 2026, is the guidance to read. It sets out the addition and subtraction codes, explains the sixty-month recovery, and describes penalty and interest relief for taxpayers who filed a timely 2025 return and then amend it to pick up the modification. The relief exists because the law was signed May 28, 2026, well after most 2025 returns were prepared, and the Department recognized that taxpayers could not have reported a rule that did not exist yet.
Relief is not the same as forgiveness of the tax. The additional New York tax created by the add-back is still owed, and interest can run on an underpayment for the period it was outstanding unless the notice’s terms cover it. Read the notice on its own words rather than relying on a summary, and note the filing conditions it attaches. The notice also confirms that the modification applies whether or not the taxpayer made any particular federal election for the same costs. The Department posts it at tax.ny.gov with the current modification code tables.
Consider a Bronx manufacturer that filed its 2025 Article 9-A return in March 2026 showing 90,000 dollars of New York taxable income after deducting 400,000 dollars of research costs. The A-225 addition restores the 400,000 dollars. The sixty-month subtraction at 6,666 dollars a month from a September 2025 benefit date returns four months, roughly 26,664 dollars. Amended New York taxable income becomes about 463,336 dollars. The company will owe tax on that increase, and the value of the notice is that a properly filed amendment under its terms can spare the penalty layer that would otherwise attach to a late-paid 2025 balance.
The common mistake is waiting for the Department to send a bill. Nothing about this change is self-executing from the state side. No amended assessment arrives automatically, no corrected Schedule K-1 shows up in the mail, and a taxpayer who sits still simply carries an understated 2025 liability with interest accruing. The other version of the same error is amending the federal return by reflex. Federal treatment did not change, and a federal amendment that mirrors a state-only modification creates a mismatch that takes months to unwind through the IRS notice process.
Sequence matters when several entities are involved. Amend at the entity level first so corrected Schedule K-1 information reaches owners, then amend the owner returns. Doing it in the other order produces two rounds of owner amendments. Where the entity is an S corporation, the Form CT-34-SH information has to be corrected before shareholders can file accurately, and the same logic applies to partners of a partnership. Where the entity also operates in the City, the Unincorporated Business Tax return needs the same treatment on its own schedule. Owners who make quarterly payments should revisit the 2026 installments, since the federal safe harbor rules in Publication 505 have no bearing on a New York underpayment created by a state-only modification.
If your 2025 return is already filed and research spending was part of it, this belongs on the near-term calendar rather than the year-end list. Request a consultation to have the amended returns scoped against the notice terms, and pair that with tax strategy consulting so the 2026 estimates reflect the new base. Clients using individual tax return support get the entity and owner amendments sequenced in the right order. Acting while the notice relief is available is worth more than any planning move made after an assessment lands.
Is there a New York credit that offsets the state rd decoupling 2026 New York add-back?
Not in the general sense that most owners hope for. Anyone reviewing state rd decoupling 2026 New York asks next whether a state research credit softens the result, and the honest answer is that New York has no general standalone research credit available to any business that qualifies. What exists are two targeted programs, both of which require you to be admitted to them rather than simply claiming a line on a return.
The first is the Excelsior research and development credit. It equals 50 percent of the federal research credit attributable to New York expenditures, and it is capped at 6 percent of New York qualified research expenditures. That cap rises to 7 percent for semiconductor supply-chain projects and to 8 percent for green projects. The credit is part of the Excelsior Jobs Program, so participation depends on program admission and on meeting job and investment commitments, not simply on having spent money on research. Admission runs through Empire State Development, and the credit is claimed only after a certificate of tax credit is issued for the year.
The second is the Life Sciences research and development credit. The rate is 15 percent for a company with 10 or more employees and 20 percent for a smaller one, capped at 500,000 dollars a year for up to three consecutive years, and it also requires certification from Empire State Development. Both programs are administered outside the return itself, which is a different posture from a credit you compute and attach. A company that misses a certification window loses that year, because neither credit can be claimed retroactively without the certificate.
Put numbers on it. A Long Island City device developer with 8 employees and 700,000 dollars of New York qualified research spending in a certified Life Sciences year could look at a 20 percent credit of 140,000 dollars, subject to the annual cap and to the terms of its certification. Against that sits the decoupling: the same 700,000 dollars is added back for New York and returned at 11,666 dollars a month over sixty months. The credit and the modification are separate computations that happen to touch the same expenditures, and neither one adjusts the other. Neither program refunds the state tax created by the add-back, so treat them as separate planning tracks.
The mistake here is assuming the federal research credit under section 41 flows through to New York on its own. It does not. A company can claim a federal credit, carry it on its federal return, and still have no New York credit at all if it is not in one of the two programs. A related error is treating the federal deduction and the federal credit as one item. They are separate, the reduced-deduction election interacts with the credit federally, and the New York add-back is measured against the deduction actually taken. Businesses reviewing federal expense treatment in Publication 535 or reporting flow-through income on Schedule E should keep the credit analysis in a separate file from the modification analysis.
Model the credit application and the add-back side by side before deciding whether a program application is worth the compliance burden. Our tax strategy consulting team runs that comparison, and bookkeeping support produces the expenditure detail that both the certification and the modification schedule will need. Companies that document New York research spending well during 2026 will be in a far better position when the next round of program applications opens.