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Irwin Slomka focuses his practice on state and local tax controversies before administrative and judicial bodies in New York and throughout the United States.He has broad experience in tax planning for the full spectrum of corporate and pass-through entities as well as individuals and their related business transactions. He also regularly advises and handles litigation for such industries as financial services, banking, real estate, telecommunications, retailing, and manufacturing.Irwin regularly speaks on a variety of issues concerning the taxes of New York State, New York City, and other jurisdictions before organizations such as the New York State Bar Association Tax Section, the Committee on State Taxation, the Wall Street Tax Association,&nbsp;the Tax Executives Institute, the Institute of International Bankers, and the Committee on Banking Institutions. He spoke before the New York State Bar Association on the state and local tax issues involving GILTI. He has authored numerous articles that have appeared in such publications as Law360, the Journal of Multistate Taxation and Incentives, and the&nbsp;Real Estate Finance Journal. He has also been the principal author of several reports issued by the New York State Bar Association Tax Section, including recent reports on draft amendments to the New York State corporate franchise tax regulations.Prior to going into private practice, Irwin served as deputy commissioner and general counsel for the New York City Department of Finance.

core/freeform

New York

ADG State + Local Tax

Alabama Tribunal Reluctantly Dismisses Taxpayer Appeal as Not Qualifying for State “Mailbox Rule”

The BR State + Local Tax Spotlight: April 2026

New York Appellate Court Upholds Sales Tax on Mixed Bundle of Services and Computer Software but Constrains State’s Position that “Primary Function” Test Cannot Be Used

The BR State + Local Tax Spotlight: February 2026

State Taxation of Foreign Income

What’s Shaking: Blank Rome’s State + Local Tax Roundup

Alabama Tax Tribunal Interprets Statute of Limitations Ambiguity to Avoid Having Purchaser’s Refund Claims Time-Barred

The BR State + Local Tax Spotlight: December 2025

NYC Tax Tribunal Applies Step Transaction Doctrine to Limit “Mere Change” Exemption Under Real Property Transfer Tax

The BR State + Local Tax Spotlight: October 2025

Blank Rome Represents Landing Gear Technologies in Sale to Setna iO Affiliate

The BR State + Local Tax Spotlight: August 2025

Appellate Court Upholds “Drop Shipment” Sourcing Regulation Under Washington B&O Tax

Chambers USA 2025 Recognizes Blank Rome Attorneys and Practices

Blank Rome Attorneys Recognized in 2025 Lawdragon 500 Leading Global Tax Lawyers

Massachusetts Court Subjects Nonresident to Income Tax on Gain from Stock Sale

The BR State + Local Tax Spotlight: April 2025

The BR State + Local Tax Spotlight: March 2025

The BR State + Local Tax Spotlight: February 2025

Supreme Court of Arkansas Allows Corporation to Allocate Interest Expense Incurred to Fund Corporate Spin-off

The BR State + Local Tax Spotlight: January 2025

New York State Tax Developments

Blank Rome Secures Cancellation of Two-Million-Dollar Assessment Levied on Individual Taxpayers

New Jersey Tax Court Rules That Individuals Are Not Subject to Tax on “Deemed Dividends” under IRC Section 965

NYC Judge Applies Step Transaction Doctrine but Cancels Real Property Transfer Tax Assessment

The BR State + Local Tax Spotlight: October 2024

Nebraska Supreme Court Upholds Denial of Deduction for Section 965 Inclusion Income

The BR State + Local Tax Spotlight: September 2024

Blank Rome Represents Wabtec in Sale of Unitrac Railroad Materials to voestalpine Railway Systems Nortrak

Minnesota Supreme Court Holds That Market Research Performed by Sales Representatives Exceeds P.L. 86-272 Protection

The BR State + Local Tax Spotlight: August 2024

The BR State + Local Tax Spotlight: July 2024

The BR State + Local Tax Spotlight: June 2024

Blank Rome Attorneys and Practices Highly Ranked in The Legal 500 United States 2024

Chambers USA 2024 Recognizes Blank Rome Attorneys and Practices

New York City Announces Anticipated Deviations from Recently Promulgated New York State Corporate Tax Regulations

The BR State + Local Tax Spotlight: May 2024

Blank Rome Represents Wabtec in Sale of Swiger Coil Systems to Integrated Power Services

The BR State + Local Tax Spotlight: April 2024

Microsoft Prevails in California Dispute on Inclusion of Gross Foreign Dividends in Apportionment Formula

The BR State + Local Tax Spotlight: March 2024

The BR State + Local Tax Spotlight: February 2024

New York Appellate Court Rules in Favor of S Corporation Shareholder Entitlement to New York QEZE Tax Credits

The BR State + Local Tax Spotlight: January 2024

The BR State + Local Tax Spotlight: December 2023

New York and Tri-State Taxation Conference

Michigan Tax Tribunal Holds That Parent Properly Excluded its Wholly Owned Subsidiary from its Unitary Business Group Return

What’s Shaking: Blank Rome State + Local Tax Roundup

The BR State + Local Tax Spotlight: November 2023

Blank Rome Tax Update 2023

The BR State + Local Tax Spotlight: October 2023

California Administrative Tribunal Upholds Special Industry Apportionment Formula for Mutual Fund Service Provider

The BR State + Local Tax Spotlight: September 2023

New York State Judge Rules for Securities Broker-Dealer on Corporate Tax Sourcing, Investment Income, and Investment Tax Credits

The BR State + Local Tax Spotlight: August 2023

3 Takeaways from Biz Comments on NY Draft Corp. Tax Regs

Minnesota Tax Court Addresses What Constitutes Solicitation under Public Law 86-272

The BR State + Local Tax Spotlight: July 2023

The BR State + Local Tax Spotlight: June 2023

Blank Rome Attorneys and Practices Highly Ranked in The Legal 500 United States 2023

State + Local Tax Summit

Chambers USA 2023 Recognizes Blank Rome Attorneys and Practices

New York Governor Signs into Law 2023–24 Budget Bill Containing Important Tax Changes

The BR State + Local Tax Spotlight: May 2023

Litigation

State + Local Tax

Tax Controversy

<ul>
<li>Successfully argued in 2019 before the Colorado Supreme Court on behalf of a client in a case involving the Colorado taxation of a corporate holding company with foreign subsidiaries.</li>
<li>Prevailed before the New York City Tax Appeals Tribunal in pre-empting the City of New York from forcibly combining a bank’s mortgage holding subsidiary.</li>
</ul>

Irwin M. Slomka

Irwin M. Slomka

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