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This Week in State Tax

This week's TWIST reports on a Maryland sales and use tax development, New Hampshire's BET filing threshold increase, New York City's UBT credit reduction, and tax changes that are part of Pennsylvania’s recently signed budget bill.

State and Local Tax developments for the week of July 27, 2026

Maryland: State Supreme Court upholds treatment of certain electrical transmission and distribution equipment as being involved in ‘processing’

The Supreme Court of Maryland partially resolved a long-running controversy between the Comptroller and a public utility company involving the sales and use tax treatment of equipment used in transmitting and distributing electricity to customers. The Court affirmed the Appellate Court of Maryland determination that certain of the taxpayer’s transmission and distribution equipment was exempt from sales and use tax as it was used directly and predominantly in a production activity. The Supreme Court also upheld the appellate court determination that the taxpayer was entitled to interest on any timely refund. There was also an issue of the appropriate statute of limitations (not addressed further here) on which the high court reversed and remanded the case to the appellate court to consider the taxpayer’s arguments centered on the defense of equitable estoppel.

The procedural history of the case is extensive. In 2006, the taxpayer informed the Maryland Comptroller that it believed most of its transmission and distribution equipment qualified for the state production activity exemption. Maryland law exempts from sales and use tax the purchase of tangible personal property used “directly and predominantly” in a “production activity,” which is further defined to include “assembling, manufacturing, processing, or refining tangible personal property for resale.” The taxpayer argued that much of the equipment used to transmit and deliver electricity subjects the electricity to a series of actions intended to deliver electricity most efficiently at usable voltages to its customers and therefore constitutes “processing” for purposes of the production activity exemption.

The Comptroller commenced an audit, during which the taxpayer also sought a refund of certain tax payments it had erroneously made. The Comptroller denied both the refund request and the assessment challenge based on the view that the exemption did not apply to the transmission and distribution equipment. On appeal, the Maryland Tax Court, followed by the Circuit Court for Baltimore County, affirmed the Comptroller.

The taxpayer then sought its first review by the appellate court which held that some of the taxpayer’s equipment should qualify for the production activity exemption as there was definitely processing of the electricity going on, thereby requiring a remand to the Tax Court. On remand, the Tax Court determined that conductor, substation, and transformer equipment qualified as being used directly and predominantly in processing electricity because they were continually involved in changing the form and characteristics of the electricity to ensure delivery to the customer in a useable form. It denied the exemption for other items, including foundation support structures and electric meters used to measure customer usage. It was on remand to the Tax Court that the statute of limitations issues was first raised by the Comptroller. The Comptroller appealed to the Circuit Court of Anne Arundel County next, which affirmed the Tax Court on the applicability of the exemption but reversed on the issue of the Comptroller’s statute of limitations defense. That occasioned a second trip to the appellate court which upheld the Tax Court and circuit court determinations on the equipment exemption issue but reversed the circuit court on the statute of limitations issue.

In the present appeal to the Supreme Court of Maryland, the Court upheld the Tax Court’s exemption determinations, concluding that the taxpayer’s transmission and distribution system “subjects the electricity to a series of actions designed for the specific objective of delivering, over long distances, electricity generated out of State, to Maryland customers at a voltage suitable for their use. Such equipment is, therefore, used for ‘processing’ and, as such, performs a ‘production activity’” under state law. The Court also found that the Tax Court had relied on the “directly and predominantly” standard found in the state’s regulations and that the Tax Court’s findings were supported by substantial evidence.

For more information on Comptroller of Maryland v. The Potomac Edison Company, please contact Glenn Todd

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New Hampshire: Granite State increases threshold for BET filing

New Hampshire Governor Ayotte recently signed legislation increasing the threshold at which businesses are required to file a Business Enterprise Tax (BET) return and providing for automatic future BET rate reductions when certain revenue-based metrics are met. New Hampshire law currently requires business organizations to file a BET return if their gross business receipts or enterprise value tax base exceeds approximately $250,000, adjusted biennially for inflation. Effective January 1, 2027, the legislation increases the BET filing threshold to $400,000, also adjusted biennially for inflation. The legislation further establishes an automatic BET rate reduction mechanism under which combined Business Profits Tax (BPT) and BET revenues are compared to the official revenue plan. If specified surplus triggers are met, the BET rate is reduced by 0.05 percent for the following calendar year, although the rate may not be reduced below 0.25 percent. The legislation does not change the BPT filing thresholds or tax rate.

Please contact Jennifer Bates and Alex Lupo with questions about House Bill 155.

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New York City: Council approves measure to reduce UBT credit for individuals

The New York City Council approved a measure to reduce the personal income tax credit for unincorporated business tax (UBT) paid from 23 percent to 15 percent for individual city residents with income of $1.25 million or greater. It also phases down the credit allowed taxpayers with incomes of $1 million to $1.25 million. If approved by Mayor Mamdani, the new rule will be effective retroactively to January 1, 2026. 

As background, individual city residents may claim a credit against their city personal income tax liabilities for their share of city UBT paid by partnerships in which such residents are partners or businesses of which residents are proprietors. The credit is currently 23 percent for all taxpayers with incomes over $142,000, with higher credits for those with incomes less than $142,000 determined on the basis of a formula.

Please contact Alec Schwartz with questions about Int. No. 0972-2026.

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Pennsylvania: Commonwealth budget contains changes to certain Philadelphia taxes

Pennsylvania’s 2025-2026 budget bill, signed into law by Governor Shapiro, makes several changes in the computation of the net income tax base of the Philadelphia Business Income and Receipts Tax (BIRT). Under the new provisions, the BIRT follows the Pennsylvania Corporate Net Income Tax (CNIT) treatment for: Internal Revenue Code (IRC) sections 59(e), 174 and 174A (research and experimental expenditures); IRC section 481 (accounting-method adjustments relating to R&E expenditures); IRC section 168(n) (bonus depreciation for qualified production property); and IRC section 163(j) (business interest limitation).

As a result, Philadelphia effectively decouples from the federal R&E provisions enacted by OB3. In practical application, this means that current year domestic R&E expenses must be capitalized and deducted at 20 percent per year over five years for BIRT purposes; previously capitalized 2022–2024 domestic R&E costs are not immediately deductible for BIRT; and foreign R&E expenditures are subject to a five-year recovery period for BIRT purposes.

Recall that Pennsylvania CNIT also has a unique approach to IRC section 163(j) conformity, which the Philadelphia BIRT will now follow. For a Commonwealth taxpayer filing as a member of a federal consolidated group, the IRC 163(j) limitation does not apply for Pennsylvania CNIT (and thus Philadelphia BIRT) purposes unless a limitation exists for the federal consolidated group. If so, then the taxpayer computes the IRC section 163(j) limitation on an “as-if separate” basis for Pennsylvania CNIT purposes, based on IRC section 163(j) as it existed on December 31, 2024.

The legislation expressly states that it applies retroactively to tax years beginning after December 31, 2024. Additionally, the legislation includes a provision that any future changes to Pennsylvania CNIT related to the IRC would automatically flow to the computation of the Philadelphia BIRT.

Please contact Robert Weyman with questions about S.B. 146.

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