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New Jersey Legislation Implements Major Tax Changes, Including Market-Based Sourcing for Partnerships

New Jersey Gov. Phil Murphy signed into law A5323 on July 3, 2023, which includes wide-ranging provisions that will considerably impact businesses. The legislation includes significant changes to the state’s Business Tax reform that was originally enacted in 2018, which brought about unitary-combined filing and market-based sourcing for corporations beginning in 2019.

One of the most noteworthy changes of A5323 is that partnerships and sole proprietors are required to retroactively use the same apportionment and sourcing rules as corporations. This results in the elimination of a 3-factor apportionment formula, thereby adopting a single sales factor (SSF) formula, in addition to market-based sourcing (MBS) for service providers. As SSF/MBS is effective January 1, 2023, the provision includes estimated tax penalty and interest relief for qualifying taxpayers.

The implementation of MBS may affect pass-through owners who reside in low or no-income tax states. These owners may have used various tax planning strategies to minimize state tax, such as shifting some income into a partnership “management company,” coupled with the state’s cost of performance sourcing, resulting in untaxed state income. Now, such strategies may need to be rethought.

Changes to Corporate Business Tax (CBT)

The preponderance of A5323 includes provisions affecting New Jersey CBT, including these key provisions:

It should be noted that the provisions are set to take effect in varying tax years, with some provisions being retroactive. Some of the best news coming from A5323 is what the legislation doesn’t include. As the Legislature did not extend the 2.5% CBT surtax, the surtax is now scheduled to sunset at the end of 2023.

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Much of A5323 is filled with distinct CBT provisions that will impact businesses that are specific to their facts and circumstances. However, businesses with NOL carryforwards, GILTI income, file NJ combined returns, have foreign affiliates, or are subject to IRC 163(j) interest limitations will want to consider reviewing any potential implications and their current state filing positions.

One of the most notable changes lumped into the “CBT Legislation” is a non-CBT provision, which includes partnerships and sole proprietors adopting single sales/market-based sourcing. New Jersey adopted market-based sourcing for corporations as of 2019, and the state is doubling down to further expand the use of these rules. The adoption of a single-sales factor and market-based sourcing follows the ongoing trend we’ve seen for the last decade, as states continue to look to “export” the tax to out-of-state businesses by relying solely on a sales factor for apportionment and sourcing based on the location of the customer.

As businesses analyze the potential impact of the legislation, they should also monitor for any subsequent guidance from the Division of Taxation.