Our Tax Service Offerings

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Why Withum?

For over 40 years, our tax advisors have been helping businesses large and small with planning, preparation, and compliance. As a nationally recognized Top‑25 firm and independent member of the global HLB network, we offer deep expertise in international, federal, state, and local tax and develop cost‑effective tax strategies wherever you operate.

Connect with Our Leaders

Steve-Talkowsky_Web
Partner, Managing Director, National Tax Services
Red Bank, NJ

Tax Insights

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Global supply chain disruptions in ports cause major increased in tariffs.
Recent Tariff Developments: Changes to the Canadian Tariff List Under Section 338 and Updates on IEEPA Tariff Refunds

Changes to the Canada Tariff List Under Section 338 The U.S.-Canada trade conflict has escalated significantly over the past several months, marked by the rollout of retaliatory tariffs and warnings of slowing economic growth. President Donald Trump signed a proclamation on October 23, 2026, modifying the 50% U.S. tariffs on Canadian imports under Section 338…

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Panorama view aerial view new development neighborhood.
What Treasury’s New Single-Family Home Rules Could Mean for Real Estate Investors

The U.S. Treasury Department has proposed regulations that would implement the 21st Century ROAD to Housing Act, which restricts certain large institutional investors from purchasing single-family homes beginning January 7, 2027. Under the law, the restrictions generally would apply to an investor engaged in the business of investing in, owning, renting, managing or holding single-family…

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AFR - Applicable Federal Rate acronym on notepad, Business concept background
Timing AFR-Sensitive Transactions Before October 31, 2026

The IRS released the November 2026 applicable federal rates (AFRs), which are higher than October’s. Accordingly, any client planning an intrafamily loan, an installment sale to a grantor trust or a seller-financed sale has only a few days left to lock in October’s lower rates. Current Rate Change As published under IRC §1274(d), October 2026…

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Word TAX RELIEF. Written on a calculator on an office desk.
California SB 1435: Retroactive Change to the Personal Income Tax Business Interest Limitation

California Senate Bill 1435 corrects a conformity omission affecting business interest deductions for taxpayers subject to California personal income tax. Signed September 14, 2026, the law adds R&TC §17225(c), providing that the federal limitation under IRC §163(j) does not apply for California personal-income-tax purposes for taxable years beginning on or after January 1, 2025. Individuals…

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