As we head into the 2026 filing season, tax professionals are operating in an environment unlike any we have seen in recent memory: a smaller and more automated IRS, the new OBBBA, and rapid experimentation with AI-enabled tools inside the Service. This field guide is designed to separate what we know for sure from where the IRS is likely to move next, and to translate both into practical planning moves. It does not predict the future; instead, it offers a structured way to think about enforcement, documentation, and client strategy when the rules, the technology, and the politics are all in motion.

Contracts, Signing Bonuses, and the Substantial Presence Test
In tighter job markets, recruits are often offered signing bonuses (and sometimes moving expenses) to join a firm. Sometimes construction workers temporarily relocate to jobs in other states while they are employed by the company that hired them in their home state. This article reviews some of the foundational tax concepts to consider when evaluating sourcing of income for state tax purposes.


