Tax publication

US state income tax digest - May 2026

  • Publication
  • 9 minute read
  • June 05, 2026

Welcome to the US State Income Tax Digest. We highlight significant income and business tax legislation, regulatory adoptions, judicial decisions, and administrative guidance.

In this issue

Featured article: Multiple states adjust conformity to federal P.L. 119-21, OBBBA

  • Connecticut adjusts conformity to Sections 168(n) and 174/174A
  • Hawaii updates IRC conformity for 2026 onward, decouples from IRC Sections 174A and 168(n)
  • Iowa removes GILTI designation from Section 951A deduction
  • Minnesota enacts legislation impacting OBBBA conformity
  • New York State and City final budget includes OBBBA conformity revisions

Two more states lower their corporate tax rates

  • Arkansas lowers corporate tax rate
  • Georgia legislation lowers corporate income tax rate, repeals various credits

Nexus/P.L. 86-272

  • New York appellate division upholds regulation interpreting P.L. 86-272

US state income tax digest - May 2026

(PDF of 194.1KB)

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Ed Geils

Ed Geils

Global and US Tax Knowledge Management Leader, PwC US

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