Tax publication

US State Income Tax Digest - April 2026

  • Publication
  • 5 minute read
  • May 06, 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: Kentucky enacts IRC conformity legislation, Sections 174/174A, 163(j) changes and delays combined reporting deduction
  • Kansas removes GILTI reference, maintains 100% subtraction under Section 951A
  • Maine updates IRC conformity, treatment of Sections 174 and 168(n)
  • Maryland enacts modifications for Sections 168(k) and 168(n), but no adjustments required for Sections 174/174A and 163(j) beginning in 2026
  • Michigan Treasury announces research credit proration percentages
  • Nebraska legislation provides relief from “foreign adversarial company” designation
  • Oregon legislation requires modifications for Section 168(k)Oregon legislation requires modifications for Section 168(k)
  • Wisconsin extends research credit carryforward period to 50 years

US State Income Tax Digest - April 2026

(PDF of 196.38KB)

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Ed Geils

Ed Geils

Global and US Tax Knowledge Management Leader, PwC US

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