09 January 2026

State corporate income and franchise tax developments in the fourth quarter of 2025

This alert provides a summary of the significant legislative and administrative actions that affected US state and local income/franchise and other business taxes for the fourth quarter of 2025.

Highlights include:

  • A summary of federal and state legislative developments in California, Delaware, District of Columbia, Illinois, Michigan, Pennsylvania and Texas
  • A summary of administrative developments in Alabama, Indiana, Iowa, Kansas, Louisiana, Maine, Massachusetts, Nebraska, New Hampshire, New Jersey, Rhode Island, Tennessee, Texas, Virginia, Wisconsin and San Francisco, CA
  • A discussion of state and local tax items to watch in Florida, Iowa, Massachusetts, Missouri, New York City and Texas
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Attachment

Fourth quarter 2025 state corporate income/franchise tax developments

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Contact Information

For additional information concerning this Alert, please contact:

State and Local Taxation Group

Published by NTD’s Tax Technical Knowledge Services group; Chris DeZinno, legal editor

Document ID: 2026-0161