Analysis

Multistate Tax alert archive

State tax legislative, judicial, and administrative developments

​The Multistate Tax alert archive includes external tax alerts issued by Deloitte Tax LLP's Multistate Tax practice during the last three years. These external alerts highlight selected developments involving state tax legislative, judicial, and administrative matters. The alerts provide a brief summary of specific multistate developments relevant to taxpayers, tax professionals, and other interested persons.

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Enacted Wisconsin legislation provides for IRC conformity update and other tax law changes

On April 3, 2018, Governor Walker signed Assembly Bill 259, (2017 Wisconsin Act 231 (Act 231)) which includes the following notable amendments to Wisconsin tax law:

  • Effective for taxable years beginning after December 31, 2016, and before January 1, 2018, updates Wisconsin corporate and individual income tax conformity to the Internal Revenue Code (IRC) as amended through December 31, 2016.
  • Effective for taxable years beginning after December 31, 2017, updates Wisconsin corporate and individual income tax conformity to the IRC as amended through December 31, 2017, with decoupling from certain provisions of the 2017 Tax Reform Act (the Act).
  • Updates the evidentiary standard for proving a transaction has economic substance.
  • Amends the rules by which a taxpayer may be precluded from relying on past audits conducted by the Wisconsin Department of Revenue.

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2018 Multistate Tax alerts

 

2017 Multistate Tax alerts

 

2016 Multistate Tax alerts

Find out what you missed in 2016. Explore our archive.

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2015 Multistate Tax alerts

Find out what you missed in 2015. Explore our archive.

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2014 Multistate Tax alerts

Find out what you missed in 2014. Explore our archive.

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2013 Multistate Tax alerts

Key updates in 2013. Explore our archive.

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