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Sales Tax Update - January 2026

1/8/2026

2026 - THE YEAR OF THE SALES TAX AUDIT

As we predicted at the beginning of last year, 2025 brought heightened enforcement and increased sales tax audit activity for remote sellers and all sellers, particularly in e-commerce, SAAS and digital service industries.  In 2025, Dillon Tax Consulting represented taxpayers in more sales tax audits that in any of our previous years (30+) in multistate sales tax.  Furthermore, the states were far more aggressive in their pursuit of additional revenues than in previous experiences.  So what are some of the reasons for this, and why do we predict that it will continue ...

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affiliate nexus

Try, Try Again ... Illinois Imposes a New and “Improved?” Affiliate Nexus Law

Dillon Tax Consulting
2/10/2015

Effective January 1, 2015, out-of-state retailers are once again presumed to have sales tax nexus in Illinois if they satisfy the following criteria:

  • the out-of-state retailer has a contract with a person in Illinois;
  • under the contract, the person in Illinois refers potential customers to the retailer and the retailer pays to the person in ...
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