Photo of Mary Kay McCalla Martire

Mary Kay McCalla Martire focuses her practice on state and local tax disputes. She helps clients with audits, tax-related litigation, letter rulings and settlement conferences. Mary Kay has experience resolving disputes involving income, sales and use, utility and telecommunications taxes, as well as premium and retaliatory tax. Read Mary Kay McCalla Martire's full bio.

This post originally appeared on McDermott’s Inside SALT blog, which is dedicated to in-depth coverage of issues surrounding state and local tax.

In June 2018, just before the US Supreme Court ruling in Wayfair, Illinois enacted an economic nexus standard modeled after South Dakota’s law (see our prior coverage). The new Illinois standard takes effect on October 1, 2018. On September 11, the Illinois Department of Revenue (Department) issued an emergency rule (Regulation 150.803), together with other guidance found on its website, intended to assist remote retailers with compliance with the new law. Continue Reading Illinois Department of Revenue Issues Post-Wayfair Guidance Implementing October 1 Economic Nexus Law