SALT Alert - State Conformity with 2017 Federal Filing Deadlines

Updated March 28, 2017 for Recent State Changes

On July 31, 2015, President Obama signed H.R. 3236, which modified the federal return filing due dates for various entity types. For 2016 calendar year end business entities, C Corporations will now have an original due date (before extensions) for filing a federal tax return of April 15, 2017 (fifteenth day of the fourth month after the taxpayer’s year-end) while partnerships will have an original federal due date of March 15, 2017 (fifteenth day of the third month after the taxpayer’s year-end). S Corporations will continue to have a federal due date of March 15, 2017 (fifteenth day of the third month after the taxpayer’s year-end).

States have been considering whether to statutorily conform to these new due date deadlines or simply leave current due dates in place. As it currently stands, taxpayers may experience difficulty in filing some state returns.

Currently, Massachusetts and Wisconsin C Corporation tax returns will be due before the federal tax return is due if no action is taken by these states to modify their respective laws. In the case of Massachusetts and Wisconsin, 2016 calendar year end C Corporation income tax returns filed in those states will continue to be due on March 15, 2017.

Taxpayers should be aware that many states which historically had deadlines after the federal deadline will now be due at the same time as the federal return. The attached matrix summarizes the state due dates as of February 9, 2017 for Partnerships, C Corporations, and S Corporations.

See the State Return Due Dates Matrix here.