2026 individual quarterly estimated Federal tax payments are due June 15, 2026, September 15, 2026, and January 15, 2027 for the remainder of the tax year.
The extended S corporation and partnership business tax deadline is September 15, 2026 and the extended individual and C corporation tax deadline is October 15, 2026. In order to meet these deadlines, UMMC must receive all information to prepare your returns by the dates identified below. If we do not receive all information needed by these dates, we cannot guarantee timely filings.
Documentation must be provided as follows:
Nonprofits (with calendar year-end) – extensions are valid until November 16, 2026 and information will be needed by September 14, 2026.
S Corporations and Partnerships (with calendar year-end) – information will be needed by July 11, 2026.
Individuals and C Corporations (with calendar year-end) – information will be needed by September 14, 2026.