2026 Important Dates and Deadlines
In an effort to keep you informed on important deadlines for the current tax filing season, we have put together a chronological list of due dates by quarter. These include IRS deadlines as well as JFS imposed due dates.
First Quarter:
January 15, 2026 - Fourth Quarter Estimated Tax Payment for the period September 1 to December 31, 2025
January 31, 2026 – Fourth Quarter Payroll Reports for the period October 1 to December 31, 2025
January 31, 2026 - Forms W-2/W-3
January 31, 2026 - Forms 1099 NEC
February 6, 2026 (JFS) - completed tax organizers for LLC, Partnerships & S Corporations unless an extension has been requested.
February 28, 2026 - Forms 1099 MISC – paper filing
March 3, 2026 (JFS) - Completed tax organizers for Individuals, C Corporations & Trusts unless an extension has been requested.
March 15, 2026 – Tax return Forms 1065 (LLC’s & Partnerships) & 1120S (S Corporations)
March 31, 2026 – Forms 1099 MISC – electronic filing
Second Quarter:
April 1, 2026 (JFS) - First Quarter Estimated Tax Calculation for the period January 1 to March 31, 2026
April 3, 2026 (JFS) - Completed tax organizers for Non-profit Organizations unless an extension has been requested.
April 15, 2026 - Tax return Forms 1040 (Individuals), 1120 (Corporations) & 1041(Trusts)
April 15, 2026 - First Quarter Estimated Tax Payment for the period January 1 to March 31, 2026.
April 30, 2026 - Payroll Quarterly Filing for the period January 1 to March 30, 2026
June 1, 2026 (JFS) - Second Quarter Estimated Tax Calculation for the period April 1 to May 31, 2026
June 15, 2026 – Second Quarter Estimated Tax Payment for the period April 1 to May 31, 2026
Third Quarter:
July 31, 2026 - Payroll Quarterly Filing for the period April 1 to June 30, 2026
August 1, 2026 (JFS) - Completed tax organizers for all individuals and entities that filed an extension
August 25, 2026 (JFS) - Third Quarter Estimated Tax Calculation for the period June 1 to August 31, 2026
September 15, 2026 - Third Quarter Estimated Tax Payment for the period June 1 to August 31, 2026
September 15, 2026 - Tax return Forms 1065 (LLC’s & Partnerships) & 1120S (S Corporations) for those that extended by March 15, 2026
Fourth Quarter:
October 15, 2026 - Tax return Forms 1040 (Individuals), 1120 (Corporations) & 1041(Trusts) for those that extended by April 15, 2026
October 31, 2026 - Payroll Quarterly Filing for the period July 1 to September 30, 2026
October 15 – December 15, 2026 (JFS) - Year-end tax meetings
November 15, 2026 - Tax return Forms 990 (Non-Profit Organizations) for those that extended by May 15, 2026
December 15, 2026 (JFS) - Requests to prepare Forms 1099, W2, W3 and all year end filings
December 28, 2026 (JFS) - Fourth Quarter Estimated Tax Calculation for the period October 1 to December 31, 2026.
*Note: If the IRS deadline falls on a Saturday, Sunday, or legal holiday, the return, filing or payment will be on time if you make it on the next day that's not a Saturday, Sunday, or legal holiday.