2025 Important Dates/Deadlines
(2026 Calendar Year)
Though our office thinks about taxes year-round, we know that you don’t! Below is the calendar of both the IRS’ and our office’s deadlines. If you have any questions, please contact us.
| Date | Description |
| Jan. 15, 2026 | Fourth Quarter Estimated Payments for 2025 are due. |
| Feb. 16, 2026 | Last day for returning clients to turn in most of your individual tax return documents to receive a 10% discount, up to $100 off the final price. |
| Mar. 9, 2026 | Documents received after this date will be prepared after the April 15th deadline. |
| Mar. 16, 2026 | IRS filing deadline for Partnership (1065) and S-Corporation (1120-S) returns or extensions. |
| April 15, 2026 | IRS filing deadline for Individual, Estate, Trust, and C-Corporation returns or extensions. |
| April 15, 2026 | Quarter 1 Estimated Payments for 2026 are due. |
| May 15, 2026 | Texas franchise returns or extensions are due. |
| June 15, 2026 | Second Quarter Estimated Payments for 2026 are due. |
| July 15, 2026 | Last day for Partnerships (1065) and S-Corporations (1120-S) with extensions to provide their documents for the extension deadline. If your documents are received after this day, you will incur a rush fee up to 30% of the final return fee. |
| Aug. 17, 2026 | Last day for Individual, Estate, and Trust returns with extensions to provide their documents for the extension deadline. If your documents are received after this day, you will incur a rush fee up to 30% of the final return fee. |
| Sept. 15, 2026 | Third Quarter Estimated Payments for 2026 are due. |
| Sept. 15, 2026 | IRS filing deadline for extended Partnership and S-Corporation returns. |
| Sept. 30, 2026 | IRS filing deadline for extended Estate and Trust returns. |
| Oct. 15, 2026 | IRS filing deadline for extended Individual and C-Corporation returns. |
| Nov. 2, 2026 | Last day to turn in documents for a prior year return (anything before 2025) to be done before the end of 2025. Any prior year returns not brought in by this date will not be worked on until the end of the spring filing season (May). |
| Nov. 16, 2026 | Extended Texas franchise returns are due. |
Contact us for more information!
Privacy Policy: The privacy of your client information has always been important to J. Marc Lewis & Associates, LLC, and we have always been bound by professional standards of confidentiality. However, we are now required by law to formally inform you of our privacy policy.
We collect nonpublic personal information about you that is provided by you or obtained by J. Marc Lewis & Associates, LLC with your authorization. This information may come from various sources, including information we receive from personal interviews, tax organizers, worksheets and other documents necessary to provide professional services to you. J. Marc Lewis & Associates, LLC does not disclose any nonpublic personal information about their clients or former clients to anyone, except as permitted or required by law, or when necessary to process transactions requested by a client. J. Marc Lewis & Associates, LLC restricts access to nonpublic personal information about you to members of our firm who need to know that information in order to provide you professional services. We retain records relating to the professional services that we provide you in accordance with accounting and government standards. J. Marc Lewis & Associates, LLC employs physical, electronic, and procedural security safeguards to protect your nonpublic personal information.
Your confidence and trust are important to us. If you have any questions or concerns regarding the privacy of your nonpublic personal information, please contact our office during normal business hours.