Filing Deadlines for Tax Year 2025
Note these important 2026 preparation and filing deadline dates for taxable year 2025 returns.
If you have any questions about this schedule, please call our office at 610-770-9236 for clarification.
| Due Date | Form | Return Type |
| Jan 15, 2026 | 4th Qtr | Individual Estimated Tax Payment for Tax Year 2025 |
| Feb 2, 2026 | 1099 | 1099 Income (Misc, DIV, INT, R) |
| W-2 | W-2 Wages | |
| Mar 1, 2026 | Werner & Co. | TAX PREP SUBMISSION deadline to meet April 15th filing deadlines |
| Mar 16, 2026 | 1065 | Partnership Return |
| 1120S | S-Corporation Return | |
| 3520-A | Foreign Trusts Return | |
| Apr 15, 2026 | 1041 | Trust and Estate Return |
| 1120 | C-Corporation Return | |
| 1040 | Individual Return | |
| 114 | FinCEN Report 114 | |
| 1st Qtr | Individual Estimated Tax Payment for Tax Year 2026 | |
| May 15, 2026 | 990 | Exempt Organizations Return |
| Jun 15, 2026 | 2nd Qtr | Individual Estimated Tax Payment for Tax Year 2026 |
| Jun 30, 2026 | PA Annual Filing | Corporations |
| Aug 3, 2026 | Werner & Co. | TAX PREP SUBMISSION deadline to meet Sept 16th and Oct 15th filing deadlines for business and individual IRS extensions |
| Sep 15, 2026 | 1065 | Partnership Extended Return |
| 1120S | S-Corporation Extended Return | |
| 3520-A | Foreign Trusts Extended Return | |
| 3rd Qtr | Individual Estimated Tax Payment for Tax Year 2026 | |
| Sep 30, 2026 | 1041 | Trust and Estate Extended Return |
| PA Annual Filing | Partnerships, LLCs, LPs, Trusts | |
| Oct 15, 2026 | 1040 | Individual Extended Return |
| 1120 | C-Corporation Extended Return | |
| 114 | FinCEN Report 114 | |
| Nov 16, 2026 | 990 | Exempt Organizations Extended Return |
| Jan 15, 2027 | 4th Qtr | Individual Estimated Tax Payment for Tax Year 2026 |
Learn more about how Werner & Co. can help meet your tax compliance needs and other expert, tailored services. Send us an email or call us today at 610-770-9236 to discuss your accounting and business consulting needs and the many advantages of Werner Cloud+.
