Form library
One row per form the firm ever files, and what each is generally due, firm-wide. A project’s own filing obligations carry their own dates and extensions. Read from the IRS tax calendar for 2026.
Read from the IRS tax calendar on 9 Apr 2026
6 forms · 2 clients covered
| Form | Filer | Due date | Extension due | Projects |
|---|---|---|---|---|
Mar 20262 items | ||||
| Form 1065IRS calendar | Partnerships | 16 Mar 2026 | 15 Sept 2026 | 0 |
| Form 1120SIRS calendar | S Corp | 16 Mar 2026 | 15 Sept 2026 | 0 |
Apr 20263 items | ||||
| Form 1040IRS calendar | Individuals | 15 Apr 2026 | 15 Oct 2026 | 1Marisol and Dean Hartley |
| Form 1041IRS calendar | Estates and Trusts | 15 Apr 2026 | None stated | 0 |
| Form 1120IRS calendar | Corporations | 15 Apr 2026 | 15 Oct 2026 | 0 |
May 20261 item | ||||
| Form 990IRS calendar | Any filer | 15 May 2026 | None stated | 1Trellis Academy |