Business return due dates by form number (calendar year filers)
| March 15, 2023 | April 18, 2023 |
|---|---|
| Form 1120-S | Form 1041 (estate other than a bankruptcy estate) |
| Form 1042 | Form 1041(Trust) |
| Form 1065 | Form 1041 (bankruptcy estate only) |
| Form 1065-B | Form 1120 |
| Form 3520-A | Form 1120-F |
| Form 8612 | Form 1120-FSC |
| Form 8613 | Form 1120-H |
| Form 8804 | Form 1120-L |
| Form 1066 | Form 1120-ND |
| Form 1120-ND (Section 4951 taxes) | |
| Form 1120-PC | |
| Form 1120-POL | |
| Form 1120-REIT | |
| Form 1120-RIC | |
| Form 1120-SF | |
| Form 706-GS (D) | |
| Form 706-GS (T) | |
| Form 1041-N | |
| Form 1041-QFT | |
| Form 1066 | |
| Form 8831 | |
| Form 8928 |
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