The due date for the calendar year 2025 return is on or before March 16, 2026.
Fiscal years: for fiscal years beginning in 2025, file on or before the 15th day of the 3rd month following the close of the fiscal year.
Schedule G: all taxpayers must complete Schedule G, Parts 1 and 2.
Schedule H: taxpayers must report their Business Allocation Percentage in this schedule for this return to be accepted.
Remittance: make remittance payable to the order of NYC Department of Finance.
| Question | Answer |
|---|---|
| Form Name | Form NYC-3L |
| Form Length | 7 pages |
| Fillable? | No |
| Fillable fields | 0 |
| Avg. time to fill out | 21 min |
| Edition | 2025 |
| Filing deadline | On or before March 16, 2026 for the calendar year 2025 return |
| Where to file | All returns except refund returns: NYC Department of Finance, General Corporation Tax, P.O. Box 5564, Binghamton, NY 13902-5564 |
| Matches the agency's file | Yes, checked October 2, 2026 |
| Other names | NYC-3L, NYC 3L, NYC3L, Form NYC-3L, NYC-3L instructions, General Corporation Tax Return |
| Official source | Form NYC-3L (Rev 2025), NYC Department of Finance |
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