Nonprofit Tax Deadlines in Delaware
Federal and state filing dates, extensions, and estimate schedules for 2026.
Delaware filing deadline
Nonprofit annual return generally due the 15th day of the 5th month.
Due: May 15, 2026
Extension: Nov 15, 2026
Form: State nonprofit return
Estimated payments
No state estimated payment schedule listed.
Due: N/A
FAQ
Does Delaware require Nonprofit estimated payments?
Estimated payments are not typically required at the entity level, but confirm with Delaware Division of Revenue.
Where can I file Delaware Nonprofit taxes?
Use Delaware Division of Revenue resources at https://revenue.delaware.gov for forms and filing instructions.