Arkansas Partnership Tax Deadlines 2026

Complete guide to Partnership filing dates, extensions, estimated payment schedules, and required forms in Arkansas for the 2026 tax year. Arkansas imposes a state income tax, so Partnership entities must file both federal and state returns.

Arkansas Partnership filing deadline

Calendar-year due date follows federal timing for pass-through entities.

Passed

Due: Mar 16, 2026

Extension: Sep 15, 2026

Form: State business income tax return

Estimated payments

No state estimated payment schedule listed.

N/A

Due: N/A

Arkansas Partnership Tax Calendar at a Glance

EventDate
Filing deadlineMar 16, 2026
Extension deadlineSep 15, 2026

FAQ

When is the Partnership tax filing deadline in Arkansas for 2026?

The Arkansas Partnership tax return is due Mar 16, 2026 for the 2026 tax year. An extension is available until Sep 15, 2026.

Does Arkansas require Partnership estimated tax payments?

Estimated payments are not typically required at the entity level for Partnership in Arkansas, but confirm with Arkansas Department of Finance and Administration.

What form do I file for a Partnership in Arkansas?

Partnership entities in Arkansas file using Form State business income tax return. You can download the form from Arkansas Department of Finance and Administration at https://www.dfa.arkansas.gov.

Can I get an extension for my Arkansas Partnership tax return?

Yes. Arkansas allows an extension for Partnership returns until Sep 15, 2026. Note that an extension gives you more time to file, not more time to pay — any tax owed is still due by the original deadline of Mar 16, 2026.

What are the penalties for filing late in Arkansas?

Arkansas typically charges a failure-to-file penalty (usually 5% of unpaid tax per month, up to 25%) and a failure-to-pay penalty (usually 0.5-1% per month). Interest also accrues on unpaid balances. Filing for an extension by the original deadline avoids the failure-to-file penalty but not the failure-to-pay penalty.

Where can I file Arkansas Partnership taxes?

File through Arkansas Department of Finance and Administration. Visit https://www.dfa.arkansas.gov for e-filing options, downloadable forms, and payment portals.

Arkansas Estimated Tax Payments

View the full quarterly estimated payment schedule for Arkansas, including all entity types and payment methods.

View Arkansas estimated payments →

Other Entity Types in Arkansas

Partnership Deadlines in Neighboring States