AR — ArkansasArkansas Personal Income Tax Extension — What You Need to Do
Arkansas extends your personal income tax filing deadline to November 15, 2026 — but the extension is not fully automatic. You qualify automatically if you already have a federal extension (IRS Form 4868). If you don’t file federally, you must file Arkansas Form AR1055-IT by April 15. Either way, any Arkansas tax you owe is still due April 15.
Arkansas Extension Checklist — 2026
Three things to handle. One deadline that drives them all.
Secure Your Extension
File a federal extension (IRS Form 4868) and Arkansas automatically extends your state deadline to November 15 — no separate state form needed. If you won’t file federally, submit Arkansas Form AR1055-IT by April 15 instead.
Pay Any Arkansas Tax You Owe
Arkansas’s extension covers filing — not payment. Pay as much as possible by April 15 to stop the 1%-per-month late-payment penalty and 10% annual interest.
Check with Form AR1055-IT Individual Income Tax Section
ATTN: Extension
P.O. Box 8149
Little Rock, AR 72203-8149
File Federal + Arkansas Return
File your federal return and add your Arkansas return — Form AR1000F (residents) or AR1000NR (nonresidents / part-year) — in the same session. Filing sooner means a faster refund. Your extended Arkansas deadline is November 15.
Start Federal + Arkansas Return →
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Arkansas Late Penalties — What It Costs to Wait
A valid extension gives you until November 15 to file. But unpaid tax starts accruing penalties and interest the day after April 15.
| Penalty Type | Rate | Cap | Trigger |
|---|---|---|---|
| Failure to Pay | 1% per month | 35% | Unpaid balance after April 15 |
| Failure to File | 5% per month | 35% | Filing after Nov 15 without a valid extension |
| Combined Cap | — | 35% | File + pay penalties combined cannot exceed 35% |
| Interest | 10% per year | No cap | Accrues from April 15 on any unpaid balance |
Arkansas State Extension Details
| Extension Type | Federal Required — or AR1055-IT |
| Original Filing Deadline | April 15, 2026 |
| Extended Filing Deadline | November 15, 2026 |
| Extension Period | 7 months |
| Extension Form | None with federal Form 4868; otherwise AR1055-IT (by April 15) |
| Return Form | AR1000F (resident) / AR1000NR (nonresident, part-year) |
| Federal Extension Required? | A federal 4868 auto-extends Arkansas; state-only via AR1055-IT |
| Payment Deadline | April 15, 2026 (extension does not extend payment) |
| Online Payment Portal | atap.arkansas.gov |
| State Agency | Arkansas Department of Finance and Administration |
| Failure to File Penalty | 5% per month, up to 35% |
| Failure to Pay Penalty | 1% per month, up to 35% (combined cap 35%) |
Arkansas Tax Extension — Frequently Asked Questions
Do I need to do anything to get the Arkansas extension?
Yes. Arkansas is not a no-action state. If you file a federal extension (IRS Form 4868), Arkansas automatically extends your deadline to November 15, 2026. If you don’t, you must file Form AR1055-IT by April 15.
What is Form AR1055-IT?
It’s Arkansas’s individual income tax extension request. File it by April 15 only if you are not obtaining a federal extension — a federal 4868 already covers you at the state level.
Does the Arkansas extension cover my federal return?
No. An Arkansas extension only covers your state return. For more time on your federal return, file IRS Form 4868 — which conveniently also triggers your automatic Arkansas extension.
What if I can’t pay my full Arkansas tax by April 15?
Pay as much as you can. The 1%-per-month failure-to-pay penalty and 10% annual interest are calculated on the unpaid balance, so every dollar paid by April 15 lowers your total.
Which Arkansas return form do I need?
Form AR1000F is for full-year residents. Form AR1000NR is for nonresidents and part-year residents. Both are due by the extended deadline of November 15, 2026.
How do I pay my Arkansas extension tax online for free?
Use ACH debit at atap.arkansas.gov (the Arkansas Taxpayer Access Point) — it’s free and instant. Credit and debit card payments are available via ACI Payments at acipayonline.com, though a service fee applies.
Ready to File? Start Federal + Arkansas
File your federal return and add Arkansas state in the same session. November 15 extended deadline — secure, fast, with live support.