511-NR - 2025 Oklahoma Nonresident/Part-Year Resident Tax Packet - Income Tax Forms and Instructions

Sep 19, 2026

2025 Oklahoma individual income tax forms and instructions for nonresidents and part-year residents, covering how to complete the 511-NR income tax return, associated schedules, and required reporting. Guidance includes filing requirements and who must file, definitions of residency and taxation treatment, due date rules (generally April 15, 2026), extension and amended return timing, and refund-related procedures. The packet also provides tax tables, direct deposit and payment instructions, and contact information for assistance.

LanguageEnglish

CategoryForms

FormatPDF

Pages52

Reading Time18 min

AccessFree to download

Resident Defined

How Nonresident and Part-year Residents are Taxed

Who Must File?

Nonresident Spouse of United States Military Member

Estimated Income Tax

What is Oklahoma Source Income?

Due Date

Not Required to File

What is an Extension?

Net Operating Loss

When to File an Amended Return

All About Refunds

Top of Form Instructions

Schedule 511-NR-1 Instructions

Form 511-NR: Select Line Instructions

Schedule 511-NR-A Instructions

Schedule 511-NR-B Instructions

Schedule 511-NR-C Instructions

Schedule 511-NR-D Instructions

Schedule 511-NR-E Instructions

Schedule 511-NR-F Instructions

Schedule 511-NR-G Instructions

Schedule 511-NR-H Instructions

When You Are Finished

Tax Table

Direct Deposit Information

Contact Information and Assistance

2025 Oklahoma Individual Income Tax Forms and Instructions for Nonresidents and Part-Year Residents This packet contains: • Instructions for Completing the 511-NR Income Tax Return • Oklahoma Nonresident and Part-Year Resident Income Tax Return Form 511-NR • 2025 Income Tax Table • This form is also used to file an amended return. See page 7. Filing date: • Generally, your return must be postmarked by April 15, 2026. For additional information, see the “Due Date” section on page 5. Want your refund faster? • See page 44 for direct deposit information. 2025 OKLAHOMA NONRESIDENT/PART-YEAR RESIDENT TAX PACKET TABLE OF CONTENTS Resident Defined ....................................................................................................................................................................3 How Nonresident and Part-year Residents are Taxed ...........................................................................................................3 Who Must File?.......................................................................................................................................................................4 Nonresident Spouse of United States Military Member..........................................................................................................4 Estimated Income Tax ............................................................................................................................................................4 What is Oklahoma Source Income? .......................................................................................................................................5 Due Date ................................................................................................................................................................................5 Not Required to File ...............................................................................................................................................................6 What is an Extension? ............................................................................................................................................................6 Net Operating Loss ................................................................................................................................................................6 When to File an Amended Return ......................................................................................................................................... 7 All About Refunds .................................................................................................................................................................. 7 Top of Form Instructions ....................................................................................................................................................8-10 Schedule 511-NR-1 Instructions ...................................................................................................................................... 10-12 Form 511-NR: Select Line Instructions ........................................................................................................................... 13-19 Schedule 511-NR-A Instructions...................................................................................................................................... 19-21 Schedule 511-NR-B Instructions .....................................................................................................................................21-25 Schedule 511-NR-C Instructions .....................................................................................................................................25-28 Schedule 511-NR-D Instructions ..................................................................................................................................

FAQs

Who is this packet for?

This packet is for nonresidents and part-year residents filing Oklahoma individual income taxes using Form 511-NR.

When must the 511-NR return be filed?

Generally, the return must be postmarked by April 15, 2026, with additional due date details provided in the packet’s “Due Date” section.

How can taxpayers get their refund faster?

The packet directs filers to the direct deposit information section (page 44) for faster refund processing.

Sep 19, 2026

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