North Dakota Tax Deadlines: Individual & Corporate Filing Guide

North Dakota Tax Deadlines: Individual & Corporate Filing Guide

Check North Dakota tax deadlines for individuals and C Corporations. Confirm due dates, extension rules, and exemptions for S Corps and Partnerships.

North Dakota Tax Deadlines at a Glance (2026)

Entity Type

Return Due

Extension Deadline

Individuals

April 15, 2026

October 15, 2026

C Corporations

April 15, 2026

October 15, 2026

S Corporations

March 16, 2026

September 15, 2026

Partnerships

March 16, 2026

September 15, 2026

Individuals

Applies to residents and nonresidents with North Dakota–source income. Extensions apply to filing only.

Businesses

North Dakota requires composite returns or nonresident withholding for pass-through entities.

Fiscal-Year Entities

Due dates are based on months after year-end, not the calendar year.

‹ Ohio Tax Deadlines: Individual & Corporate Filing Guide

North Carolina Tax Deadlines: Individual & Corporate Filing Guide ›

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Customer Stories

Trusted by firms across the board

"Research used to be a black hole. Now, I just type the question and get a citable IRS answer in seconds."

Tax Manager

Sama Tributa

"80% faster first drafts. What used to take us two days is now done in two hours."

Managing Partner

Northbridge Tax Advisory

Customer Stories

Trusted by firms across the board

"Research used to be a black hole. Now, I just type the question and get a citable IRS answer in seconds."

Tax Manager

Sama Tributa

"80% faster first drafts. What used to take us two days is now done in two hours."

Managing Partner

Northbridge Tax Advisory