Entrepreneurs in North Dakota: taxes and retirement for 2026
For solo founders and small-business owners in North Dakota. North Dakota has a graduated state income tax for 2026: 0% to 2.5% (top rate starts at $250,400 for single filers). Here are the 2026 rules, a worked example and the official sources.
North Dakota rules for entrepreneurs
- State income tax (2026)
- North Dakota has a graduated state income tax for 2026: 0% to 2.5% (top rate starts at $250,400 for single filers). 2026 single schedule: 0% on taxable income up to $49,575; 1.95% from $49,575 to $250,400; 2.5% above $250,400. Married filing jointly: 0% to $82,800; 1.95% to $304,850; 2.5% above. Brackets are indexed each year.
- State estimated tax
- You must pay estimated tax for 2026 only if all four conditions apply: (1) you must pay federal estimated tax; (2) your 2025 North Dakota net tax liability was $1,000 or more; (3) you expect to owe $1,000 or more for 2026 after withholding; (4) your expected withholding is below the smaller of 90% of 2026 liability or 100% of 2025 liability. Same dates as federal, 25% each (April 15, June 15, September 15, 2026 and January 15, 2027). Qualified farmers may instead pay in full by January 15, 2027. Underpayment interest is 12% per year. Form ND-1ES.
- Independent contractor verification (N.D.C.C. 34-05-01.4)
- A person starting or doing independent contractor work can ask the Department of Labor and Human Rights to verify that status. If the facts support independent contractor status under the common-law test, the department issues a determination and an ID number that becomes invalid if the job changes. The department's guidance describes a 20-factor test focused on control (https://www.nd.gov/labor/what-independent-contractor).
- Workers' compensation presumption of employment (N.D.C.C. 65-01-03)
- For Workforce Safety and Insurance purposes, anyone who performs services for pay is presumed an employee. The party claiming independent contractor status must prove it under the common-law test.
Federal rules for 2026
Entity choice changes your taxes
A single-member LLC is taxed like a sole proprietorship unless it elects S-corp status. The S-corp can lower payroll tax but adds payroll, a separate return and a reasonable-salary requirement.
Retirement as a tax lever
With no employees, a Solo 401(k) allows up to $72,000 in 2026. With employees, a SEP IRA or a 401(k) must generally cover eligible staff too.
Quarterly estimated taxes
No one withholds tax from self-employment income, so you generally pay estimates four times a year if you expect to owe $1,000 or more. For 2026 income the federal dates are April 15, June 15 and September 15, 2026, and January 15, 2027. Paying 100% of last year's tax (110% if your AGI was over $150,000) in four equal installments avoids the underpayment penalty.
Self-employment tax
On top of income tax, self-employed people pay 15.3% on 92.35% of net profit: 12.4% Social Security up to the 2026 wage base of $184,500, plus 2.9% Medicare with no cap. Half of it is deductible.
A worked example
| Self-employment tax as a sole proprietor | $28,234 |
|---|---|
| Solo 401(k) maximum as a sole proprietor | $61,677 |
| Payroll tax saved as an S-corp on a $100,000 salary | $12,934 |
| Solo 401(k) maximum as that S-corp | $49,500 |
Federal figures only. S-corps add running costs (payroll, an 1120-S return, state fees) not shown here. Computed from 2026 IRS limits (Notice 2025-67, Rev. Proc. 2025-32) and the SSA wage base.
Free tools
Guides by job and platform
Questions
Do entrepreneurs in North Dakota pay state income tax?
North Dakota has a graduated state income tax for 2026: 0% to 2.5% (top rate starts at $250,400 for single filers). 2026 single schedule: 0% on taxable income up to $49,575; 1.95% from $49,575 to $250,400; 2.5% above $250,400. Married filing jointly: 0% to $82,800; 1.95% to $304,850; 2.5% above. Brackets are indexed each year.
When are North Dakota estimated tax payments due for 2026?
You must pay estimated tax for 2026 only if all four conditions apply: (1) you must pay federal estimated tax; (2) your 2025 North Dakota net tax liability was $1,000 or more; (3) you expect to owe $1,000 or more for 2026 after withholding; (4) your expected withholding is below the smaller of 90% of 2026 liability or 100% of 2025 liability. Same dates as federal, 25% each (April 15, June 15, September 15, 2026 and January 15, 2027). Qualified farmers may instead pay in full by January 15, 2027. Underpayment interest is 12% per year. The state form is ND-1ES.
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Sources
- www.tax.nd.gov/sites/www/files/documents/forms/individual/2025-iit/28709-form-nd-1es-2026.pdf
- www.nd.gov/labor/sites/www/files/documents/Min%20Wage%20Poster%20-%20Be%20Legenday%20Logo.pdf
- ndlegis.gov/cencode/t34c05.pdf
- ndlegis.gov/cencode/t65c01.pdf
State and local facts researched from official sources and independently re-checked; last verified October 2026, next scheduled review 2027-01-02. Educational information for 2026, not tax, legal or investment advice. Rules change; check the official sources listed and a tax professional for your situation. Gigaverse AI, Inc. is a financial technology company, not a bank, and not itself a registered investment adviser or broker-dealer.