Oklahoma Business Taxes: 4% Corporate, 4.5% Top Individual Rate, 4.5% State Sales Tax and Due Dates
Oklahoma taxes businesses through a short list of taxes: a flat 4% corporate income tax, a graduated individual income tax with a 4.5% top rate for 2026, a 4.5% state sales tax that cities and counties add to, and withholding for employers. The franchise tax no longer applies. If you are weighing oklahoma llc taxes, the oklahoma pass through entity tax, or the broader oklahoma business taxes picture, this guide puts the rates, forms, deadlines and penalties in one place.
Informational content, not legal or tax advice. This guide describes Oklahoma business tax rules as of October 29, 2026. Rates, brackets, deadlines and forms change, and some figures below are marked for confirmation. Check current numbers with the Oklahoma Tax Commission (OTC) and consult a qualified CPA or tax attorney before you file, especially if your business has multiple owners, operates in more than one state, or is owned by a tribal nation or involves federal contracts.
Oklahoma Business Tax Quick Reference
| Tax or fee | Amount | Who pays or files | Agency |
|---|---|---|---|
| Corporate income tax | 4% flat | C corporations | Oklahoma Tax Commission |
| Franchise tax | None for tax year 2024 and later | Not applicable | Repealed after tax year 2023 |
| Individual income tax | Top rate 4.5% for 2026 | Owners, sole proprietors and pass-through owners | Oklahoma Tax Commission |
| State sales tax | 4.5% plus local sales tax | Sellers, who collect from buyers | Oklahoma Tax Commission (OkTAP) |
| Sales tax permit | $20 for 3 years | Sellers | Oklahoma Tax Commission (OkTAP) |
| LLC Articles of Organization | $100 | New LLCs | Secretary of State |
| LLC annual certificate | $25 | LLCs | Secretary of State |
| Trade Name Report | $25 to file, amend, transfer or withdraw | Businesses using a trade name | Secretary of State |
| Foreign corporation registered agent fee | $100 per year, due July 1 | Foreign corporations (Form 200-R) | Oklahoma Tax Commission |
Corporate Income Tax
Oklahoma taxes C corporation income at a flat 4% for tax years beginning after December 31, 2021 (68 O.S. 2355(H)). Domestic C corporations file Form 512. The state franchise tax ended after tax year 2023 under HB 1039, so a corporation owes nothing under that tax for tax year 2024 or later. If someone quotes you a franchise tax bill for a recent year, ask them for the statute they are relying on.
Domestic for-profit corporations do not file an annual report with the Secretary of State. Foreign corporations, meaning corporations formed in another state that are registered to do business here, pay a $100 annual registered agent fee to the OTC by July 1 on Form 200-R.
Corporations suspended for tax year 2023 or earlier stay suspended until they are reinstated. Reinstatement costs a one-time $150.
Individual Income Tax and Owners of Pass-Through Entities
Oklahoma uses graduated individual rates. For 2026 the top rate is 4.5%. A single filer pays 0% on the first $3,750 of taxable income, then 2.5%, 3.5% and 4.5% on the higher bands. Joint brackets are roughly double the single amounts, but confirm the exact joint figures with the OTC. The top rate can fall by 0.25 percentage points at a time if the state revenue trigger is certified, so check the current bands before you estimate your tax.
Sole proprietors and many single-owner LLCs report business income on the owner's individual return. Partnerships and S corporations file their own entity returns and pass income through to their owners. Your LLC's federal tax classification controls which Oklahoma return applies, so confirm that classification with your CPA before you file.
The Oklahoma Pass Through Entity Tax Election
The oklahoma pass through entity tax is an optional election, not an automatic charge. A partnership or S corporation can elect on Form 586 to pay Oklahoma tax at the entity level rather than having each owner pay it on a personal return. The OTC sets the eligibility rules, the tax computation and the election timing, and this guide does not state a rate for the election. Confirm all three with the OTC before you file Form 586.
Whether the election helps depends on each owner's individual situation, including their other income and deductions. Run the numbers with a CPA before you make the election, because it is not a simple switch.
Self-Employment Tax
Self-employment tax is a federal tax, not an Oklahoma one. It applies to sole proprietors and to LLC members who owe self-employment tax on their share of earnings. For 2026 the wage base is $184,500, which is the income level above which the Social Security portion of the tax stops applying.
Oklahoma Sales Tax
The Oklahoma state sales tax rate is 4.5%. Cities and counties add their own sales taxes, and the OTC collects the state, city and county taxes together on one return. Combined rates run from about 8.25% to above 10%, depending on where the sale takes place.
Before you make taxable sales, register for a sales tax permit through OkTAP at oktap.tax.ok.gov. The permit costs $20 for three years.
Since August 29, 2024, the state rate does not apply to most food and food ingredients. Local sales taxes still apply to many of those same items, so check the local rate on any grocery or food product you sell.
Out-of-state sellers face a $100,000 threshold for Oklahoma sales. Oklahoma does not use a 200-transaction test. Confirm how the threshold applies to your sales with the OTC before you assume you are below it.
Filing Deadlines and Penalties
| Return or payment | Due date |
|---|---|
| Individual calendar-year return, paper filed | April 15 |
| Individual calendar-year return, e-filed | April 20 |
| Partnership, S corporation and calendar-year C corporation returns | 30 days after the federal due date |
| Estimated tax payments | Required when you expect to owe $500 or more beyond withholding; check the OTC for installment dates |
Under 68 O.S. 217, late payments carry a penalty of 10% plus interest at 1.25% per month. The penalty applies after 15 days late for sales, use and similar taxes, and after 30 days late for other taxes. Sales tax is the one most small businesses miss, so calendar your monthly or periodic sales tax filing dates from the day you receive your permit.
Forms You May File
- Form 512: Oklahoma corporation income tax return
- Form 512S: S corporation return
- Form 514: partnership return
- Form 586: pass-through entity tax election
- Form WTP-10003: nonresident withholding
- Form 200-R: foreign corporation registered agent fee
Whether a given form applies to your business depends on its entity type, its owners and its tax activity. Confirm the right form in OkTAP or with the OTC before you file.
LLC and Corporate Filing Fees
These fees are paid to the Oklahoma Secretary of State rather than the OTC. They are not taxes, but they are recurring costs owners often overlook.
- Articles of Organization: $100 to form an LLC.
- LLC annual certificate: $25, due on the anniversary of the Articles of Organization filing, with a 60-day grace period. The statute sets no late fee, but an LLC that misses the 60 days stops being in good standing. Reinstatement has no fee of its own, but you must file every delinquent annual certificate.
- Name reservation: $10 to hold a name for 60 days, through the Secretary of State name availability page.
- Trade Name Report: $25 to file, amend, transfer or withdraw. This is a state filing with the Secretary of State, not a county filing, and no newspaper publication is required. General partnerships file a Certificate of Partnership Fictitious Name for $50.
- Registered agent change: $25 to change the agent or office.
- Secretary of State annual agent fee: The Secretary of State fee list shows a $40 annual agent fee that applies where the Secretary of State acts as the LLC's registered agent. Check with the Secretary of State whether it applies to your LLC.
Licenses Outside the Tax System
Oklahoma has no general state business license. A business forms its entity with the Secretary of State, registers with the OTC through OkTAP if it collects sales tax or withholds income tax from employees, and then adds any licenses and permits its activity requires from the state, its city or its county.
Cities are where local licensing gets confusing. Oklahoma City and Tulsa issue no general city business license. A minority of cities do charge a general or occupational license, including Bartlesville, Yukon, Sapulpa, Bixby, Tahlequah and Mustang. Oklahoma City, Tulsa and Lawton license only specific activities. Cities separately license activities such as contractors, alcohol sales, mobile food vendors and short-term rentals, so check the rules in the city where you will operate.
Counties issue no business licenses. Only Oklahoma County and Tulsa County run zoning and building permits in unincorporated areas. Regulated trades and professions are licensed by state boards, so check the board for your specific trade before you open.
Federal Reporting and Tribal Businesses
FinCEN's final rule on beneficial ownership reporting, effective August 14, 2026, exempts U.S. companies, so no U.S. company needs to file a beneficial ownership report under that rule.
If your business is owned or operated by a tribal nation or operates in Indian Country, tribal and federal rules may change which Oklahoma taxes apply to you. Do not assume the state rules in this guide control your situation. Review the tribal business guidance on this site and confirm the answer with a tax professional who works in that area.
Official Oklahoma Resources
- Oklahoma Tax Commission: rates, forms and deadlines
- OkTAP business registration: sales tax permit and withholding registration
- Oklahoma Secretary of State, Business Filing Department: LLC, corporation and trade name filings
- Secretary of State business search: check whether a name is already on file
- Oklahoma Small Business Development Center network: free or low-cost advising
- SBA Oklahoma district: federal small business resources for the state
Oklahoma's tax rules are straightforward compared with many states, but the details of your entity type, your sales footprint and your owners' situations decide what you owe. Confirm current figures with the OTC, and work with a CPA or tax attorney before you file, especially for a pass-through election, multistate sales or tribal activity.