Oklahoma: what each business structure costs a year

At $100,000 profit, an S corporation costs $4,779 a year less than a sole proprietorship in Oklahoma. All figures are 2026 tax and fees.

$4,779 a year

less as an S corporation than as a sole proprietorship in Oklahoma, at these numbers. That includes the state's pass-through entity tax election.

Oklahoma, 2026: $100,000 profit, single filer

Structure

Yearly cost

vs yours

To set up

Sole proprietorship yours

$26,002

Itemized: $26,002

Self-employment taxirs.gov, 2026 rates	$14,130
Federal income taxirs.gov, 2026 rates	$8,235
State income taxoklahoma.gov, checked Oct 20, 2026	$3,637
Yearly cost	$26,002

Single-member LLC

$26,018

+$16

$100

Itemized: $26,018

Annual Certificatesos.ok.gov, checked Oct 20, 2026	$25
Self-employment taxirs.gov, 2026 rates	$14,126
Federal income taxirs.gov, 2026 rates	$8,231
State income taxoklahoma.gov, checked Oct 20, 2026	$3,636
Yearly cost	$26,018

LLC taxed as an S corp

$21,242

−$4,760

$100

Itemized: $21,242

Annual Certificatesos.ok.gov, checked Oct 20, 2026	$25
Payroll tax on your salaryirs.gov, 2026 rates	$6,537
Payroll service and tax return (estimate)	$1,800
Oklahoma pass-through entity tax, paid by the company (elected)legalclarity.org, checked Oct 20, 2026	$2,461
Federal income taxirs.gov, 2026 rates	$9,164
State income tax, after the PTET exclusionoklahoma.gov, checked Oct 20, 2026	$1,255
Yearly cost	$21,242

S corporation lowest

$21,223

−$4,779

$50

Itemized: $21,223

Payroll tax on your salaryirs.gov, 2026 rates	$6,537
Payroll service and tax return (estimate)	$1,800
Oklahoma pass-through entity tax, paid by the company (elected)legalclarity.org, checked Oct 20, 2026	$2,463
Federal income taxirs.gov, 2026 rates	$9,168
State income tax, after the PTET exclusionoklahoma.gov, checked Oct 20, 2026	$1,255
Yearly cost	$21,223

C corporation

$29,815

+$3,813

$50

Itemized: $29,815

Payroll tax on your salaryirs.gov, 2026 rates	$6,537
Payroll service and tax return (estimate)	$2,000
State corporate income taxoklahoma.gov, checked Oct 20, 2026	$2,181
Federal corporate income tax (21%)irs.gov, 2026 rates	$10,992
Federal income taxirs.gov, 2026 rates	$4,990
State income taxoklahoma.gov, checked Oct 20, 2026	$3,115
Yearly cost	$29,815

What these figures count

State income tax, and state taxes on the business itself: franchise, LLC, S corp, gross receipts and excise taxes.
Social Security and Medicare on both sides of an owner salary, federal unemployment tax and the state's new-employer rate.
The 20% qualified business income deduction with its income limits and the professional-service rule.
Yearly report fees, and a cost you can change for payroll and the business tax return.

Many S corp calculators leave out state taxes and the QBI deduction, which can make the election look better than it is.

When an S corp election pays in Oklahoma

Electing S corp tax treatment for an LLC starts to pay in Oklahoma at about $50,000 of profit, with the default salary and $1,800 a year for payroll and the extra tax return.

An S corp in Oklahoma can elect to pay the state's income tax itself, a pass-through entity tax of 4.5%, and the owner gets that income left out of the personal return. The company deducts it on the federal return, so it is not held to the SALT cap. The calculator uses it when it lowers the totallegalclarity.org.

Profit	Sole prop	LLC	LLC as S corp	C corp
$30,000	$5,890	$5,909	$7,459	$7,884
$50,000	$11,278	$11,296	$11,171	$13,447
$75,000	$18,086	$18,105	$14,588	$20,340
$100,000	$26,002	$26,018	$21,242	$29,815
$150,000	$43,335	$43,352	$35,704	$50,264
$200,000	$61,249	$61,269	$50,965	$69,896
$300,000	$104,384	$104,392	$83,961	$110,606

Single filer, no other income, revenue taken as 1.5 times profit, default salary. The lowest cost in each row is marked.

State fees and taxes in Oklahoma

	LLC	Corporation
Filing to form	$100Articles of Organization	$50Certificate of Incorporation	sos.ok.gov
Yearly report	Annual Certificate, $25 a year	No yearly report fee	sos.ok.gov
Report due	Anniversary of the formation date	n/a

Oklahoma taxes personal income in 4 brackets, from 0% to 4.5% (2026, single filer). oklahoma.gov
C corporations pay 4% of net income. oklahoma.gov
Oklahoma follows the federal S corp election.
New employers pay state unemployment tax of 1.5% on the first $25,000 of each employee's wages. That applies to an owner's salary from an S or C corp. oklahoma.gov
A $40 annual agent fee applies only if the Secretary of State serves as registered agent. Credit card payments add 4%.
Fee is 0.1% of authorized capital, minimum $50 (covers capital up to $50,000). The annual franchise tax return ended after tax year 2023. The annual certificate in 18 OS 1142 applies only to foreign corporations.

Not in the calculator: No local income taxes in Oklahoma. Cities and counties add local sales taxes, not modelled.

Switching calculators for Oklahoma

By profession in Oklahoma

Questions

Is an S corp worth it in Oklahoma?

On these figures, from about $50,000 of profit. At $100,000 an LLC taxed as an S corp costs $21,242 a year against $26,018 for a plain LLC, $4,776 less. The saving comes from paying Social Security and Medicare tax on a salary instead of on all profit.

How much does an LLC cost per year in Oklahoma?

The state charges Annual Certificate, $25 a year. Forming one costs $100.

Does Oklahoma recognise the S corp election?

Yes. The federal election carries over with no separate state form. No entity-level tax on S corps or LLCs. An elective pass-through entity tax exists. Withholding applies to nonresident owners.

What income tax does Oklahoma charge?

Oklahoma taxes personal income in 4 brackets, from 0% to 4.5% (2026, single filer). C corporations pay 4% of net income.

Sources checked 2026-10-20. Each figure links to the state or IRS page it comes from.

Other states