StructureCost2026

LLC vs C corp in Oklahoma: which costs less (2026)

At $100,000 profit in Oklahoma, a single-member LLC costs $26,018 a year in tax and fees and a C corporation costs $29,815. On these figures a C corporation does not cost less at any profit up to $500,000.

More settings revenue, salary, filing status, payroll costs, PTET

+$3,797 a year

more for a C corporation than a single-member LLC in Oklahoma, at these numbers.

With these settings the switch does not pay at any profit from $10,000 to $500,000.

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

ItemLLCC corpChange
Annual Certificatesos.ok.gov, checked Oct 20, 2026$25$0−$25
Self-employment taxirs.gov, 2026 rates$14,126$0−$14,126
Federal income taxirs.gov, 2026 rates$8,231$4,990−$3,241
State income taxoklahoma.gov, checked Oct 20, 2026$3,636$3,115−$521
Payroll tax on your salaryirs.gov, 2026 rates$0$6,537+$6,537
Payroll service and tax return (estimate)$0$2,000+$2,000
State corporate income taxoklahoma.gov, checked Oct 20, 2026$0$2,181+$2,181
Federal corporate income tax (21%)irs.gov, 2026 rates$0$10,992+$10,992
Yearly cost$26,018$29,815+$3,797
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.

Yearly cost at each profit level

ProfitLLCC corpDifference
$30,000$5,909$7,884+$1,975
$50,000$11,296$13,447+$2,151
$75,000$18,105$20,340+$2,235
$100,000$26,018$29,815+$3,797
$150,000$43,352$50,264+$6,912
$200,000$61,269$69,896+$8,627
$300,000$104,392$110,606+$6,214

Federal and Oklahoma tax and fees, single filer, revenue 1.5 times profit, default salary for S and C corps. "Difference" is C corporation minus Single-member LLC.

What the switch takes in Oklahoma

  1. Either convert the LLC to a corporation under state law, or keep the LLC and elect corporate tax treatment with IRS Form 8832.
  2. Register with Oklahoma as an employer and run payroll for your own salary: federal Forms 941 each quarter, Form 940 and a W-2 each year. New employers pay Oklahoma unemployment tax at 1.5% on the first $25,000 of wages. oklahoma.gov See what payroll costs.
  3. Federal return each year: Form 1120, due April 15 for a calendar year.
  4. State upkeep each year: no yearly report fee.

What changes between the two

A C corporation pays 21% federal tax and Oklahoma corporate tax on its profit, and the owner pays tax again on dividends (the double tax). An LLC pays no federal income tax itself: profit lands on the owner's return, where the 20% qualified business income deduction can apply.

The figures assume all C corp profit after tax is paid out as dividends. Profit kept in the company to grow it is taxed only at the corporate rate until it is paid out, which is where a C corp can come out ahead.

Questions

How much does it save at $100,000 in Oklahoma?

Nothing. C corporation costs $3,797 a year more ($29,815 against $26,018).

When does a C corp make sense in Oklahoma?

Mostly when profit stays in the company, when outside investors need one, or for the qualified small business stock exclusion. For an owner who takes the profit out, the second tax on dividends usually costs more. On these figures it never costs less up to $500,000.

More for Oklahoma

Common cases in Oklahoma

Other states