To start a business in Ohio, you file formation paperwork with the Secretary of State for a $99 fee, then handle the federal and state registrations that fit what you’re doing. The state filing itself can be done online in one sitting. The work around it — picking the right structure, clearing your name, registering for the taxes and employer accounts that apply, and checking local zoning — is where new owners spend real time and where skipped steps tend to become expensive later.
Pick a Legal Structure
Your structure sets your personal liability, your tax treatment, and how much paperwork Ohio expects from you. Four options cover most new businesses:
- Sole proprietorship. You and the business are the same legal person. No state formation filing is required, but you carry unlimited personal liability for every debt and lawsuit.
- General partnership. Two or more owners sharing profits, governed by default under Ohio’s Uniform Partnership Act in ORC Chapter 1776. Every partner is personally liable for partnership debts.
- Limited liability company (LLC). A separate legal entity from its owners, called members. Personal assets are generally shielded from business debts, and management is flexible.1Ohio Legislative Service Commission. Ohio Revised Code 1706.01 – Limited Liability Company Definitions
- Corporation. A separate legal entity owned by shareholders and run by a board of directors. Shareholders aren’t personally liable for corporate debts absent a specific written agreement, but corporations carry more governance requirements.2Ohio Legislative Service Commission. Ohio Revised Code Chapter 1701 – General Corporation Law
Most first-time Ohio owners land on an LLC. It pairs liability protection with light administrative overhead. A corporation makes more sense if you plan to raise investment capital by issuing stock. Sole proprietorships and general partnerships work for low-risk side businesses, but the unlimited personal liability is a dealbreaker anywhere lawsuits or significant debts are realistic.
Your state entity type and your federal tax classification are two different decisions. A single-member LLC is a “disregarded entity” by default and reports on your personal return; a multi-member LLC defaults to partnership taxation. Either can elect to be taxed as a corporation by filing IRS Form 8832, and an S-corporation election is made on Form 2553.3Internal Revenue Service. Limited Liability Company (LLC) The S-corp election has a deadline — no later than two months and 15 days after the start of the tax year you want it to apply to.4Internal Revenue Service. Publication 509 (2026), Tax Calendars Nobody at the Secretary of State’s office mentions it during formation, so it’s easy to miss.
Pick a Name That Will Actually Clear
Ohio requires that your business name be “distinguishable upon the records” from every other name already on file with the Secretary of State. That standard is stricter than it sounds. “ABC Corp.” will be rejected if “ABC, LLC” already exists, because the office treats those as indistinguishable despite the different designators.5Ohio Secretary of State. Guide to Name Availability
Your name also has to include the right designator for your entity type. LLCs must include “limited liability company” or an approved abbreviation like “LLC” or “Ltd.”6Ohio Legislative Service Commission. Ohio Revised Code Chapter 1706 – Ohio Revised Limited Liability Company Act – Section 1706.07 Corporations must include or end with “company,” “corporation,” “incorporated,” or a standard abbreviation.7Ohio Legislative Service Commission. Ohio Revised Code 1701.05 – Corporate Name – Transfer – Reservation
Search the Secretary of State’s online database before you file. A name that clears Ohio can still infringe a federal trademark, so before you invest in signage or branding also search the U.S. Patent and Trademark Office database for marks that look similar, sound similar, or create a similar commercial impression in related goods or services.8United States Patent and Trademark Office. Federal Trademark Searching A state registration doesn’t create trademark rights, and a trademark holder can force you to rebrand no matter what Ohio says.
File Your Formation Documents
The form depends on your entity. LLCs file Articles of Organization on Form 610 (which replaced the older Form 533A). Corporations file Articles of Incorporation on Form 532A.9Ohio Secretary of State. Filing Forms and Fee Schedule10Ohio Secretary of State. Form 532A – Initial Articles of Incorporation Both are on the Secretary of State’s website, and you can submit online through Ohio Business Central or by mail to Columbus.
Every filing needs the same core information:
- Entity name, with the required designator.
- Purpose. Ohio accepts a general statement of lawful purpose, so you don’t have to describe your exact activities.
- Statutory agent. Every Ohio entity must appoint an agent with a physical Ohio street address to accept lawsuits and government mail. You can serve as your own agent or hire a service, which typically runs $35 to $350 a year.11Ohio Secretary of State. Form 521 – Appointment of Agent
- Authorized signature. The incorporator (for corporations) or an authorized organizer (for LLCs) signs.
Make sure the statutory agent’s name and address match exactly across every document. Mismatches are one of the most common reasons filings get kicked back.
The base filing fee is $99 for both LLCs and corporations. If you need it faster, Ohio offers three expedited tiers on top of that fee:12Ohio Legislative Service Commission. Ohio Administrative Code Rule 111:1-2-01 – Corporations Expedited Filing
- Level 1, $100 additional, processed within two business days.
- Level 2, $200 additional, processed within one business day.
- Level 3, $300 additional, processed within four business hours. Weekends and holidays don’t count toward the window.
Once approved, Ohio issues a certificate of formation and assigns your entity a unique identification number that becomes its official identifier for all future state filings. Keep the certificate with your permanent records.
Get Your EIN and Register for State Taxes
After your entity exists, apply for a federal Employer Identification Number (EIN) from the IRS. You’ll need it to open a business bank account, hire employees, and file federal returns for the entity. The IRS issues EINs online for free and the number is available immediately.13Internal Revenue Service. Get an Employer Identification Number Ignore third-party sites that charge for this. There’s no legitimate reason to pay someone to get an EIN.
Two Ohio tax registrations cover most new businesses, both through the Ohio Business Gateway:
- Commercial Activity Tax (CAT). Ohio taxes business gross receipts at 0.26%. For tax years 2025 and forward, only businesses with more than $6 million in Ohio taxable gross receipts owe CAT; the first $6 million is excluded. Most small businesses won’t hit that threshold for years, if ever, but the tax exists.14Ohio Department of Taxation. Commercial Activity Tax (CAT)
- Vendor’s license. If you sell tangible goods or taxable services in Ohio, you need a vendor’s license to collect and remit sales tax, and you need it before your first sale.15Ohio Department of Taxation. Register for a Vendors License or Sellers Use Tax Account
If You Plan to Hire: Two More Registrations
Hiring anyone — even one part-time employee — triggers two additional Ohio registrations before that first paycheck.
The Ohio Bureau of Workers’ Compensation (BWC) requires coverage from the date you first have Ohio employees. Ohio runs its own workers’ comp program rather than letting employers buy from private insurers, so you register directly with the BWC.16Ohio Bureau of Workers’ Compensation. Applying for Coverage Corporations with multiple owner-officers must carry coverage even without other employees.
You also register with the Ohio Department of Job and Family Services (ODJFS) for state unemployment taxes.17Ohio Department of Job and Family Services. Registering as an Employer Federal Unemployment Tax (FUTA) also applies to employers, at a base rate of 6.0% on the first $7,000 of each employee’s wages, reduced by a credit of up to 5.4% for timely state unemployment payments.18Internal Revenue Service. Publication 926 (2026), Household Employers Tax Guide
Check Local Zoning and Permits
State registration doesn’t clear you to operate at a specific address. Many Ohio municipalities require their own business licenses, and nearly all enforce zoning that restricts what kinds of businesses can operate where. A home-based business in a residential zone may need a conditional use permit or may not be allowed at all, depending on the locality.
Contact your city or county zoning office before you sign a lease or start renovations. Local permit costs and rules vary widely across Ohio, and finding a zoning conflict after you’ve committed to a location is far more expensive than checking first. If your city has a municipal income tax, you can typically register for withholding through the Ohio Business Gateway alongside your state tax accounts.
Keep Your Liability Shield Intact
Forming an LLC or corporation gives you liability protection, but courts can “pierce the veil” and hold you personally liable if you treat the entity as an extension of yourself. The behaviors that lead there are predictable:
- Mixing personal and business money. Open a dedicated business bank account and never pay personal expenses from it. This is the most common reason courts disregard liability protection.
- Skipping governance formalities. Corporations should hold annual meetings and keep minutes. LLCs should have an operating agreement covering ownership percentages, profit-sharing, and decision-making. Even a single-member LLC benefits from having one.
- Undercapitalizing the business. If the entity never has enough money to pay its debts while you’re pulling profits out, a court may treat it as a sham.
An operating agreement isn’t filed with the state, but it’s the document that governs your LLC internally. Without one, Ohio’s default rules in ORC Chapter 1706 control everything from profit distribution to what happens when a member leaves, and those defaults rarely match what the owners actually intended.
Ongoing Compliance
Ohio does not require LLCs or for-profit corporations to file annual reports with the Secretary of State, which is a real advantage over states that do.19Ohio Secretary of State. Frequently Asked Questions About Starting and Maintaining a Business Limited liability partnerships and professional associations do have biennial reporting requirements; standard LLCs and corporations don’t.
You still have to keep your statutory agent information current. If your agent’s address changes, or your agent resigns and you don’t appoint a replacement, the state has no way to deliver legal notices to your business and you could miss a lawsuit.
One filing you can skip: as of March 2025, all domestic companies are exempt from federal Beneficial Ownership Information reporting under the Corporate Transparency Act. FinCEN revised the rule so that only foreign-registered companies must report.20Financial Crimes Enforcement Network. Frequently Asked Questions This was a major source of confusion for new owners through 2024, but it no longer applies to businesses formed in Ohio.