How to Start a Sole Proprietorship in Oklahoma

Last updated: March 13th, 2024
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Starting a sole proprietorship in Oklahoma is a straightforward process that allows entrepreneurs to establish and operate their businesses. This all-encompassing guide will take you through the steps of starting a sole proprietorship in Oklahoma, from choosing a business name to obtaining licenses and permits, registering for taxes, and more. Whether you’re a seasoned business owner starting a new side project or just starting, this guide will provide the information to launch your sole proprietorship in Oklahoma successfully.

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What is a sole proprietorship?

A sole proprietorship is an informal business structure where an individual operates a business as the sole owner. It is the simplest and most common form of business ownership, popular with small business owners and entrepreneurs. It is characterized by its ease of setup and minimal legal requirements. As a sole proprietor, you have full control and decision-making authority over your business, but you are personally liable for any debts it incurs.

A step-by-step guide to starting your Oklahoma sole proprietorship


Choose a business name

The first step is choosing a business name. Your business name should be unique, easy to remember, and reflect the nature of your business.

By default, sole proprietors must use their own name for their business. If you wish to use a different name, you must file a “doing business as” (DBA). Many individuals prefer to use a trade name or DBA name for their business as it can seem more professional.

Here’s how you can choose and register a business name for your sole proprietorship:

  1. Choose a business name: Think of some names that describe your business, and try to include keywords that may appear in online searches. A good name is memorable, so try to think of something snappy and short.
  2. Check availability: Before finalizing your business name, it’s important to check its availability.

Use these online databases to confirm your name is unique:

  • The Oklahoma Secretary of State’s business entities search to ensure that no other business uses the same name in the state.
  • You should also check the United States Patent and Trademark Office’s Trademark Electronic Search System to make sure your chosen name is not already trademarked.
  1. Check online availability: Check that your business name aligns across web domains and social media platforms. This helps strengthen your brand’s image and visibility for customers who search for you online.
  2. Register the business name: Once you have chosen a unique business name, you must register it as a trade name with the Oklahoma Secretary of State. Register your DBA by completing a trade name report or filing online. Submit it along with the required filing fee to the Secretary of State.

Obtain an (Employer Identification Number) EIN

While obtaining an Employer Identification Number (EIN) is not mandatory for sole proprietors without employees, it is recommended.

An EIN is a nine-digit number allocated by the Internal Revenue Service (IRS). It serves as a unique tax ID number for your business and can provide several benefits:

  • Opens up business banking opportunities: Having an EIN allows you to open a business bank account separate from your accounts. This separation helps you maintain clear financial records and simplifies tax filing.
  • Helps establish business credit: With an EIN, you can start building a separate credit history for your business, which may be beneficial when applying for loans or lines of credit.
  • Eases the hiring process: If you plan to expand your sole proprietorship and hire employees, having an EIN is necessary for payroll tax reporting and other employment-related requirements.
  • Enhances business privacy: Using an EIN instead of your Social Security Number (SSN) on invoices and contracts adds an extra layer of privacy and identity protection.
  • Prepares for business growth: If you have plans to grow your business and potentially convert it into a different business entity, such as a Limited Liability Company (LLC) or a corporation, having an EIN is a crucial step in the transition process.

Register through the IRS website or click here to obtain an EIN.


Obtain Oklahoma business licenses, permits, and zoning clearances

  • Sole proprietors in Oklahoma do not need a general business license. 
  • It is more than likely that you will need additional licenses and permits. These will depend upon your business activities.
  • The Oklahoma Department of Commerce provides information on industry licensing requirements on its Business Licensing & Operating Requirements website.
  • The Oklahoma Employment Security Commission has created an interactive tableau table where you can search among hundreds of occupations and what professional licenses you may need. The table also supplies the licensed authority and contact information to ease the application process.
  • Local requirements can vary depending on your city or county. Check with your local government offices, such as city hall or county clerk’s office, to determine if any specific licenses or permits are required for your sole proprietorship.
  • Certain highly regulated sectors like financial services, agriculture, firearms, and more necessitate applicable permits from federal agencies before operating. The Small Business Administration website helps determine if federal licenses apply to your business activities.

Register for taxes

In Oklahoma, sole proprietors must document all business financials using Schedule C with their 1040 tax return. Your net income or loss will be taxed at the individual income tax level.

As a self-employed sole proprietor, you must pay self-employment taxes for Social Security and Medicare contributions using Schedule SE.

Access the information and the most current versions of Form 1040Schedule C, and Schedule SE on the Internal Revenue Services (IRS) website.

Additional state and local taxes

Additional steps

After securing your EIN, signing up for federal taxes, and getting the necessary licenses, you’ve crossed off all the big tasks required to launch your sole proprietorship.

Next, we’ll share some additional steps to help keep your small business aligned with rules and organized.


Open business bank accounts

Keeping your personal assets safe and creating segregation with your business finances is vital. Opening a dedicated business bank account will help you move towards this:

Setting up a business bank account comes with a host of benefits, such as:

  • Simplified bookkeeping and record-keeping: When your personal and business finances don’t mix, keeping track of what you earn and spend is much simpler.
  • Facilitates accurate tax reporting: If you have a bank account just for your business, spotting and reporting business transactions on your tax filings becomes much easier.
  • Demonstrates professionalism: A business-only bank account gives your business a professional look and feel, boosting your credibility with customers, suppliers, and banks.

Get liability insurance

Being a sole proprietor means that you alone are responsible for any business debts, which makes insurance a key piece of your business strategy. This can help guard you against unexpected claims or incidents. Here’s what we suggest you consider:

  • General liability insurance: This policy takes care of claims related to damage to property, physical injury, or personal harm that might be connected to your business.
  • Professional liability insurance: This type of insurance is vital if your business provides services. It helps protect you from alleged supposed negligence, errors, or oversights in your services.

Maintain business records

Keeping records is important for tax filing and managing your sole proprietorship’s financial affairs. You should make an effort to precisely track the following:

  • Income
  • Expenses
  • Assets and liabilities
  • Inventory
  • Billing documents

Using bookkeeping software and spreadsheets or setting up a systematic method can help handle documents. Being as organized as possible will prove helpful when it’s time to file taxes, and it promotes the overall financial health of your business.

Sole proprietorship vs. LLC

While a sole proprietorship might seem appealing due to its simplicity and few legal needs, it’s vital to consider possible downsides and look into other types of business structures, like a Limited Liability Company (LLC).

Here are some things to think about when choosing between a sole proprietorship and an LLC:

  • Protection from debt: One big plus of starting an LLC is its protection from debt. As a sole proprietor, you are responsible for any money owed or legal claims against your business, which could put your own assets at risk. On the other hand, an LLC gives a clear divide between your personal and business assets, keeping your personal belongings safe from business debts.
  • Looking professional: An LLC could make you look more professional in customers’ eyes. Starting an LLC shows more dedication to your business.
  • Potential to grow: If you plan to make your business bigger or attract outside funding, an LLC gives you more room to grow than a sole proprietorship.
  • Flexibility with taxes: One plus of a sole proprietorship is how simple it is when it comes to taxes. You usually report money made and money spent by your business on your personal tax return with a Schedule C. An LLC also offers flexibility with taxes, as it can be treated like a sole proprietorship, a general partnership, or a corporation for tax reasons.

It’s important to remember that starting an LLC involves more steps and legal documents, like filing Articles of Organization and paying filing fees.


Can I operate my sole proprietorship under a different name?

You can operate your sole proprietorship under a different name by registering a “Fictitious Name” or “Doing Business As” with the Oklahoma Secretary of State. This allows you to use a business name other than your legal name.

Do I need an EIN for my sole proprietorship if I don’t have employees?

While an Employer Identification Number is not mandatory for sole proprietors without employees, it is recommended. An EIN can simplify certain business transactions and help protect your personal social security number.

What licenses and permits do I need for my sole proprietorship?

The licenses and permits required for your sole proprietorship depend on the nature of your business and its location. Check with the Oklahoma Department of Commerce for state-specific requirements and consult your local government offices for any additional local licenses or permits.

Can I convert my sole proprietorship to an LLC in the future?

Yes, converting your sole proprietorship to Oklahoma LLC is possible if you wish to obtain personal liability protection.

Do I need a registered agent for my new business?

Sole proprietors do not need registered agents; however, all Oklahoma LLCs need registered agents.

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