As a therapist starting a private practice in Illinois, obtaining an Employer Identification Number (EIN) is a crucial step. This guide will walk you through the process of getting an EIN and explain why it's essential for your therapist business in Illinois. Check out our guide on starting a business in Illinois for step-by-step instructions.
An Employer Identification Number (EIN) is a unique nine-digit number assigned by the IRS to business entities operating in the United States. It's essentially a Social Security number for your business, used to identify it for tax purposes. Our resource on [the Illinois LLC filing process](https://www.lovie.co/formation/resources/llc-formation/agency-illinois) breaks this down further.
| State Filing Fee | $150 |
| Annual Fee | $75 |
| First Year Total | $225 |
| Processing Time | 6.2 days avg (official: 5-10 days) |
| Corporate Tax Rate | 9.5% |
Data sources: State Secretary of State offices, IRS, Tax Foundation (2026). Platform metrics based on anonymized Lovie user data.
Employer Identification Number (EIN) serves as the federal tax identifier required for business banking, hiring, and tax filing. Key components include IRS Form SS-4, federal tax identification, and responsible party designation, each playing a critical role in the ein process. Understanding federal tax ID number and business banking requirement is essential, as these factors directly impact payroll tax compliance.
When evaluating ein options, factors such as ITIN alternative for non-residents and same-day EIN approval should inform your decision-making process.
Ensure your Illinois therapy practice meets the IRS requirements for obtaining an EIN. Generally, if you're operating as a corporation, partnership, or have employees, you'll need one.
Decide on the legal structure of your Illinois therapy business (e.g., sole proprietorship, LLC, PLLC). This will influence how you apply for the EIN. Gather all necessary information, including your business name, address, the responsible party's information (Social Security number, name, etc.), and
Most banks in Illinois require an EIN to open a business bank account for your therapy practice. This keeps your business finances separate from your personal accounts.
If you plan to hire therapists, administrative staff, or other employees in Illinois, you'll need an EIN to report their wages and withholdings to the Whether you choose to form an LLC or PLLC for your therapy practice in Illinois, you'll generally need an EIN. This is especially true if you want lia
Use your EIN to open a business bank account for your Illinois therapy practice. This is essential for managing your finances and maintaining a professional image.
Provide your EIN when applying for or renewing any required business licenses or permits in Illinois. This ensures your business is properly registere Use your EIN to enroll as a provider with various insurance panels in Illinois. This allows you to accept insurance payments from your clients.
Start your formation with Lovie — $29 one-time, plus your state's filing fee.
State-specific formation guides, cost breakdowns, compliance checklists, and expert comparisons — updated for 2026.