Tax return preparation at $147-$490 per return.
Starting a tax preparation business in Illinois requires an IRS Preparer Tax Identification Number (PTIN) and registration with Illinois Department of Financial and Professional Regulation, professional tax software, and strong knowledge of tax law. Illinois requires tax preparers to register through the Illinois Department of Financial and Professional Regulation. No mandatory state registration for basic tax prep, but voluntary registration available. Local jurisdictions may require business licenses. Startup costs range from $1,950 for a home-based seasonal operation to $14,700 for a year-round tax and accounting office. Tax preparers in Illinois charge $147-$490 per return depending on complexity.
Illinois is one of the few states that regulates tax preparers. No mandatory state registration for basic tax prep, but voluntary registration available. Local jurisdictions may require business licenses. N/A for state registration; local penalties may apply. Verify requirements at https://idfpr.illinois.gov/
Anyone who prepares or assists in preparing federal tax returns for compensation must have a valid PTIN from the IRS. Preparing returns without a PTIN is illegal and can result in penalties. Renew annually before each tax season.
An Enrolled Agent (EA) is the IRS's highest credential for tax professionals. EAs have unlimited representation rights before the IRS, can represent clients in audits and appeals, and command higher fees. The 3-part Special Enrollment Exam is challenging but career-changing.
| Item | Low | High | Magnitude |
|---|---|---|---|
| LLC Filing Illinois LLC registration | $150 | $150 | |
| Tax Software (Annual) Drake Tax, Lacerte, ProSeries, or UltraTax | $500 | $2,950 | |
| IRS PTIN Annual federal preparer identification | $20 | $20 | |
| Illinois Tax Preparer Registration Illinois Department of Financial and Professional Regulation | $100 | $100 | |
| Professional Liability Insurance (E&O) Annual—essential for tax preparers | $400 | $1,175 | |
| General Liability Insurance Annual, $1M coverage | $250 | $600 | |
| Surety Bond (If Required) Required in some states (CA, NV) | $0 | $500 | |
| Computer & Equipment Computer, printer, scanner, shredder | $500 | $1,950 | |
| Office Space (Seasonal) Jan-April rental or home office | $0 | $5,875 | |
| Enrolled Agent Exam Prep (Optional) Gleim, Surgent, or Fast Forward Academy | $0 | $1,475 | |
| Marketing & Advertising Google Ads, flyers, local advertising | $200 | $1,475 | |
| Continuing Education Annual tax law updates and CE credits | $100 | $500 | |
| Startup range | $1,950 | $14,700 |
The line items above are the main cost drivers, not an exhaustive sum. Several are alternatives rather than additions — a mobile setup or a storefront, a rented kitchen or a build-out — so they are not added together. The startup range is the figure used across this page.
Federally required for all paid tax preparers. Renew annually.
Register LLC with Illinois Secretary of State
Required for business banking and employer obligations
Illinois Department of Financial and Professional Regulation. No mandatory state registration for basic tax prep, but voluntary registration available. Local jurisdictions may require business licenses.
Check Illinois city/county requirements
Covers claims of tax preparation errors
Required from IRS to e-file returns on behalf of clients
IRS credential with unlimited representation rights. Pass 3-part SEE exam.
| # | City | Note |
|---|---|---|
| 01 | Chicago Chicago has a large population of individuals and small businesses needing tax preparation. With 2.7M residents it is the largest of the four markets listed for Illinois. | Chicago has a large population of individuals and small businesses needing tax preparation. With 2.7M residents it is the largest of the four markets listed for Illinois. |
| 02 | Aurora Aurora has a large population of individuals and small businesses needing tax preparation. With 180K residents it is the second largest of the four listed markets, well under a tenth the size of Chicago. | Aurora has a large population of individuals and small businesses needing tax preparation. With 180K residents it is the second largest of the four listed markets, well under a tenth the size of Chicago. |
| 03 | Naperville Naperville has a large population of individuals and small businesses needing tax preparation. With 150K residents it is the third largest of the four listed markets, well under a tenth the size of Chicago. | Naperville has a large population of individuals and small businesses needing tax preparation. With 150K residents it is the third largest of the four listed markets, well under a tenth the size of Chicago. |
| 04 | Rockford Rockford has a large population of individuals and small businesses needing tax preparation. With 145K residents it is the fourth largest of the four listed markets, well under a tenth the size of Chicago. | Rockford has a large population of individuals and small businesses needing tax preparation. With 145K residents it is the fourth largest of the four listed markets, well under a tenth the size of Chicago. |
Most new tax preparers in Illinois start as seasonal operations (January-April). As you build your client base, add year-round services: tax planning, bookkeeping, payroll, and quarterly estimated tax preparation. Year-round services create steady income beyond tax season.
The EA credential is the best investment a tax preparer can make. It gives you unlimited IRS representation rights, commands higher fees, and differentiates you from uncredentialed preparers. Study 3-6 months, pass 3 exams, and your earning potential jumps 30-50%.
Tax prep is a recurring business—clients return every year if you do good work. Send reminders in January, offer prior-year return discounts, and provide year-round tax tips. A Illinois practice with 200+ returning clients generates strong seasonal income.
Tax planning (not just preparation) commands premium fees. Help Illinois clients minimize their tax liability through strategic planning, retirement contributions, business deductions, and timing of income/expenses. Charge $200-$975 for an annual tax planning session.
Apply for your Preparer Tax Identification Number at irs.gov/ptin. It costs $19.75 and takes about 15 minutes online. You must renew annually before each tax season. This is the minimum federal requirement to prepare returns for pay.
Illinois requires registration recommended. No mandatory state registration for basic tax prep, but voluntary registration available. Local jurisdictions may require business licenses. Complete this before your first tax season.
Complete tax preparation training through an accredited program. Consider becoming an IRS Enrolled Agent (EA)—pass the 3-part Special Enrollment Exam for unlimited IRS representation rights. EA certification significantly increases your earning potential and credibility in Illinois.
File LLC ($150) with Illinois Secretary of State. Get EIN from IRS (free). Apply for EFIN (Electronic Filing Identification Number) to e-file returns. Open a business bank account.
Choose professional tax software: Drake Tax ($1,500-$3,000/season), Lacerte ($400-$4,000), ProSeries ($500-$2,000), or UltraTax. Most Illinois preparers start with Drake or ProSeries for the best value. Ensure your software handles both federal and Illinois state returns.
Professional liability (E&O) insurance is critical—one error on a return can lead to costly client claims. Budget $400-$1175/year in Illinois.
Set up a secure workspace with a reliable computer, printer/scanner, shredder (for sensitive documents), and locked filing for client records. Many Illinois preparers start from home offices during January-April and expand later.
Start marketing in November/December before tax season. Offer early-bird discounts in Illinois. Partner with bookkeepers, financial advisors, and real estate agents for referrals. Register on Google Business Profile and local directories. Word-of-mouth from satisfied clients is your best long-term growth strategy.