When you’re looking for the best tax preparation service Illinois has to offer, we’ve got everything you need to make filing easy.
We’re here for you even after tax season ends, ready to help with any questions that come up.
Your personal information is protected with bank-level security you can count on.
We double-check every detail to ensure compliance with the Illinois Department of Revenue (IDOR) requirements, so your return is filed right the first time.
Our expert tax team takes time to understand your unique situation and finds deductions specific to you.
Just stop by an Illinois branch when it’s convenient for you—no need to schedule ahead.
Our fair prices mean you keep more of your refund where it belongs.
We search for every credit and deduction, from the Illinois Earned Income Credit to the K-12 Education Expense Credit, maximizing your Illinois refund.
Don’t wait weeks for the IRS to process your Illinois return. With Refund Advance, you can get up to $7,500 of your expected refund as soon as the same day you file.
Available January 2, 2026 – February 28, 2026
Need help with both federal and Illinois state tax filings? We handle everything in one place. Our Illinois state tax service team knows the ins and outs of state-specific deductions and credits that could save you money. Whether you’re filing federal, just state, or both, we make the whole process straightforward.
Federal tax returns
We handle all federal forms and help you claim every deduction you qualify for.
State and local taxes
Our experts know your local tax laws and help you file accurately.
Sun Loan proudly serves communities across Illinois with the best income tax preparation services.

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The cost of tax preparation services in Illinois varies based on how complex your return is. A basic return with just one W-2 form typically costs less than returns with multiple income sources, business expenses, or rental properties. If you need both federal and state filing, that affects the price, too.
At Sun Loan, we handle both your federal and state tax returns. Whether you need just one or both, we’ll walk you through what’s included in your service.
Self-employed filers and small business owners usually pay more because their returns require extra forms and schedules. The best way to get an accurate price is to contact your local branch with details about your tax situation, and we’ll give you a clear quote upfront.
Find a branch near you to connect with experienced Illinois tax preparers who know state and federal tax laws. We have convenient locations throughout Illinois, from Chicago to smaller towns across the state.
All our tax experts go through thorough training and stay up to date on the latest federal and state tax code changes. When you’re looking for the best income tax preparation services Illinois has available, you want someone who’s helped thousands of filers and consistently gets great reviews, and that’s exactly what you’ll find at Sun Loan.
To get your federal and state taxes filed correctly, gather these documents:
Our tax preparation team will walk you through what applies to your situation when you come in.
Yes, Illinois tax preparation services are available online through Sun Loan. Our online tax services let you upload documents securely from home, and our tax experts handle all the hard work. You’ll get the same careful attention and maximum refund guarantee as our in-person clients.
Once your return is ready, you review everything and e-sign digitally—no need to print or mail anything. We also offer in-person tax preparation services if you prefer meeting face-to-face, or drop-off tax services where you simply leave your documents and we call you when everything is ready.
Absolutely. Our Illinois state and federal tax preparation experts work with self-employed individuals, independent contractors, freelancers, and small business owners all the time. We know the extra forms you need, like Schedule C for business income and Schedule SE for self-employment tax.
We’ll help you track deductible business expenses like home office costs, equipment, mileage, and supplies that lower your tax bill. Many self-employed people overpay because they miss deductions they’re entitled to, and we make sure that doesn’t happen to you.
Ready to get started? Fill out our tax prep form, and we’ll reach out to discuss your business situation.
If your taxes are simple with just one W-2 and the standard deduction, you might handle them yourself with tax software. But hiring an Illinois state tax service professional makes sense in a lot of situations, whether you’re filing state taxes, federal taxes, or both. Did you buy a house, get married or divorced, have a baby, or switch jobs this year? Those life changes add complications where mistakes happen easily.
Our tax preparation services in Illinois will save you time and money, too. We catch errors before they become IRS problems, find deductions you’d likely miss, and give you confidence that everything’s filed correctly. Plus, if questions come up later, we’re here to help you handle them.
1For the initial purposes of pre-qualifying you for a loan, we will use credit information from one or more Credit Reporting Agencies. This information is pulled using a “soft” credit inquiry, which does not impact your credit score. If you are approved for and accept the loan, we will obtain a complete Consumer Credit Report from one or more Credit Reporting Agencies; this request for a credit report will result in a “hard” credit inquiry and may impact your credit score.