Adele K. Peterson, CPA

"Precision Accounting. Trusted Results."

About Us

Adele K. Peterson, CPA is a trusted, full-service accounting firm headquartered in Antioch, Illinois, proudly serving individuals and businesses throughout Lake, McHenry, Cook, DuPage, and Kane Counties, as well as Kenosha, Racine, and Walworth Counties in Wisconsin. Since 2017, we have been dedicated to delivering personalized, results-driven financial services designed to meet the unique needs of each client.
Our firm offers a comprehensive range of services, including business accounting, audits, reviews, compilations, payroll, and tax preparation. Beyond compliance, we focus on building long-term relationships and providing strategic insight to help clients make confident financial decisions.
Whether you need accurate tax filing, streamlined accounting solutions, or proactive financial planning, Adele K. Peterson, CPA is committed to helping you stay organized, minimize liabilities, and achieve your financial goals with clarity, precision, and professionalism.

Areas Served

Our Certifications

CPA (Certified Public Accountant)

What We Offer

Our Specialties include:

At Adele K. Peterson, CPA, we offer a full suite of accounting services designed to support your financial success. From business accounting that strengthens your company’s financial health to bookkeeping that keeps your records organized and accurate, we provide the foundation for growth. Our payroll services ensure your team is paid correctly and on time, while staying compliant with regulations. When it comes to taxes, we make filing stress-free with expert tax preparation and tax return management, helping you maximize deductions and minimize liabilities. For businesses seeking transparency and credibility, our audits, reviews, and compilations deliver clear insights and reliable assurance. And with our experienced accountants by your side, you’ll receive strategic guidance tailored to your goals. Whatever your financial needs, we’re here to provide precision, professionalism, and peace of mind.

Our Services include:

Attestation Services: Audits, Reviews, & Compilations
Business Accounting: Write Ups, Bookkeeping, & Payroll
Tax Preparation: - Individuals including sole proprietorships, Businesses, C Corporations and S Corporations, Partnerships, Limited Liability Companies, Non for Profits, & Trusts
Check out our Services Tab for more information!

Our Products include:

Business Accounting
Bookkeeping
Payroll
Tax Preparation
Audits
Reviews
Compilations
Nonprofit Services
Accountant
Tax Returns

Testimonials

On 4/9/2026 Donna Cariato had this to say:
Adele is very accommodating and easy to work with. I have used her for 3 years and am very happy.

On 2/5/2025 Margaret Fox had this to say:
Awesome CPA knows her stuff helped me tremendously. Thank you.!!!

Contact Us

Adele K. Peterson, CPA
777 Tiffany Farms Rd Antioch, IL 60002
Phone: (847) 395-1128
Fax: (847) 395-9077
Email: adele@adelepetersoncpa.com

Look out for the grey-sided house with a blue minivan in the driveaway!

Where To Find Us

Payment Types Accepted

Personal Checks, ACH

Our Hours

Monday: 11:00 AM - 5:00 PM
Tuesday: 10:00 AM - 5:00 PM
Wednesday: 10:00 AM - 5:00 PM
Thursday: 10:00 AM - 5:00 PM
Friday: 10:00 AM - 5:00 PM

News

At Adele K. Peterson, CPA, we believe financial clarity is the foundation for growth. Located in the city of Antioch, we proudly serve individuals and businesses throughout both McHenry County and Lake County — and beyond — with expert, personalized accounting services.
Here’s how we help you thrive:
💼 Business Accounting – Tailored solutions to strengthen your financial health
📚 Bookkeeping – Organized, accurate records for peace of mind
💸 Payroll – Reliable, compliant payroll management
🧾 Tax Preparation – Maximize deductions and file with confidence
🔍 Audits & Reviews – Ensure transparency and credibility
📊 Compilations – Clear, concise financial reporting
🧠 Strategic Accounting Guidance – Your trusted partner in planning and growth
Your goals matter — and we’re here to help you reach them with precision and care.

❓ FAQ: What do I need to prepare for tax season?
Getting organized early makes all the difference.
Here’s what to gather:
📄 All income statements
📄 Records of deductions
📁 Any relevant financial documents
Our team will walk you through each step to ensure a seamless, stress-free filing experience. At Adele K. Peterson, CPA, we’re here to make tax season easier — and more efficient — than ever.

🧾✨ Tax Season Made Simple ✨🧾
Tax season doesn’t have to be stressful. At Adele K. Peterson, CPA, we make the process smooth, accurate, and tailored to your unique financial situation.
Our tax preparation services help you:
✔ Maximize deductions
✔ Stay compliant
✔ Avoid costly mistakes
✔ File confidently and on time
Whether you’re an individual or a business owner, our team brings the expertise and attention to detail you deserve. Let us handle the numbers so you can focus on what matters most.
Book your tax appointment today — spots fill quickly this time of year.

✨ New Year, New Hours at Adele K. Peterson, CPA! ✨
We’re committed to serving you with convenience and care — and that starts with expanded availability.
📅 January Hours:
Monday–Friday: 10 AM – 6 PM
📅 Starting February:
We’re adding Saturdays!
Saturday: 1 PM – 5 PM
Whether you need help with bookkeeping, tax prep, or business accounting, our team is here to support your financial success.
Let’s make 2026 your most organized year yet.

Info

Client Portal
2025 CPA Peer Review

FAQ

What Attestation services do you offer?

- Audit: Ensure transparency and accuracy in your finances with our comprehensive audit services, providing the highest level of assurance.

- Review: Our review services enhance the credibility of your financial statements through careful evaluation, offering a limited but reliable assurance.

- Compilations: Organize your financial data into clear, compiled financial statements that offer a straightforward view of your financial performance.

What Business Accounting services do you offer?

- Write Up / Bookkeeping: Keep your finances organized and clear with our bookkeeping services, providing the foundation for your business's financial success.

- Payroll: Professional payroll management ensures your business is staying compliant with Payroll Tax Return filings and the latest regulations.

What Tax Preparation services do you offer?

- Individuals including sole proprietorships: Maximize deductions and achieve compliance with ease using our thorough tax preparation services, ensuring stress‑free filing.

- C Corporations and S Corporations: Maximize deductions and ensure compliance with business‑specific tax filing requirements.

- Partnerships: Comprehensive support to manage partnership tax filings with accuracy and efficiency.

- Limited Liability Companies: Navigate LLC tax obligations with confidence through our preparation services.

- Nonprofits: Maintain compliance and accuracy for nonprofit tax filings with our specialized guidance.

- Trusts: Ensure proper reporting and compliance for trust tax returns with attentive and attentive preparation.

How long does a typical audit take?

The duration depends on the audit's scope, but generally, it can take from a few weeks to a couple of months.

Do you offer services for new nonprofit organizations?

Yes, we assist new nonprofits with financial setup, compliance, and ongoing management to ensure impactful operations from the start.

Do you specialize in tax planning for small business owners transitioning from sole proprietor to S-Corp?

Yes — we help clients evaluate when it makes financial sense to elect S-Corp status and guide you through the entire transition. This includes tax savings analysis, payroll setup requirements, and ongoing compliance so you maximize benefits without unexpected IRS issues.

How do you help clients reduce tax liability beyond standard deductions?

We take a proactive, strategy-based approach to tax planning. This may include timing income and expenses, leveraging industry-specific credits, retirement contribution strategies, depreciation planning, and entity structure optimization—not just filing your return at year-end.

Can you clean up or catch up multiple years of unfiled or inaccurate taxes?

Absolutely. We specialize in resolving back tax issues, including preparing prior-year returns, correcting mistakes, and working with the IRS or state agencies to minimize penalties and bring you back into compliance as efficiently as possible.

What support do you provide if I receive an IRS notice or audit request?

We don’t just prepare your taxes—we stand behind them. If you receive an IRS notice or audit inquiry, we’ll review the issue, communicate with the IRS on your behalf when authorized, and guide you through resolution with a clear, low-stress plan.

Do you offer ongoing advisory services, or just annual tax filing?

We offer year-round advisory services for clients who want to stay ahead financially. This includes quarterly tax projections, cash flow insights, business growth planning, and on-demand guidance so you can make informed financial decisions throughout the year—not just during tax season.

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