naperville accountants and business consultants
Individual & Business Tax Preparation, Bookkeeping Services, and Consulting
Trusted Accounting Expertise for Over 30 Years
At Lee Mandel & Associates, we’ve been providing expert accounting and tax services for over 30 years. Our team’s unparalleled knowledge and commitment to client satisfaction have made us a trusted partner for individuals and businesses alike. Whether you need assistance with tax returns, business accounting, or financial planning, we’re here to guide you every step of the way.
Our Services
We are a full-service accounting practice specializing in business and individual tax returns, small business consulting, Quickbooks support and preparation, and financial statement preparations & analysis. We offer personalized solutions to meet your unique needs.
Tax Services
When it comes to tax services, Lee Mandel & Associates offers you the best of both worlds: with the experience of veteran tax experts and commitment to a personal investment in your corner.
Accounting & Bookkeeping
As a small business owner, you have more important things to do than to keep your own books. Our Bookkeeping Service will take care of your books for you, so you can get back to the job of running your business and generating profits!
Business Consulting
Lee Mandel & Associates is composed of experienced experts from across the business world. With an eye for personal success and a focus on delivering tailor-made solutions.
What sets us apart?
Our expertise, honesty, and a genuine commitment to your financial success. When you choose Lee Mandel & Associates, you get more than just an accountant—you get a trusted advisor who speaks your language and has your back.
Decades of Expertise in Accounting & Tax Services
“30 Years of Proven Results”
With over three decades of experience, Lee Mandel & Associates has built a reputation for providing expert accounting and tax solutions. Our extensive knowledge ensures that your financial matters are handled with the highest level of professionalism and accuracy, no matter how complex the situation.
“Straightforward, Honest Advice You Can Trust”
At Lee Mandel & Associates, we believe in clear, honest communication. From tax returns to financial planning, we always provide transparent advice and realistic expectations—ensuring you understand every step of the process. No surprises, just straightforward solutions.
“Your Business is Our Priority”
We don’t take a one-size-fits-all approach. Whether you’re an individual or a business, we take the time to understand your unique needs and deliver customized accounting solutions. Our friendly and approachable team is dedicated to supporting you every step of the way.
Testimonials
“[H]is rates are competitive and he really knows his craft. I have never been “disappointed” with my bottom line (even when I was prepared to be disappointed.) He is also a great advisor on tax issues. I have called him with tax related questions during the year and he always returns my calls promptly and gives me thoughtful, helpful answers. Oh yeah, and did I mention he’s funny too? That really helps when [you’re] approaching April 15th… If you need tax advice, call Lee. You will be glad you did, even if it does mean going to Naperville once a year.“
– Jim
“I would not think of doing my taxes without Lee Mandel’s expertise. Since 1995, I have consulted him and always received thoughtful and accurate answers. Lee is also an excellent business adviser, always getting to the core of sound decision-making. He has a lively and positive intelligence that is contagious. I leave Lee’s office with new examples demonstrating that he is the consummate entrepreneur. For this reason, he understands the individuality of his clients. In short: Lee has a comprehensive knowledge and understanding of tax law and preparation. He has a quick grasp of one’s business needs, provides thorough counsel, and has a great sense of humor. He is the most competent and personable person I have ever worked with on this unpleasant task.“
– Rick
“You can’t have a better business consultant in your corner. Lee has helped me launch two successful companies. He not only helped me identify the best business structure, but he was invaluable in getting our financial and operational processes in place. Lee has been there to support and mentor me and key members of my staff. He’s even played a business development role by introducing me to numerous people he felt could benefit from our services. In fact, we’ve generated over $250,000 in new business because of Lee. Show me another accountant who does that!“
– David