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Business Details
46 Years
experience
Your Trusted Accounting Partner in Mount Prospect, IL
Weiss & Thompson is a dedicated accounting firm serving small businesses and individuals in the Northwest Chicago Suburbs. With decades of combined experience, our team provides comprehensive accounting, bookkeeping, and tax solutions tailored to meet the unique needs of our clients. We specialize in helping businesses reduce tax liability, improve financial efficiency, and achieve long-term profitability through personalized service and expert guidance. Our services include outsourced accounting, tax planning, QuickBooks support, payroll management, and new business advisory. Located in Mount Prospect, Illinois, we pride ourselves on building lasting partnerships with our clients by delivering accurate, reliable, and timely financial expertise.

Our commitment to excellence is reflected in our ongoing investment in professional development, cutting-edge technology, and a client-centric approach that prioritizes transparency and responsiveness. Whether you're starting a new business, managing an established enterprise, or seeking individual tax preparation, we offer affordable rates and a free consultation to help you make informed financial decisions.
Services
Outsourced Accounting Tax Planning QuickBooks Services Payroll Management Business Advisory Tax Return Preparation IRS Problem Resolution Incorporation Services
Details
  • Year established: 1980
Highlights and features
  • We offer decades of real-world accounting experience tailored to small businesses.
  • Our personalized service ensures clients receive customized financial strategies.
  • We specialize in tax-saving strategies aligned with evolving tax laws.
  • We serve Northwest Chicago Suburbs with local market expertise.
  • We provide free consultations to address client-specific financial needs.
What people say
Personalized service Tax-saving expertise Reliable financial guidance
Services
Outsourced Accounting
We provide comprehensive outsourced accounting solutions for businesses, including payroll processing, accounts payable/receivable management, and financial reporting. Our services ensure accurate record-keeping and regulatory compliance while reducing administrative burdens. Clients benefit from customized financial insights to support strategic decision-making.
Tax Planning
Our tax planning services help individuals and businesses optimize their financial positions by identifying deductions, credits, and legal tax-saving opportunities. We stay updated on evolving tax laws to ensure compliance while minimizing liabilities. Clients receive proactive advice to improve long-term financial efficiency.
QuickBooks Services
We offer QuickBooks setup, training, and ongoing support to streamline financial management for small businesses. Our experts ensure accurate data entry, reconciliation, and reporting to maintain organized financial records. This service empowers clients to monitor cash flow and business performance effectively.
IRS Problem Resolution
We assist clients in resolving IRS audits, tax liens, and payment plan negotiations. Our team leverages deep tax code knowledge to advocate for favorable outcomes and reduce penalties. Clients gain peace of mind knowing their tax issues are handled by experienced professionals.
Business Advisory
We provide strategic advisory services for new and established businesses, including incorporation, budgeting, and cash flow management. Our guidance helps entrepreneurs navigate financial challenges and build sustainable growth strategies tailored to their industry-specific needs.
People
Amy Thompson
CPA, MBA Partner
Amy Thompson, CPA and MBA holder, has over 25 years of experience in public accounting and business advisory. She specializes in tax law compliance, financial strategy, and client relationship management. Amy focuses on delivering personalized solutions while expanding the firm's expertise in evolving tax regulations.
Charles Weiss
Founder (In Memoriam)
Charles Weiss founded the firm in 1980 with 40 years of accounting experience. He built a legacy of client trust through meticulous attention to detail and a commitment to finding optimal financial solutions. His dedication to excellence continues to shape the firm's values.
Questions
What accounting services do you offer for small businesses?
We provide outsourced accounting, payroll management, QuickBooks support, and financial reporting tailored to small businesses.
Do you offer tax planning for individuals?
Yes, we specialize in individual tax return preparation and strategies to minimize personal tax liabilities.
Are your services available outside Mount Prospect?
We serve clients throughout the Northwest Chicago Suburbs, including Schaumburg and Arlington Heights.
How can I schedule a free consultation?
Contact us at 847-593-7558 or request a consultation through our website to discuss your financial needs.
What industries do you specialize in?
We work with e-commerce businesses, law firms, medical practices, restaurants, and condominium associations.
Reviews (6)
Melina Izabella Panagiotou
Nov 12, 2021 Report
Working with George was a pleasure. My husband and I had just moved from Europe with the intention of starting our own business. Not only did George and Weiss & Thompson assist us with organizing our company but also guided us through the tax process and tax planning strategies. Highly recommend to any new business owners.
Leslie Scott
Jun 07, 2021 Report
I was nervous about my 2019 taxes thinking it would be a big complicated affair. Half way through the year I moved to Chicago from another state, sold my old home and bought a new one. Thought it would be complicated owing to the fact I would need to pay capital gains tax and state taxes in two states. Weiss & Thompson allayed my fears and made the whole capital gains tax process understandable and painless.

Because of my complicated situation, this was the first time I've ever used CPAs to file my taxes. I highly recommend them. Amy and George were knowledge, professional, friendly, and timely. As I said earlier, they made the whole process painless. I have complete confidence in their work. I certainly needed them. As knowledgeable CPAs, they arrived at a lower amount owed than I had calculated myself from my own research on the Internet. I also found their prices extremely reasonable.
Phoebe Arbogast
May 14, 2021 Report
Very thorough, patient accounting for my personal and professional (physician working as an independent contractor) needs. Hanna clearly and patiently explains as much (or as little) of the nitty gritty as I need to feel confident and reassured about the accounting decisions, always ready to dig into the details with me if I ask.
Nathan Henry
Apr 14, 2021 Report
George, Patricia, Amy and the Weiss & Thompson team have provided my wife and I with a great value-added service in preparing and completing my personal and corporate tax returns for 2021. It's wonderful being kept informed of any new tax laws and announcements for my wife and I as taxpayers.
L. Dumas
Mar 20, 2021 Report
Aneta was very helpful in providing insight with our most recent tax returns! The Weiss &Thompson team is very professional and I look forward to working with them in the future!
Lee Nathenson
Dec 09, 2020 Report
I've had poor experiences with online services and national chains. This is the first time in years that I have confidence that my tax return was completed perfectly and professionally. And every step was made as easy as possible for me. I highly recommend them.