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Trusted Legal Services in South Barrington, IL
Spagnolo & Hoeksema, LLC is a respected law firm with over 90 years of combined legal experience representing individuals and business owners in commercial law, civil litigation, estate planning, and tax matters. Our attorneys prioritize client interests, delivering skilled guidance honed through decades of practice. We specialize in estate planning and administration, business and commercial law, and tax litigation, serving clients in Illinois and Indiana. Our team includes Certified Public Accountants and a tax law professor, ensuring deep expertise in financial and tax-related legal issues.

With a focus on precision and efficiency, we handle complex cases ranging from probate disputes to business formation, offering cost-effective representation tailored to client needs. Our litigation support combines courtroom experience with strategic preparation to resolve disputes effectively. We build long-term relationships, providing holistic legal solutions that address both immediate concerns and future planning.
Services
Business Litigation Estate Planning Guardianships Commercial Real Estate Tax Law Business Formation
Highlights and features
  • Over 90 years of combined legal experience in business and estate law
  • Two attorneys are Certified Public Accountants with tax law expertise
  • Client-focused approach prioritizing individual goals and risk mitigation
  • Proven success in complex litigation and business formation cases
  • Holistic legal strategies integrating financial, tax, and commercial insights
Associations and certifications
  • Certified Public Accountants
  • Tax Law Professor
What people say
Responsive Transparent Knowledgeable Professional Thorough
Services
Estate Planning
We create customized estate plans to protect assets and ensure client wishes are followed. Our attorneys draft wills, trusts, and probate agreements while considering tax implications. Services include guardianship planning and minimizing probate requirements through living trusts. Clients receive clear guidance on federal estate taxes and asset distribution strategies.
Business Litigation
Our firm handles complex business disputes including contract conflicts, shareholder issues, and commercial litigation. We prepare cases for court while seeking cost-effective resolutions through negotiation. Services cover construction liens, loan disputes, and real estate litigation with a focus on protecting business interests during legal proceedings.
Tax Law
We resolve tax controversies with the IRS and state agencies, including offers in compromise and tax court representation. Our services combine legal expertise with accounting knowledge to address income, sales, and transfer tax issues. The firm provides strategic planning to minimize tax liabilities for businesses and individuals.
Business Formation
We advise on selecting appropriate business structures (LLC, corporation, partnership) and handle formation requirements. Services include drafting operating agreements, obtaining EINs, and state tax registrations. Our attorneys ensure proper documentation for business succession and financial planning needs.
Probate Administration
We guide executors through probate processes including will verification, asset inventory, debt settlement, and property distribution. Our attorneys handle contested estates and trust disputes while minimizing tax burdens. Services include preparing necessary court filings and ensuring compliance with Illinois and Indiana probate laws.
People
Don Oliver Spagnolo
Attorney
Admitted to the Illinois Bar since 1988 and a Certified Public Accountant since 1985, Don combines legal and financial expertise to advise clients on complex business and tax matters.
Kristin E. Hoeksema
Attorney
Specializing in probate, contested wills, and trust matters, Kristin brings extensive litigation experience to estate planning and administration cases with a client-focused approach.
John M. Janiga
Attorney
With Illinois Bar admission since 1988 and CPA certification, John provides tax law expertise as both a practicing attorney and tenured university professor specializing in federal taxation.
Questions
What areas of law does Spagnolo & Hoeksema specialize in?
We specialize in business litigation, estate planning, tax law, commercial real estate transactions, and business formation for clients in Illinois and Indiana.
How does the firm handle estate planning?
We create customized estate plans including wills, trusts, and probate strategies to protect assets and ensure client wishes are followed.
Can the firm assist with business formation?
Yes, we advise on entity selection (LLC, corporation, etc.) and handle all legal requirements for starting or modifying businesses.
What tax law services are offered?
Our services include tax dispute resolution, IRS negotiations, and strategic tax planning integrated with business and estate matters.
How accessible are the attorneys for consultations?
We offer in-person, phone, and online consultations with offices in South Barrington, IL and St. John, IN for client convenience.