Don Oliver Spagnolo

Don is Of Counsel at Riley & Ahler P.C. He is a seasoned legal professional with a diverse range of expertise. Admitted to the Illinois Bar in 1988 and the Indiana Bar in 2025, he has also been a Certified Public Accountant (CPA) since 1985. With his extensive experience, Don has successfully represented a wide array of clients, including closely-held owner-operated businesses, individuals, and tax-exempt organizations. Don's areas of specialization encompass business structuring, acquisitions, sales, and restructuring. He has a proven track record of resolving tax disputes with the IRS and the Illinois Department of Revenue, often securing favorable outcomes for his clients through reduced penalties and taxes. Additionally, Don has provided invaluable guidance to business owners in estate planning and facilitating the transition of family businesses to the next generation. Furthermore, Don has contributed significantly to the field of tax law, having authored numerous internal memos and treatises on S-Corporations while serving on an S-Corporation Expert Team at a major tax firm. He has also drafted comprehensive manuals on S-Corporations and Partnerships for use within the firm. Don's expertise extends to the representation of various business entities, including corporations, limited liability companies, partnerships, and sole proprietorships. He is also proficient in trust and probate administration, encompassing the preparation and filing of estate tax returns.