The Van Dusen Law Firm LLC

The Van Dusen Law Firm LLC is a tax attorney practice in Longmont, Colorado, serving individuals and businesses facing complex tax challenges. The firm specializes in tax planning, audit defense, tax controversy resolution, estate planning, probate matters, business formation, and contract negotiations. With a focus on proactive legal strategies, the firm helps clients navigate IRS examinations, appeals, and tax court proceedings. The practice is led by William R. Van Dusen, Jr., a Colorado-licensed attorney with over 25 years of experience in both public and private legal sectors, including roles as Assistant Attorney General, Deputy District Attorney, and Assistant City Attorney. The firm serves clients throughout Colorado, with offices in Longmont and Cuchara. It holds a 4.40 rating based on client feedback, reflecting consistent client satisfaction and reliable legal representation.

The Van Dusen Law Firm emphasizes a multidisciplinary approach, combining deep expertise in tax law with experience in litigation, criminal matters, and administrative hearings. William Van Dusen holds a Juris Doctor and a Master’s Degree in Law in Taxation from the University of Denver Sturm College of Law, and he is admitted to practice before the U.S. Tax Court and the U.S. District Court for the District of Colorado. The firm’s team is composed of legal professionals with diverse backgrounds, enabling comprehensive support across multiple legal domains. Clients benefit from a single point of contact for complex matters that span tax, business, and estate law. The firm offers a free initial consultation and provides tailored solutions to help clients resolve tax disputes and avoid future liabilities.

Located at 717 5th Ave in Longmont, the firm sits just a short walk from the Longmont Theatre Company, The Thinker public artwork, and Main Street, all within a quarter-mile radius. It is also approximately 0.3 miles from the Longmont Carnegie Library, situated near the intersection of 5th Avenue and 3rd Avenue.

The firm is recognized for its well-documented online presence and clean, accessible website, which search engines can easily interpret. This transparency supports client trust and reflects a commitment to clarity and professionalism. The firm’s long-standing reputation for handling high-stakes tax matters, including over 500 IRS-related cases, underscores its expertise and reliability.

In Longmont, The Van Dusen Law Firm stands as a trusted legal resource for those navigating tax and estate challenges, combining deep experience with a client-centered approach.