Legal Services

An important note: Lanphier LLP is a CPA firm (Colorado License #13111) and does not practice law. The legal services described on this page are provided by Dennis M. Lanphier, P.C. (DML PC), the independent solo law practice of Dennis M. Lanphier, Esq., CPA, LL.M. DML PC shares office space with Lanphier LLP in Denver, and the two firms work closely together to provide clients with a seamless, integrated experience across accounting, tax, and legal matters. However, DML PC is a separate legal entity with its own engagement agreements and ethical obligations.

This arrangement gives our clients something rare: access to a licensed attorney who is also a CPA with an advanced degree in taxation, working side by side with a full-service accounting firm. When your tax planning raises legal questions, when a business dispute has tax implications, or when you need representation before the IRS or in court, you do not have to coordinate between separate professionals who have never met. Dennis and the Lanphier LLP team collaborate daily, and that close working relationship translates into faster, more informed, and more effective service for every client.

Legal Services Through DML PC

Entity Formation and Business Structuring

Dennis M. Lanphier, P.C. assists Denver-area business owners with entity selection and formation -- including LLCs, corporations, partnerships, and professional entities -- with a focus on the tax implications of each structure. Because Dennis understands both the legal and tax dimensions of entity selection, clients receive advice that is optimized across both disciplines from the start.

Contract and Lease Review

DML PC reviews and drafts business contracts, commercial leases, operating agreements, and other transactional documents. Having a legal advisor who also understands the financial and tax consequences of contract terms ensures that agreements are structured to protect your interests on every front.

Business Dispute Resolution

When business disputes arise -- whether between partners, with vendors, or with customers -- DML PC provides skilled negotiation, mediation, and, when necessary, litigation support. Dennis's background in both law and accounting is particularly valuable in disputes involving financial matters, valuations, or partnership and shareholder disagreements.

Tax Court Petitions and IRS Representation

As a licensed attorney admitted to practice before the US Tax Court, Dennis represents clients in Tax Court proceedings, including petitions to challenge IRS deficiency notices, innocent spouse relief claims, and collection due process hearings. This capability extends the tax controversy services offered by Lanphier LLP into the judicial arena, providing clients with full-spectrum representation from audit through litigation.

District Court and Appellate Litigation

For matters that require filing in US District Court or state courts in Colorado, DML PC provides experienced litigation representation. Whether the issue involves a tax refund claim, a business dispute, or another matter requiring judicial resolution, Dennis brings the same combination of legal skill and financial acumen to the courtroom.

"We have had a great partnership with Dennis in many business endeavors. He is the consummate professional."

-- Toby Terhune, President, Shadow Creek Homes LLC

To learn more about the legal services available through DML PC, visit denvertaxcounsel.com or read more about Dennis M. Lanphier, P.C. You can also contact our Denver office to schedule a consultation that addresses both your accounting and legal needs in a single conversation.