Lanphier LLP

Lanphier LLP is a Denver CPA firm established in 2009 by Brittany and Dennis Lanphier, both bringing experience from major accounting firms. The practice specializes in strategic tax planning, accounting, and advisory services for individuals and businesses. Its expertise includes international taxation, IRS disputes, business tax returns, and financial statement preparation. Lanphier works with startups, real estate developers, construction companies, and professional service providers. The firm's approach emphasizes understanding financial decisions before tax deadlines arrive, allowing clients to address complex obligations with informed planning.

Small business advisory services include entity structure analysis, owner compensation planning, profitability reviews, and succession strategies. Lanphier also assists with rental property taxation, investment decisions, accounting system implementation, and international relocation planning. Its Individual Tax Fundamentals and Business Best Practices programs provide structured guidance on tax efficiency and financial decision-making. Dennis Lanphier separately operates a law practice, giving eligible clients access to legal and accounting expertise through distinct professional engagements. The firm also supports clients remotely across international locations.