Dennis M. Lanphier, P.C. is a Denver-based law firm specializing in tax and business law, offering integrated legal and accounting expertise through its associated CPA practice. The firm stands out for its dual qualifications, combining legal counsel with certified public accounting to provide comprehensive solutions for both domestic and international clients.
The firm takes a responsive and confidential approach, offering experienced representation for complex tax controversies, business transactions, and international compliance matters. It serves a worldwide client base, including businesses, individual taxpayers, expatriates, and accidental Americans, with a focus on resolving difficult situations through prompt communication and strategic planning.
Services Offered
- Tax Consulting
- Tax Planning
- Tax Relief Services
- IRS Audits
- IRS Appeals
- IRS Tax Court Petitions
- IRS & State Collections
- Offers in Compromise
- Payroll Taxes & Trust Fund Recovery
- Unfiled Tax Returns
- Foreign Asset Reporting Issues
- Colorado Dept of Labor Audits & Appeals
- FATCA Tax Law
- FATCA Letter Response
- Unreported Foreign Income
- Offshore Voluntary Disclosure Program (OVDP)
- Streamlined Domestic Offshore Procedures (SDOP)
- Streamlined Foreign Offshore Procedures (SFOP)
- Offshore Bank Accounts
- Outbound International Tax
- Inbound International Tax
- Expat Taxation
- Accidental Americans
- New US Residents
- Foreign Investment in the US
- Dual Status Taxpayers
- Foreign Trusts
- International Cryptocurrency
- New Business Formation
- Limited Liability Companies (LLC)
- Corporations
- S Corporations
- Foreign Qualification
- Entity Conversion
- Contracts
- Franchises
- Buying or Selling a Business
- Business Dissolution
- Lawsuits & Litigation
- Business Dispute Resolution
- Arbitration
- Mediation
Based in Denver, the firm serves clients globally and is equipped to handle multi-jurisdictional tax and legal issues, providing trusted support for international business expansion and compliance.
