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Trusted Tax & Business Legal Solutions in Denver
We are a Denver-based legal practice specializing in tax law, business law, and international tax compliance. Our firm combines legal expertise with accounting proficiency to provide comprehensive solutions for businesses and individuals navigating complex tax and legal challenges. With decades of combined experience, our attorneys offer strategic counsel on business formation, contract negotiations, tax controversies, and international tax obligations. We prioritize client confidentiality, responsiveness, and practical solutions tailored to each client's unique needs.

Our integrated approach with Lanphier LLP, a full-service CPA firm, allows us to deliver seamless legal and financial advisory services under one roof. We serve a global clientele, providing guidance on offshore voluntary disclosure programs, FATCA compliance, and cross-border tax planning. Our commitment to excellence is reflected in our track record of resolving IRS audits, tax court petitions, and business disputes while maintaining the highest ethical standards.
Services
Tax Law Business Formation International Tax IRS Audit Defense Contract Negotiation FATCA Compliance Business Dissolution Tax Controversy Entity Conversion Offshore Disclosure
Highlights and features
  • We offer combined legal and accounting expertise through our partnership with Lanphier LLP
  • Our attorneys specialize in complex international tax compliance and FATCA reporting
  • We provide strategic business counsel from formation to dissolution
  • We maintain strict client confidentiality for sensitive tax matters
  • Our team has decades of experience resolving IRS audits and tax controversies
What people say
Quality care Peace of mind Expertise Round the clock Outstanding service
Services
Tax Law
Our tax law practice addresses complex compliance and controversy matters for businesses and individuals. We provide strategic planning, audit defense, and resolution of unfiled tax returns while ensuring adherence to evolving federal regulations. Our integrated legal and accounting approach delivers comprehensive solutions for domestic and international tax challenges.
Business Formation
We guide entrepreneurs through selecting and establishing optimal business structures including LLCs, corporations, and S corporations. Our services cover state registration, federal tax classification, and compliance documentation to ensure proper legal and tax foundations for new ventures.
International Tax
Specialized expertise in cross-border tax compliance and reporting obligations. We assist with FATCA disclosures, offshore voluntary programs, and inbound/outbound investment structuring. Our services address unique challenges faced by expatriates, dual-status taxpayers, and businesses with international operations.
IRS Audit Defense
We represent clients in IRS examinations, appeals, and litigation. Our approach focuses on minimizing liability through documented substantiation while leveraging procedural safeguards. We handle complex cases involving unreported foreign income, offshore accounts, and tax court petitions.
Contract Negotiation
Our firm drafts and reviews business contracts, leases, and purchase agreements to protect client interests. We identify potential liabilities and negotiate terms that align with strategic objectives while ensuring enforceability under applicable legal frameworks.
People
Hampton Lanphier
Attorney & CPA
Dual-qualified attorney and certified public accountant with extensive experience in tax law and business representation. Provides integrated legal and accounting solutions for complex domestic and international tax matters.
Brittany S. Lanphier
CPA
Certified public accountant specializing in tax compliance and advisory services. Collaborates with legal team to deliver comprehensive financial and tax planning solutions for businesses and individuals.
Questions
What tax services do you specialize in?
We focus on international tax compliance, FATCA reporting, IRS audit defense, business tax planning, and resolution of unfiled tax returns.
Can you help with business formation?
Yes, we assist with LLCs, corporations, S corporations, and foreign qualifications, providing both legal and tax structure recommendations.
Do you handle international tax issues?
Our firm specializes in cross-border tax matters including offshore disclosure programs, expat taxation, and inbound/outbound investment structuring.
Are legal and accounting services separate?
While we collaborate with Lanphier LLP for accounting services, clients may engage either or both services based on their needs.
What are office hours for consultations?
Our Denver office is open Tuesday-Thursday 9am-6pm. Virtual consultations available by appointment outside these hours.