International Tax Services
Cross-border tax expertise for a globally connected world
Lanphier LLP is one of the only small accounting firms in Colorado to specialize in international taxation. While many CPA firms treat cross-border matters as an afterthought -- or refer them out entirely -- we have built our practice around the complex intersection of US tax law and global commerce. Our Denver-based team brings the depth of knowledge typically found only at Big Four firms, delivered with the responsiveness, personal attention, and genuine partnership that define a boutique practice.
Our international tax services focus exclusively on the US tax implications of cross-border activities. We do not practice foreign law or prepare foreign tax returns. Instead, we coordinate closely with trusted counterparts in jurisdictions around the world to ensure that our clients receive seamless, comprehensive guidance on both sides of every transaction. This collaborative model allows us to stay deeply focused on what we do best -- navigating the intricate web of US international tax rules -- while ensuring that nothing falls through the cracks abroad.
Whether you are a US business expanding overseas, a foreign entity entering the American market, an expatriate living abroad, or a new resident navigating US tax obligations for the first time, our team has the experience and technical skill to guide you. International tax compliance is unforgiving -- penalties for missed filings can be severe, and the rules change frequently. Working with a firm that lives and breathes these issues every day is not a luxury; it is a necessity.
Our International Tax Services
We offer a comprehensive suite of international tax services tailored to the unique needs of businesses and individuals engaged in cross-border activities throughout the Denver metro area and beyond.
Cross-Border Business Taxation
- Outbound International Tax -- US businesses and individuals with operations, investments, or activities abroad
- Inbound International Tax -- Foreign entities and individuals operating or investing in the United States
- International Bookkeeping -- Specialized accounting and bookkeeping for multi-currency, multi-jurisdiction operations
Individual International Taxation
- US Expatriate Taxation -- Tax planning and compliance for Americans living and working overseas
- New US Residents Taxation -- Guidance for visa holders, green card holders, and new permanent residents
- Dual Status Taxpayers -- Navigating part-year resident and non-resident filing requirements
International Investments and Trusts
- Foreign Investment in the US -- Tax structuring for foreign nationals investing in US real estate and businesses
- Foreign Trusts -- Reporting and compliance for foreign trust arrangements (Forms 3520, 3520-A)
Compliance and Reporting
- Foreign Asset Reporting -- FBAR, Form 8938, and foreign bank account disclosure requirements
- FATCA Compliance and Form 1042-S -- Foreign Account Tax Compliance Act reporting and withholding
Dispute Resolution
- IRS Controversy -- International Tax -- Audit defense, penalty abatement, and dispute resolution for international tax matters
If you have cross-border tax questions or concerns, we invite you to schedule a consultation with our Denver team. International tax issues rarely resolve themselves, and early, proactive guidance is almost always less expensive than fixing problems after they arise.