McMahon & Tivnan, PC is a distinguished tax law firm specializing in federal and state tax controversies, serving individuals, estates, and businesses from its Boston base with a global reach. The firm’s attorneys bring a collective experience of over 100 years in handling complex IRS and state tax matters, setting them apart through a proven record of significant case victories and client-focused representation.
The firm adopts a strategic and thorough approach to tax dispute resolution, emphasizing compliance, penalty minimization, and assertive advocacy during audits, appeals, and litigation. Their expertise is particularly recognized in high-stakes international tax issues, voluntary disclosures, and civil tax controversies, making them a preferred choice for clients facing demanding tax examinations or non-compliance challenges.
Services Offered
- Civil Tax Controversy
- Tax Audit Defense
- Collections
- Appeals
- Litigation
- International Tax Controversy and Compliance
- FBAR and Offshore Asset Reporting
- Voluntary Disclosure
- International Tax Issues
- Domestic Tax Issues
- Estate Tax Matters
- State Tax Matters
Based in Boston, Massachusetts, the firm serves clients worldwide and has achieved notable successes, including multimillion-dollar IRS deficiency reductions, trial victories in state tax residency cases, and penalty abatements through IRS Appeals. Their attorneys are consistently recognized by Super Lawyers, underscoring their reputation for excellence in tax law.
