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Trusted Tax Attorneys & CPAs in Irvine, CA
The Tax Law Offices Of David W Klasing is a boutique California tax law firm comprised of award-winning, nationally recognized Tax Attorneys and CPAs. With over 75 years of combined experience in tax and business law, we specialize in resolving complex state, federal, and international tax issues. Our team prioritizes clear communication, transparency, and client-centric solutions, offering services ranging from IRS audit representation to international tax compliance.

We serve clients throughout California and nationwide via satellite offices, emphasizing ethical practices, competitive billing, and zealous advocacy. Our unique approach combines legal and accounting expertise to deliver tailored strategies for individuals and businesses facing tax controversies.
Services
Tax Litigation IRS Audit Representation International Tax Compliance FBAR Filing Voluntary Disclosure Programs Business Tax Planning Criminal Tax Defense Estate Tax Planning Employment Tax Issues Cryptocurrency Tax Guidance
Details
  • Year established: 2003
Highlights and features
  • We offer over 75 years of combined tax and legal experience.
  • Our team provides clear, frequent communication with clients.
  • We operate with full transparency and no hidden fees.
  • Our attorneys are dually licensed as CPAs for comprehensive tax solutions.
  • We serve clients nationwide via satellite offices and virtual consultations.
Associations and certifications
  • AVVO Top-rated
What people say
Exceptionally helpful Professional and knowledgeable Worth every dime Prompt refunds Peace of mind
Services
Tax Litigation
Our firm represents clients in complex tax litigation matters, including IRS and state tax controversies. We specialize in defending against tax evasion allegations, penalty abatements, and appeals. With dual expertise as attorneys and CPAs, we craft strategic arguments grounded in tax code and case law to minimize liabilities and protect client interests.
IRS Audit Representation
We provide comprehensive representation during IRS audits, ensuring compliance while safeguarding client rights. Our team prepares documentation, communicates with auditors, and negotiates settlements. Our proactive approach aims to resolve audits efficiently, avoiding criminal charges and reducing financial exposure through tailored compliance strategies.
International Tax Compliance
Our services address cross-border tax challenges, including FBAR filings, FATCA compliance, and offshore voluntary disclosures. We assist U.S. citizens with foreign accounts and international businesses navigating U.S. tax obligations. Our solutions mitigate penalties and align with evolving global tax regulations for expatriates and multinational entities.
Voluntary Disclosure Programs
We guide clients through IRS and state voluntary disclosure programs to resolve unreported income or accounts. Our process includes risk assessment, preparing disclosures, and negotiating penalty reductions. This service helps clients achieve compliance while minimizing criminal exposure and financial penalties for past non-disclosure.
Business Tax Planning
We assist businesses with tax-efficient structuring, entity selection, and compliance strategies. Services include sales tax audits, employment tax guidance, and succession planning. Our integrated legal and accounting expertise ensures businesses optimize tax positions while adhering to federal and state regulations for sustainable growth.
People
David W. Klasing
Managing Attorney, CPA
David W. Klasing is a nationally recognized tax attorney and CPA with over 20 years of experience in resolving complex tax issues. He specializes in IRS audits, criminal tax defense, and international compliance, combining legal and accounting expertise to protect client interests. A private pilot, he facilitates nationwide client access through satellite offices.
John A. Harbin
Of Counsel
John A. Harbin is a retired CPA and seasoned attorney with extensive experience in tax law and business litigation. He provides strategic counsel on complex tax disputes and regulatory compliance, leveraging decades of experience to support the firm's high-stakes cases and client advocacy.
Marc Schwartz
Of Counsel
Marc Schwartz is a certified public accountant and attorney specializing in tax controversy and business law. He focuses on audit defense, tax planning, and resolving employment tax issues, offering clients dual expertise in accounting and legal strategy to achieve favorable compliance outcomes.
Questions
What should I do if I receive an IRS audit notice?
Contact a tax attorney immediately to protect your rights. We will review your case, prepare documentation, and represent you throughout the audit process to minimize penalties and resolve issues efficiently.
How can I report unfiled foreign bank accounts?
Use IRS voluntary disclosure programs to report unfiled foreign accounts. We will guide you through the process, including FBAR filings and penalty negotiations, to achieve compliance while reducing criminal exposure.
What is an Offer in Compromise?
An Offer in Compromise allows settling tax debt for less than owed. We assess eligibility, prepare documentation, and negotiate with the IRS to secure favorable terms for clients facing financial hardship.
Can I reduce penalties for late tax filings?
Yes, we challenge unwarranted penalties through appeals or abatement requests. Our team leverages legal expertise to demonstrate reasonable cause or IRS errors in penalty assessments.
Do you offer virtual consultations for out-of-state clients?
Yes, we provide secure virtual consultations via phone or video conferencing for clients nationwide, ensuring accessible, confidential tax guidance without geographic limitations.
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