About Us

Why Choose a Diosdi & Liu, LLP Tax Attorney

At the tax law firm of Diosdi & Liu, LLP we assist clients in working effectively with the IRS to resolve tax controversy and tax collection matters. We represent clients in audits, administrative appeals, and litigation in federal and state courts, providing tax related advice, and representing individuals and business entities in criminal tax investigations and prosecutions. We have tried dozens of cases before the United States Tax Court, Court of Federal Claims, and U.S. district courts involving civil and criminal tax controversies, employment tax disputes, and the dischargeability of tax in bankruptcy.

If you have a tax dispute with the IRS or a state taxing agency, you may believe that you do not have any options. This is not the case. At Diosdi & Liu, LLP, our tax attorneys are experienced in resolving IRS tax disputes. We have decades of experience representing individuals and businesses wrongfully accused of owing taxes and penalties to the IRS. We can assist you through every aspect of your tax controversy, including audits, audit appeals, and trials. Before you communicate with the IRS or a tax accountant (who can be called as a witness to testify against you), contact the highly-skilled tax attorneys at Diosdi & Liu, LLP.

Why Choose a Diosdi & Liu, LLP International Tax Attorney

The tax law firm of Diosdi & Liu, LLP provides global tax planning advice and representation. We are international tax attorneys and we dedicate a significant portion of our practice to international tax matters. We advise U.S. clients, including various Fortune 500 companies and major privately held businesses on outbound corporate and tax planning, including Subpart F, GILTI, and FDII matters. We also provide planning advice and prepare international informational returns such as the IRS Form 5471 and Form 3520. We counsel foreign clients on their inbound investments in the United States, including the taxation of SaaS transactions, taxation of digital transactions, U.S. tariffs, financing, U.S. real property, corporate restructuring, cross-border mergers and acquisitions.

We have extensive experience in handling cross-border disputes. We are one of a select group of litigators who successfully litigated 3520 penalty controversies and we may be the only group of attorneys who has ever successfully contested an FBAR penalty under the Administrative Procedure Act. We have petitioned the U.S. district court contesting foreign summons for U.S. bank records under a treaty provision and we have extensive experience requesting treaty competent authority assistance. In addition, we have served as an expert witness in a case before the High Court of London regarding the U.S.-U.K. estate, gift, and generation skipping tax treaty.

We have written for publications such as Thomson Reuters Checkpoint, the Florida Bar Tax Section Bulletin, California Tax Lawyer, and the Real Estate Tax Digest. We have been featured as well as quoted in publications such as Tax Notes, Bloomberg Law, Herald Sun, Australia, and Telex Hungary News. Our attorneys are also frequent lecturers, panelists, and contributors at national conferences on the topics of international taxation.

Our firm was organized to fill a need that was not addressed in the general tax community. We are international tax attorneys and we dedicate a significant portion of our practice to international practice. Our experience allows us to provide our clients with cutting edge advice in the area of international tax.

Why Choose a Diosdi & Liu, LLP Criminal Tax Attorney

We represent clients in high-stakes white-collar criminal defense and IRS criminal investigations. We have represented and litigated criminal cases including tax evasion, tax preparer, FBAR, money laundering, currency structuring, bankruptcy fraud, and other final matters. We have represented hundreds of clients in voluntary disclosures, FBAR penalty exams, and criminal tax investigations related to unreported income and foreign financial assets. Our practice includes working towards resolution with the IRS at all stages, often beginning at the initial contact by a civil or criminal IRS investigator. We have also worked extensively on both IRS Criminal Investigation Division and federal grand jury investigations. Finally, we have served as lead counsel with respect to Tax Court proceeds involving quasi-criminal matters and successfully filed motions with the court to exclude IRS Criminal Special Agents from trial and to exclude sensitive privileged documentary evidence.

If you are under investigation by the IRS or a taxing agency related to income tax, or are being investigated by the FBI or United States Attorney, you may believe that you do not have any options. This is not the case. At Diosdi & Liu, LLP, our tax attorneys are experienced in both tax law and criminal law. We vigorously advocate for our clients and consider unique defenses. We have decades of experience representing individuals and businesses accused of tax and white collar crimes. We can assist you through every aspect of your criminal matter, including audits, criminal investigations, pre-indictment, indictment, plea negotiations, motion practice, and trial, even at the appellate court level.

Helping With Every Stage of the Tax Process

Taxes can always be a stressful issue, even if everything goes as planned. However, if the IRS challenges certain aspects of your taxes, the situation can be downright frightening. Make sure you do not subject yourself to unnecessary penalties by not having the right legal assistance. Contact our experienced attorneys at SF Tax Counsel right away if you have any concerns.

Tax Issue Prevention

Often, the best way to prevent any issues with your taxes is to seek help from an experienced professional who understands how to ensure compliance with all relevant tax laws. Our law firm of Diosdi & Liu, LLP helps consumers, partnerships, and corporations with tax preparation, including filing past returns when necessary.

Our lawyers know how to apply the changing federal tax laws to your situation to implement a tax plan that benefits you or your company. We can plan for even the most complicated financial situations, including for unexpected life events, earnings, and more.

Tax-Related Complications and Defense

When you receive notifications from the IRS, it is generally not positive news. Often, the IRS is either trying to collect on unpaid tax debts or is conducting an audit of your taxes. In either situation, our tax attorneys can help.

We regularly help clients negotiate payments solutions with the IRS that disrupt their lives as little a possible. We also defend clients during audits and against any allegations of criminal tax fraud or evasion.

Contact Our San Francisco Tax Law Firm for More Information

At Diosdi & Liu, LLP, our goal is to help clients with any tax-related issue that may arise and to prevent issues from arising in the first place. We know taxes are complicated, and we’re ready to help. With offices in California and Florida, our firm helps clients throughout the United States. Call 833.829.4376 or contact us online to request an appointment to discuss your situation.