Carlsbad Criminal Tax Attorney

Written by Sam Brotman, J.D., LL.M. (Taxation), MBA — Managing Attorney, Brotman Law  ·  Updated May 2026

IRS Criminal Investigation in Carlsbad

The IRS Criminal Investigation San Diego Field Office handles criminal tax investigations for the Carlsbad area. IRS-CI special agents are distinct from IRS Revenue Agents (who conduct audits) and Revenue Officers (who handle collections). They are criminal investigators, and their contact should be treated accordingly.

IRS-CI opens investigations based on referrals from IRS Examination, information from financial institutions, whistleblower tips, and intelligence from other federal and state agencies. Once an investigation is opened, the agents conduct financial analysis, gather records through summonses and grand jury subpoenas, and interview witnesses. The target of the investigation may be the last person interviewed — or may never be interviewed at all before an indictment.

Federal criminal tax cases are prosecuted by the U.S. Attorney’s Office for the Southern District of California in the U.S. District Court for the Southern District of California. The Tax Division of the U.S. Department of Justice reviews and approves most criminal tax indictments before they are returned.

When You Need a Criminal Tax Attorney in Carlsbad

The signs that an IRS matter has crossed into criminal territory are specific. If you encounter any of the following, stop cooperating with the IRS and contact a criminal tax attorney immediately:

• Unannounced visit by IRS-CI special agents: Special agents identifying themselves as IRS Criminal Investigation agents are not examiners or collection officers. Do not answer any questions. Ask for their business cards, say you will not speak without an attorney present, and end the conversation.
• Grand jury subpoena: A federal grand jury subpoena requiring you to produce documents or testify means a grand jury is investigating potential criminal activity. Contact a criminal tax attorney before responding to any grand jury subpoena.
• IRS-CI summons: A formal IRS summons issued by an IRS-CI special agent (as opposed to a Revenue Officer) is a criminal investigative tool. It is different from a collection summons and should be treated differently.
• Notice that you are the subject or target of a federal investigation: If you are told — by a federal agent, a third party, or through a target letter — that you are the subject or target of a federal investigation, retain criminal defense counsel immediately.
• Civil audit turning adversarial: An eggshell audit — a civil examination where the examiner appears to be looking for fraud indicators — can convert to a criminal investigation. If an examiner is asking unusual questions about your intent or lifestyle, the audit may be more than civil.

Federal Criminal Tax Prosecutions

Federal criminal tax prosecutions in the Carlsbad area are brought in the U.S. District Court for the Southern District of California by the U.S. Attorney’s Office for the Southern District of California. The primary federal criminal tax statutes are:

• 26 U.S.C. § 7201 — Tax Evasion: A felony. The government must prove an affirmative act of evasion (not mere failure to pay), willfulness, and a tax deficiency. Penalties include up to 5 years imprisonment and a $250,000 fine.
• 26 U.S.C. § 7202 — Failure to Collect or Pay Over Tax: A felony. Applies to employers who withhold payroll taxes from employees but do not remit them to the IRS. This is the criminal employment tax statute.
• 26 U.S.C. § 7203 — Willful Failure to File: A misdemeanor. Failure to file a return, pay tax, or keep records, when willful. Penalties up to 1 year imprisonment per count.
• 26 U.S.C. § 7206 — False Returns: A felony. Filing a materially false return under penalty of perjury. Each false entry can be a separate count.

The government must prove willfulness beyond a reasonable doubt for most criminal tax offenses. Willfulness in the criminal tax context means a voluntary, intentional violation of a known legal duty — not merely negligence or mistake. Challenging the government’s evidence of willfulness is often the central issue in criminal tax defense.

See our criminal tax defense practice page and our eggshell audit page for more on how we approach criminal tax matters.

Local Context: How Criminal Tax Defense Actually Works in Carlsbad

Federal tax matters in Carlsbad are handled out of the IRS San Diego field office at 880 Front Street, Suite 2226, San Diego, CA 92101. Carlsbad is in North County coastal, about 35 minutes north of downtown San Diego on the I-5. IRS field activity for Carlsbad cases routes to the downtown office. The downtown federal complex houses the IRS, the U.S. Attorney’s Office for the Southern District of California, and (across the plaza) the Edward J. Schwartz United States Courthouse — where most federal tax matters affecting Carlsbad residents are litigated when they reach district court.

For practical purposes, that means:

• IRS field interactions — Revenue Officer territory meetings, Office Audit appointments, and IRS-CI subject interviews typically happen downtown rather than at a satellite office.
• U.S. District Court for the Southern District of California — refund suits, criminal tax indictments, and § 7402 collection actions are heard at the Schwartz Courthouse at 221 W. Broadway. Cases involving high-net-worth taxpayers, biotech and technology executives, and §1202 qualified small business stock issues are common in this jurisdiction.
• U.S. Bankruptcy Court for the Southern District of California — discharge of older federal tax debts is litigated at 325 W. F Street, three blocks from the IRS office. Bankruptcy and IRS collection often interact more than most clients expect.
• U.S. Tax Court calendars — the Tax Court does not have a permanent San Diego location, but it sends judges to San Diego two to three times a year for trial sessions. Carlsbad taxpayers typically litigate Tax Court matters here rather than traveling to Los Angeles or San Francisco.
• California FTB / CDTFA / EDD — the state agencies have local offices serving Carlsbad: FTB at 7575 Metropolitan Drive, CDTFA at 15015 Avenue of Science (Rancho Bernardo), and EDD at 4641 Frazee Road. Most California state tax matters originating in Carlsbad are handled out of these offices.

Carlsbad has one of the highest concentrations of biotech, life sciences, and technology companies in the country — and the executive and equity-holder population that comes with it. IRS collection matters out of Carlsbad more often involve equity-compensation tax balances (ISOs and NSOs with no funding plan), partnership and S-corp basis issues for founders, §83(b) elections gone wrong, and high-net-worth balances that came from an exit, an IPO, or a large equity event. The resolution conversation in Carlsbad almost always involves more than just the immediate IRS debt — it involves what the next equity event looks like and how to structure around it.

About Sam Brotman

I am the managing attorney at Brotman Law. I hold a J.D. from the University of San Diego School of Law, an LL.M. in Taxation, and an MBA. I am a member of the California State Bar (Bar No. 274966) and admitted before the U.S. Tax Court. I have been named a Super Lawyer every year since 2016. Brotman Law has resolved more than 2,500 tax matters and over $1 billion in combined tax liabilities since 2013. Criminal tax defense requires both tax expertise and criminal procedure knowledge — I bring both to Carlsbad-area clients.