BP

Brian P. Tsu, Business Attorney in San Diego, California

focused on Business, Family Law, and Tax

San Diego, CA

Trusted business attorney serving San Diego.

2
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Brian P. Tsu is an attorney based in San Diego, CALIFORNIA. The practice focuses on Business, Family Law, and Tax.

Based in
San Diego, CALIFORNIA
Experience
attorney
Known for
Business · Family Law · Tax
  • Handles Business, Family Law, and Tax matters from San Diego, CALIFORNIA.
  • Recognized with Best Lawyers in America — Closely Held Companies and Family Businesses Law (2026).

About Brian P. Tsu: Brian P. Tsu is an attorney based in San Diego, CALIFORNIA. The practice focuses on Business, Family Law, and Tax.

Areas of practice

Practice areas handled by Brian P. Tsu

Brian concentrates on business, family law, tax, and trusts. Each area below outlines the kind of case Brian handles, typical outcomes to expect, and how the intake process starts.

Business cases in San Diego, California

Brian takes business matters in San Diego, California. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Brian agrees to represent you.

Family Law cases in San Diego, California

Brian takes family law matters in San Diego, California. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Brian agrees to represent you.

Tax cases in San Diego, California

Brian takes tax matters in San Diego, California. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Brian agrees to represent you.

Trusts cases in San Diego, California

Brian takes trusts matters in San Diego, California. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Brian agrees to represent you.

Biography

About Brian P. Tsu — Attorney of California business experience

Brian P. Tsu is an attorney based in San Diego, CALIFORNIA. The practice focuses on Business, Family Law, and Tax.

HFM Trusts & Estates Partner Brian Tsu is a Fellow of the American College of Trusts and Estate Counsel and California Certified Legal Specialist.

Mr. Tsu represents high-net-worth individuals in the areas of domestic and international estate planning, related areas of taxation and closely-held family business planning. He also advises fiduciaries in complex trust and estate administrations, particularly when tax or cross-border issues are present. His work includes:

International Estate Planning

Mr. Tsu advises individuals on the succession and tax aspects of planning for multinational family members and their property interests. In particular, he counsels U.S. clients regarding the disposition of foreign property, with a particular emphasis on business holdings; in conjunction with local counsel, through integrated U.S. and foreign-based estate plans. Such plans consider and navigate the differences in marital, property, succession laws applicable to the client’s multinational family and property interests. His international estate planning practice also provides succession and U.S. tax planning advice to non-U.S. clients with respect to their U.S. investments and wealth transfers to U.S. beneficiaries. He also counsels clients on the repatriation of foreign trusts, foreign trust reporting, and estate/gift tax treaty analysis.

Taxation

Mr. Tsu advises on all aspects of federal wealth transfer and fiduciary income taxation, as well as the wealth transfer aspects of California real property taxation. This includes the design and implementation of advanced wealth transfer techniques such as intentionally defective grantor trusts, intra-family installment sales, grantor retained annuity trusts, irrevocable life insurance trusts, qualified personal residence trusts and family limited partnerships/limited liability companies. In addition to federal wealth transfer tax advice, he advises fiduciaries on California fiduciary income taxation and tax compliance. He regularly prepares and reviews gift and estate tax returns and has successfully resolved estate and gift tax audits and appeals. He also has significant experience advising on the wealth transfer and income tax consequences of trust decantings, modifications, reformations, terminations, trust-to-trust transfers and beneficiary/fiduciary settlements. In addition to high-net-worth clients and fiduciaries, he has also advised certified public accountants, trust and estate litigators, and family law attorneys on tax matters related to trust and estate planning.

Closely-Held Family Business Planning

Mr. Tsu regularly advises clients on the organization, administration and succession of closely-held family businesses. The scope of his advice includes tax-efficient transfers of such business interests to the succeeding generation and planning for related considerations such as family dynamics, estate liquidity, sufficient cash flow, family business management structures, buy-sell agreements, and the mitigation of valuation risk through formula gift planning.

Mr. Tsu is a Fellow of the American College of Trust and Estate Counsel (ACTEC) and is a Certified Specialist in both (1) Estate Planning, Trust & Probate Law and (2) Taxation Law, each by the State Bar of California, Board of Legal Specialization. He has also been selected by his peers for inclusion in The Best Lawyers in America® in the area of Trusts and Estates since 2016.

Mr. Tsu serves as Vice Chair of the Estate and Gift Taxes Committee of the American Bar Association Section of Taxation and on the Taxation Executive Committee of California Lawyers Association. He is a member of the YMCA of San Diego County Gift Planning Advisors’ Council, the Executive Board of STEP San Diego, and of the San Diego chapters of the Boston College and University of Dayton Alumni Associations.

Mr. Tsu is a regular speaker and contributing member of the American Bar Association, Tax and Real Property, Trust & Estate Sections; the Society of Trust and Estate Practitioners (STEP); the State Bar of California, Taxation and Trusts & Estate Sections; the California Society of CPAs; and the San Diego County Bar Association, Estate Planning, Trust & Probate Section.

SPEAKING AND TEACHING ENGAGEMENTS

  • Qualified Severances – New GSTT Solutions in an Old Wineskin, American Bar Association – Section of Taxation’s Virtual 2020 May Tax Meeting, July 9, 2020 (Presenter)
  • U.S. Income Taxation of Foreign Trusts, California Lawyers Association-Taxation and Trusts & Estates Sections, February 26, 2019 (Co-Presenter)
  • Foreign Trusts, the CFC Rules and the New GILTI Tax, Society of Trust and Estate Practitioners–San Diego, February 19, 2019 (Co-Presenter)
  • Dual National Beneficiaries of Foreign Trusts: UNI, PFICs and GILTI Tax – Treasury Regulations Run Amok, University of San Diego School of Law Procopio International Tax Institute, November 2, 2018 (Co-Presenter)
  • California in the Lurch – Impact of TCJA on Individuals, Trusts & Estates, California Lawyers Association, Annual Meeting, September 15, 2018 (Presenter)
  • Things Every Domestic Estate Planner Should Know About International Law, Texas Bar CLE, Advanced Estate Planning & Probate, June 15, 2018 (Presenter)
  • Current Developments in Federal Transfer Taxes, American Bar Association, Tax Section–Estate & Gift Taxes Committee, May Meeting, May 11, 2018 (Co-Presenter)
  • Things Every Domestic Estate Planner Should Know About International Law, American Bar Association, Tax Section–Estate & Gift Taxes Committee, Midyear Meeting, February 9, 2018 (Co-Presenter)
  • Current Developments in Federal Transfer Taxes, American Bar Association, Tax Section–Estate & Gift Taxes Committee, Midyear Meeting, February 9, 2018 (Co-Presenter)
  • Estate and Gift Taxation of Nonresident Aliens, ALI-CLE, International Trust and Estate Planning, November 10, 2017 (Presenter)
  • Foreign Trusts: Beware of Tax and Divorce Consequences, State Bar of California Tax Section, Annual Meeting, November 3, 2017 (Co-Presenter)
  • Select Estate Administration Topics for Foreign Decedents and Foreign Beneficiaries, Probate Attorneys of San Diego, May 17, 2017 (Presenter)
  • Current Developments in Federal Transfer Taxes, American Bar Association, Tax Section–Estate & Gift Taxes Committee, May Meeting, May 12, 2017 (Co-Presenter)
  • Things Every Domestic Estate Planner Should Know About International Estate Planning, Dallas Estate Planning Council, March 2, 2017 (Co-Presenter)
  • Current Developments in Federal Transfer Taxes, American Bar Association, Tax Section–Estate & Gift Taxes Committee, Midyear Meeting, January 20, 2017 (Co-Presenter)
  • Planning for Foreign Investment in Real Property and FIRPTA for Trustees, American Bar Association, Real Property, Trust and Estate Section, May 12, 2016 (Co-Presenter)
  • Wealth Transfer Tax Planning for Nonresidents, Society of Trust and Estate Practitioners–Los Angeles, International Tax and Estate Planning Forum (Pre-Conference), May 4, 2016 (Co-Presenter)
  • Things Every Domestic Estate Planner Shoul

Working with Brian on a business matter

HFM Trusts & Estates Partner Brian Tsu is a Fellow of the American College of Trusts and Estate Counsel and California Certified Legal Specialist. Mr. Tsu represents high-net-worth individuals in the areas of domestic and international estate planning, related areas of taxation and closely-held family business planning. He also advises fiduciaries in complex trust and estate administrations,…

Clients Brian works with

Brian reviews new inquiries case-by-case for business, family law, and tax matters in San Diego and the surrounding California area.

Credentials

Brian P. Tsu's legal education and bar admissions

  • Northwestern University

    LL.M. · 2009

  • University of Dayton

    J.D. · 2004

  • Seton Hall University

    — · 2002

  • Boston College

    B.S. Accounting · 2000

Jurisdictions

Brian's state bar admissions

  • California, Admitted

    ACTIVE

  • Illinois, Admitted t

    ACTIVE

Brian studied at LL.M. in Northwestern University, J.D. in University of Dayton, and — in Seton Hall University.

Law school and academic background

Brian completed LL.M. in Northwestern University, J.D. in University of Dayton, — in Seton Hall University, and B.S. Accounting in Boston College. Formal legal training is one signal of substantive knowledge — the day-to-day practice Brian runs in California is where that training gets applied to real client questions.

Recognition

Awards, publications, and recognition of Brian P. Tsu

Brian has received 3 formal recognitions from bar associations, industry bodies, and peer-review services.

  • Best Lawyers in America — Closely Held Companies and Family Businesses Law

    2026

  • Best Lawyers in America — Tax Law

    2026

  • Best Lawyers in America — Trusts and Estates

    2026

Legal awards and honors

Best Lawyers in America — Closely Held Companies and Family Businesses Law (2026). Best Lawyers in America — Tax Law (2026). Best Lawyers in America — Trusts and Estates (2026).

Locations

Brian P. Tsu's office in San Diego

Brian's primary office is at 401 West A Street, Suite 2600, San Diego, California, 92101. In-person meetings are by appointment; a phone intake usually comes first.

Main office

401 West A Street, Suite 2600

San Diego, California 92101

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Client feedback

Client reviews of Brian P. Tsu

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Hiring guide

How to hire Brian P. Tsu — what to expect in your first consultation

Working with a new business attorney should feel structured. Here's how the first two conversations with Brian usually go, from the moment you request a consult to the day representation begins.

Consultation formats and pricing

Brian charges for the initial consult. That fee is credited toward representation if you retain Brian's office.

What to bring to your first meeting

Bring any documents you already have — police reports, medical records, filed pleadings, correspondence from an insurer, a copy of the contract at issue. If you're not sure, err on the side of bringing everything; Brian will tell you what matters and what doesn't.

Questions to ask a business attorney in San Diego, California

A short list to run through before you commit: How many business matters have you handled in the last year? What's your fee structure? Who else in the office will work on this? What's your realistic estimate of timeline and range of outcomes? How do I reach you between meetings?

Fees & payment

Fees, payment methods, and consultation options for Brian

Brian discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in business practice — ask which fits.

Hourly rates, contingency fees, and flat-fee options

Every business matter is priced differently. Simple document review might be a flat fee. Injury litigation is often contingency. Complex commercial disputes usually run hourly with a retainer. Brian confirms the model in the engagement letter before any work starts.

Payment methods and payment plans

Brian's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many business practices work with clients on structured schedules.

Frequently asked

Frequently asked questions about Brian P. Tsu

  • How much does it cost to hire Brian for a business case?

    Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Brian walks through the likely range during the consult so there are no surprises.

  • Does Brian offer a free consultation?

    Brian charges for the initial consult; that fee is credited toward representation if you retain Brian's office. Some business attorneys offer free consults — check Brian's current terms during booking.

  • How long do business cases in California typically take?

    Simple business matters can wrap in a few weeks; disputed cases can run 6–18 months from intake to resolution, longer if the matter goes to trial. Brian gives a realistic estimate for your facts at the consult — vague answers here are a red flag.

  • Can Brian take my case if I'm outside San Diego?

    Brian is licensed in California. Matters governed by California law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Brian will tell you if the case is a fit or refer you to someone closer to your court.

  • What should I bring to my first meeting with Brian?

    Bring every document that touches the dispute: contracts, correspondence, police or medical reports, filed pleadings, invoices, photographs, insurance letters. Also bring a written timeline of what happened, in your own words. Brian will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.

  • Is Brian accepting new business clients right now?

    Brian's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.

Areas served

Business attorneys serving San Diego, Los Angeles and San Francisco in California

Brian handles business matters throughout California. Each city below is a direct link into the search page for verified business attorneys in that community.

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