Atty. Ruben Sislyan

Atty. Ruben Sislyan

Ruben Sislyan focuses his practice on California state and local tax controversies at the audit, administrative, and judicial levels. He has broad experience representing Fortune 500 and middle-market companies, closely held businesses, start-ups, families, and individuals in a wide range of state and local taxes, including corporate franchise/income, personal income, sales and use, property, tobacco, and gross receipts and other local taxes.

Los Angeles Los Angeles 14 yrs experience 14 year
Call (310) 586-7700 Email Book Appointment

Profile Summary

About Ruben Sislyan at a glance

Ruben Sislyan is a Shareholder based in Los Angeles, California, practicing at Greenberg Traurig, LLP. They have 14+ years of legal experience, licensed to practice since 2012. Their practice focuses on tax. Admitted to practice in California U.S. District Court for the Central District of California U.S. Tax Court (2012). Educated at Loyola Law School, Los Angeles (J.D. Concentrations, 2012) and University of Southern California (M.A. Economics, 2007). Serands clients in Los Angeles, CA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Ruben Sislyan focuses his practice on California state and local tax controversies at the audit, administrative, and judicial levels
  • He has broad experience representing Fortune 500 and middle-market companies, closely held businesses, start-ups, families, and individuals in a wide range of state and local taxes, including corporate franchise/income, personal income, sales and use, property, tobacco, and gross receipts and other local taxes
  • Ruben helps clients navigate through all stages of California’ s complex administrative tax controversy process
  • He regularly practices before California’ s state and local tax agencies and tribunals, including the Franchise Tax Board, the California Department of Tax and Fee Administration, the State Board of Equalization, the Office of Tax Appeals, and the Los Angeles Office of Finance
  • Ruben also has experience representing clients in California courts and challenging unlawful taxes
  • Recognition & Leadership Awards & Accolades • Listed, The Best Lawyers in America, 'Ones to Watch,' Tax Law, 2024-2025

Practice Areas Explained

Ruben Sislyan's Areas of Practice

Each practice area below reflects the types of cases Ruben Sislyan handles, with a brief overview of what that area of law covers.

Tax Law

Tax attorneys handle IRS audits, tax debt, international tax, estate planning, and tax court litigation.

Ruben Sislyan is one of 85,302 tax attorneys indexed nationally. Browse tax attorneys in California →

Jurisdictional Context

Why local counsel matters in California

Practicing law in California. Legal matters in California are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Los Angeles are typically filed in the local municipal court or the appropriate California state district court, depending on subject matter and amount in controversy. An attorney licensed in California brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in California courts without local counsel or pro hac vice admission.

Looking for additional California attorneys? Browse all attorneys in Los Angeles or all attorneys in California.

Frequently Asked

Common questions about Ruben Sislyan

Where is Ruben Sislyan's law office located?
Ruben Sislyan's law practice is located in Los Angeles, California. The firm is Greenberg Traurig, LLP. You can contact the office directly through this profile page.
What practice areas does Ruben Sislyan handle?
Ruben Sislyan focuses on tax. Each practice area listed reflects experience handling cases of that type in California.
How long has Ruben Sislyan practiced law?
Ruben Sislyan has 14+ years of legal experience and has been licensed since 2012.
Where did Ruben Sislyan go to law school?
Ruben Sislyan earned their education at (J.D. Concentrations, 2012); (M.A. Economics, 2007).
How can I contact Ruben Sislyan for a consultation?
You can contact Ruben Sislyan directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.

Practice Areas

Education

J.D. Concentrations
Loyola Law School, Los Angeles
- 2012
M.A. Economics
University of Southern California
- 2007

Bar Admissions

California U.S. District Court for the Central District of California U.S. Tax Court
Admitted: 2012

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