A tax firm built by people who answer the phone when the IRS writes.
TLR has served clients since 2013. Thirteen years later we are still one office in Santa Ana, staffed by federally licensed tax professionals, serving small businesses, startups and individuals across the country — in English and Turkish.
Compliance first, then strategy.
We keep businesses and individuals compliant with federal and state tax law — books, payroll, sales tax, returns — and we represent them when something goes wrong. Because the same team does both, our clients rarely need the second part.
Our practitioners are licensed by the U.S. Treasury after examination on tax law, with unlimited rights to represent taxpayers before the IRS in every state. Two of the team also hold graduate degrees in business and taxation, which shapes how we plan.
Meet the people on your file
Four people. You will know all of them by name.
Leadership

Ozhan Yuksel, EA, MBA
Principal & Owner · Santa Ana, CAI lead TLR, a firm that has served small businesses and individuals since 2013. I acquired it to give owner-run companies the kind of tax and accounting oversight larger companies take for granted: clean books, audit-ready records and someone licensed to speak to the IRS. My work centers on compliance, IRS issue resolution and building financial systems that let owners make decisions with confidence.
LinkedIn →
David Samuel Shashoua, EA, JD, LLM (Taxation)
Senior Tax Specialist · Santa Ana, CAI represent individuals and businesses in IRS audits, collections and appeals, and prepare complex corporate and partnership returns. I hold a law degree and a Master of Laws in Taxation, which I use for research and analysis of technically difficult tax questions.
LinkedIn →Our Associates
Cindy Le
Tax Accountant · Santa Ana, CACindy prepares individual and business returns and manages monthly bookkeeping for our accounting clients. She graduated from California State University, Long Beach, summa cum laude with a 4.00 GPA, and is completing the IRS examinations for federal representation licensure.
LinkedIn →
Balash Mirzayev
Business Development Manager · Irvine, CABalash is usually the first person you speak to. He runs onboarding and partnerships, makes sure new clients are matched with the right service and plan, and keeps the relationship working long after the first return is filed.
LinkedIn →One team, from the first invoice to the last IRS letter.
We answer the IRS for you
Audits, notices, collections and appeals, in all 50 states.
How it works →IRS Certifying Acceptance Agent
ITINs without mailing your passport.
About our CAA service →The record
| Legal name | Tax Law Research Inc., doing business as TLR |
|---|---|
| Serving clients since | 2013 — California corporation, Santa Ana office |
| Office | 3000 W MacArthur Blvd, Suite 650, Santa Ana, CA 92704 |
| Licences | Federally licensed IRS representatives (Treasury Circular 230) · IRS Certifying Acceptance Agent |
| Languages | English, Turkish |
| Clients | Small Businesses, Startups and Individuals in all 50 states; International Founders worldwide |
What clients say
Talk to us this week.
A free 15-minute call. Next step and a fixed fee, in writing. No hourly billing, no obligation.