Welcome to our Tax IRS Representation firm in Corona, CA.

SEBASTIANS TAX SERVICE AUDITS & REPRESENTATION is a full-service tax firm that represents clients before the IRS, and is licensed by the United States Department of Treasury in all tax matters as an Enrolled Agent, and prepares taxes in all 50 states. Read More...


  • Small Business Accounting

    As a small business owner you have more important things to do than to keep your own books. We take care of your books for you, so you can get back to the job of running your business and generating profits.

  • Business Valuation

    Objective valuation can make the difference between loss or gain, success or failure. You need professionals who are well qualified, with significant experience in evaluating all types of organizations.

  • Strategic Business Planning

    If you still have all your plans and ideas locked up inside your head, preparing a strategic plan can help you clarify your company's direction.

  • Succession Planning

    Developing and implementing a well-designed succession plan is essential to the survival of a family business from one generation to the next.

  • Internal Controls

    We assess your internal control systems to determine the efficiency and effectiveness of your operating procedures, then we make recommendations that help your company become stronger.

  • Personal Financial Planning

    You get one-on-one guidance and a comprehensive financial plan that helps manage risk, improve performance, and ensure the growth and longevity of your wealth.

  • Estate Planning

    The hassles and red tape associated with estate planning can be daunting, but you don't need to do it alone. Our team is waiting to assist you through every step of the process

  • Elder Care

    With our elder care services, you get the help of a caring, honest and knowledgeable professional. Someone on your team, looking out for your loved one's best interest.

  • Tax Preparation (Enrolled Agents)

    According to a study released by the US Government's General Accounting Office last year, most taxpayers (77% of 71 million taxpayers) believe they benefited from using a professional tax preparer.

  • Sebastian @ Trucker Taxes

    Specializing in complete income tax preparation for owner operators, company truck drivers and anyone who is affiliated with the trucking industry.

  • Tax Planning

    Planning is the key to successfully and legally reducing your tax liability. We go beyond tax compliance and proactively recommend tax saving strategies to maximize your after-tax income.

  • Tax Problems

    We're here to help you resolve your tax problems and put an end to the misery that the IRS can put you through. We pride ourselves on being very efficient, affordable, and of course, extremely discrete.

  • Owner and Lease Operators

    Whether you have all of your expenses totaled, have an overwhelming mountain of receipts, or just want to know how to better manage your tax liability and business- Sebastian's Tax Service offers solutions for every kind of operator. You can be confident in Sebastian's professional service and knowledge of the trucking industry.

  • Company Drivers

    Company driver tax returns are no less complicated than owner or lease operators. Complicated tax codes as well as trucking industry specific tax legislation applies to company driver tax returns. Most tax preparers are unaware of these more obscure parts of the tax code. Sebastian has studied the tax code as it applies to truckers and he is continually monitoring the changes that affect your tax return!

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I graduated from Rio Hondo College Whittier, CA with a two year (AA) Associates Degree in Business Administration in 1983, and received a football scholarship to University of Iowa. I earned a (BBA) Bachelors of Business Administration in 1987 with emphasis in advanced studies in (BAIS) Business Analytics and Information Systems, to use advanced mathematical and computation techniques to solve business problems.

In 1987- "Beginning with a general review of business management practices, progressing through transportation and supply chain management, and on to a comprehensive study of international logistics, I learned what I needed to know. It was a matter of translating an existing skill set and expanding my understanding into a viable credential that could be used to prove my knowledge." I also possessed a Class A license with all endorsements, as well as a Home Land security clearance. Click here to Read More...

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