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David W. Klasing is one of the best Tax Attorney and CPAs in California.

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Tax Attorney for Domestic and International Tax Issues

Serving All of California, the U.S., and Internationally for Federal & California Tax Issues

The Tax Law Office of David W. Klasing is a boutique California tax firm comprised of award-winning, nationally recognized Tax Attorneys and CPAs. We combine over 20 years of tax & business experience, drawing upon a diverse range of professional backgrounds in tax and business law and accounting, to help individual taxpayers and business entities resolve even the most complex of state, federal, and international tax issues. We understand how stressful it is for taxpayers to deal with agencies like the IRS, which is why we emphasize clear, frequent communication with our clients. Our goal is to obtain the best possible outcome from your case, no matter how high the stakes – and we will work diligently to achieve favorable results. Handling civil, criminal, domestic, and international tax matters, we serve clients throughout Northern California and Southern California, including Bakersfield, Carlsbad, Irvine, Los Angeles, Oakland, Oxnard, Panorama City, Sacramento, San Bernardino, San Diego, San Francisco, San Jose, and Santa Barbara. For a reduced-rate consultation, contact us online, or call (800) 681-1295 today.


The clients of the Tax Law Office of David W. Klasing have a long history of sleep problems when faced with incredibly emotional and high-stakes scenarios like the following:

  • Facing exposure and consequences for tax crimes where they have consistently cheated on their tax filings and now find themselves under an IRS audit.
  • Being approached by an IRS Criminal Investigation Agent wearing a gun, badge, and handcuffs at 6:30 in the morning whom proceeds to question you about your previous year tax filings.
  • Having your soon to be ex-wife or husband accuse you of tax fraud in divorce court.
  • Being interviewed by the IRS or EDD as part of a responsible party determination for personal assessment of payroll taxes or, worst of all, as part of a possible employment tax fraud investigation.
  • Learning that a whistleblower tax fraud claim has been submitted against you to a taxing authority.
  • Receiving a summons to appear in front of a taxing authority.
  • Learning that your bank records have been summoned or that a taxing authority is speaking to your employees or third parties about you.
  • Being approached by the taxing authorities after a long history of not filing income tax, sales or excise tax returns.
  • Receiving a letter from a foreign bank stating that they are about to release information regarding your foreign account and investments to the IRS knowing that you have not been reporting the associated investment or business income that has been deposited into that account.
  • Learning that a tax authority is attempting to assess a huge tax liability against you as the result of an tax audit and they appear to have gotten the law or the facts wrong in the process.
  • Winding up deeply in debt to the taxing authorities in the wake of a business failure, medical emergency, or through simply consistently living beyond your means, and having your bank account or wages garnished.
  • Finding out the taxing authorities are challenging your status as a real estate professional and realizing the crushing debt that you will face if your real estate losses are recaptured.
  • Finding out the tax shelter you were selling or investing in to offset taxable income has just been declared illegal.
  • Realizing that you are in the 50% tax bracket and ½ of what you make goes to the state of California and the IRS and you just can’t seem to make ends meet.
  • Fortunately for my clients, my staff and I have become quite adept over the years in engaging in damage control, at worst, and, ideally, taking the offensive against the taxing authorities. At the same time our tax professionals endeavor to minimize the stress that accompanies high-stakes tax problems which can often threaten a client’s financial well-being and, quite often, their very liberty.

    About our Tax Law Firm

    The tax attorneys at The Tax Law Offices of David W. Klasing believe that every client’s individual needs should be paramount and front and center to each engagement. We will never put our firm’s inherent need to make a profit, so that we can feed our families, ahead of our clients’ needs for effective, zealous, aggressive, creative, efficient and loyal legal tax representation, accounting and tax compliance services. For example, at any of our California locations of our tax law firm we will never counsel a client towards litigation where a fair settlement can be reached without it out of our own self-interest.

    Moreover, we will never take a client’s matter where we do not believe the client will be better off for having engaged us from the outset. We will protect our clients from themselves when necessary. We strive for 100% client satisfaction. We believe that our billing should be transparent and therefore we bill on an hourly basis at the billing rate of the tax lawyer or CPA professional providing the service and always where possible push a client’s work down to the lowest billing rate for the service provided within our organization. We are active members of the community in Los Angeles and Irvine and members of Orange County Bar Association.

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    Featured On:

    Tax Law Offices of David W Klasing BBB Business Review
    Fox Business lawyer review
    American Express
    Orange County accountants
    American Academy of Attorney-CPA
    Best Lawyers for Tax Law -


    We strive, to the full extent possible, to get the buy in of our tax law clients to our individualized case strategy from the outset of an engagement and strive to keep our client’s fully informed as to the progression in their specific tax situation or case. As a tax lawyer with the highest integrity, our billing is delivered on a weekly basis via an e-mail using full descriptions of the work performed to enable the client to be fully apprised of where their money is going and why.
    We strive to respond to client inquires in real time and strive to create a sense within each individual client that they our single most important client no matter the amount of revenue generated by the engagement. We under-promise and over-deliver while adhering to the strictest of professional ethics for tax lawyers but aggressively go the distance for our clients.

    Need Additional Tax Assistance?

    Perhaps you are under investigation for tax evasion and need the assistance of a criminal tax defense attorney. Perhaps you are thinking of starting a business and have questions about your tax planning strategy. Or perhaps you are a U.S. citizen with a checking account in your country of origin and want to ensure that you are complying with laws like FATCA. Whether your tax matter is civil or criminal in nature – whether it involves state, federal, or international tax regulations – rely on our knowledgeable team of tax professionals for zealous, around-the-clock support and representation. To arrange a reduced-rate consultation, contact the Tax Law Office of David W. Klasing online, or call (800) 681-1295 today.



    David W. Klasing ESQ., MS-Tax, CPA, and the highly qualified and experienced staff of Attorneys, Certified Public Accountants and Enrolled Agents he has assembled, have a very unique and hard to find skill set. Over the past several years, the demands for the firm’s services have proven to extend to all of Southern California and beyond. Since the opportunity costs involved with traveling to one of our satellite offices, where a client misses an appointment for any reason are astronomical, we require the client to first personally attend either a one hour reduced rate initial consultation in Irvine, California, or virtually via the internet through Go-To-Meeting software, or by phone. Thereafter, if needed, we will book an appointment at one of our appointment only satellite offices.

    Will it cost me more to hire the Tax Law Offices of David W. Klasing, who’s main office and the vast majority of the firm’s staff is located in Irvine California but a Satellite office is close to my location, as opposed to a local company?

    To enable our clients and potential clients to be indifferent on this very valid concern, we employ the following policies that enable our firm to affirmatively answer with a resounding “NO” to this question.

    Policy 1:  Where possible and deemed advantageous, we will attempt to resolve your issues by correspondence with the taxing authorities and where not possible we will attempt to relocate your issue to a local office of the appropriate taxing agency.   This will eliminate or substantially reduce travel expenses and typically gives us more time to properly prepare as this process takes time and the request to move an issue between offices is often granted.   Moreover, if the issue has criminal implications, quite often the government’s suspicions can be advantageously “lost” in the shuffle.

    Policy 2:  Where it is not possible to employ the actions described above,   we will discount our travel expense to approximate the travel time and expenses involved in interacting with one of our local taxing agencies.

    Klasing plane

    Policy 3:  David Klasing strategically co located each satellite office with a local IRS service center and a local airport to facilitate our office efficiently servicing remote client’s by Air.  Mr. Klasing, in addition to being a perfect 10 AVVO rated Tax Attorney, with a Master Degree in Taxation and a stellar CPA, has his private pilot license, is instrument rated and owns a Cirrus SR22. He flies out of John Wayne Airport, collocated near the Irvine Main Office, to expedite travel in the Southern California area.  For example a round trip drive to the Los Angeles office is often a 3.5 to 4 hour drive and the flight from John Wayne to Santa Monica Airport only takes 18 minutes. It is our policy never to charge our clients for the direct and indirect costs of Dave’s local air travel.

    Policy 4:  We compete based on providing above and beyond, effective and zealous representation for our clients, (see our testimonials and our A+ BBB rating) utilizing competitive billing rates which are often substantially lower than our competition,  hiring only the most qualified, experienced and educated staff that are commercially available, passing work down to the lowest billing rates in our organization where possible for the type of work performed,  striving to never take on a client who’s circumstances cannot be improved sufficiently to fully justify our fees.  We will always place our client’s needs for affective, loyal and honest representation to obtain the optimal results in each individual client circumstance above the firms inherent need to make a profit.