Our firm strives to delight each single client. The comments and testimonies below are from our customers. You are welcome to review what others have said about us. If you wish to add your own testimonials, please click the Comments button below. Also, please feel free to contact us with any questions you may have - we'd love to hear from you. We pride ourselves on being proactive and responsive to our clients' inquiries and suggestions. 
It has been more than 15 years that ZKCO co is taking care of my wife and I in every respect of our financial needs. They are utterly selected of most refined, professional and they are holding highest place in the world of professionalism, in which they are rendering their services with honesty, accuracy, sincerity. -Amir Dowlatshahi, Irvine, CA
I have been a client of the firm since the mid 90's and for that reason,I have had the opportunity to not just meet some but all the staff at the firm, for that reason I do feel that in this day and age if a firm is capable to retain a client for over 15 years,that speaks volumes,in this day and age and with the abundance of all services,you would be hard pressed to find a firm that still calls and knows you by first name,and even sends reminders so you would not fall behind,I have used the firm on a business capacity,and for personal taxes,in one short sentence,I never feel there is anything to worry about when it comes to accounting/and taxation category,as long as I use this firm,and in this day and age,there is one less thing to worry about,great job to all of you,I remain... .- Borzoo Nehsat, Arlington, CA
ZKCO is an excellent CPA firm in Irvine. They are hard working, trustworthy and responsible. Their knowledge of difficult tax issues is extensive, and they are very client service oriented. I highly recommend the firm.
- Gina Chironis, CPA/PFS, MBA, Irvine CA
Many clients of a CPA firm, as it is with any “specialized “ field, may find it challenging to draw a direct correlation between the final product and the fees charged, since due to the lack of knowledge of the work, they often over simplify the process therefore concluding that the service may have been over valued.
I have had the fortune of working with ZKCO , both as a client and a management consultant for a period of time. I have experienced the superb service and witnessed the degree of care and due diligence they undertake, when dealing with their clients' financial affairs.
Every staff member at ZKCO has been cultured, to treat the client’s business as their own and not over look even the minute details . The partners take even a higher level of care in reviewing the work, and testing every possible scenario, in order to achieve the optimum results on behalf of their clients.
Building client relationship, is a key focus of the operation and a major contributor to the organization's long lasting success.
I have worked with several CPA and financial firms. Although most have been very professional, but none been a match for the superior technical expertise, and service that ZKCO provides its clients.
- Mahvash Howell, Director of Finance- GSFI, Anaheim, CA
I have known Majid Zarrinkelk for more than 20 years and have enjoyed the benefit of his and his staff professional advice consistently. They are very knowledgeable, thorough and diligent in their work.
I highly recommend ZKCO to anyone who is looking for sound financial advice and proper tax planning.
- Reza Ghaffari, Anaheim Hills, CA
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