Partners

Sharff, Wittmer, Kurtz, Jackson, & Diaz P.A

Sharff, Wittmer, Kurtz, Jackson, & Diaz, P.A. has been providing professional services in South Florida for over 60 years. As a full service firm, we offer a variety of services including Taxation, Auditing, Accounting and Advisory Services, Management Consulting, & Litigation Support. We help our clients cope with an increasingly complex business world. Our commitment to the business community, the accounting profession, and the individual clients we serve has as its foundation our guiding principles of service, experience, integrity and adherence to excellence.

  • Luis E. Diaz, C.P.A.
    Managing Partner
    Luis is the Managing Partner and has been practicing with our firm since 1997. He was promoted to partner in 2000. He has over 20 years of experience in the accounting field including: three years of experience in auditing with EY, a global leader in assurance, tax, transactions and advisory services. His extensive base of experience includes (1) advisory services to clients on accounting and tax matters, business acquisitions, sales and valuations (2) litigation support services to attorneys, providing calculations on loss of earnings, business valuations, divorce matters, contractual disputes, searches for hidden assets, as well as consultation on complicated accounting services. (3) audit, review, accounting and tax responsibilities range from small to large closely held entities in various industries including legal and medical professional service corporations, manufacturing, real estate, retail, healthcare, and others. Luis is a member of the American Institute Of Certified Public Accountants and the Florida Institute Of Certified Public Accountants.
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  • Amy K. Beenken, C.P.A.
    Partner

    Amy has been practicing with our firm since 2012 and was promoted to partner in 2016.  She has nearly 15 years of public accounting experience providing a wide range of tax services to small- and medium-sized businesses.  Amy has extensive knowledge in the area of corporate taxation and ASC 740, including experience in diverse industries such as manufacturing, wholesaling/distributing, renewable energy, real estate, and professional practices, among others.  She has substantial experience with planning for corporate mergers and acquisitions, restructurings, and international operations.  Amy also provides valuation services to owners of closely held businesses for gift tax, estate tax, and transactional purposes.  In addition, she works with our other tax professionals to provide international tax planning and compliance services to individuals, including those participating in the voluntary disclosure program.  She is a member of the American Institute of Certified Public Accountants, Florida Institute of Certified Public Accountants, and Iowa Society of Certified Public Accountants.

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  • Joseph M. Jackson, C.P.A.
    Managing Partner of Tax Services

    Joseph started his accounting career at the firm in 2000 upon graduating from the University of Florida and was promoted to partner in 2006. Joseph currently is the managing partner of tax services at SWKJD and leads a team of highly skilled tax professionals working with clients both domestically and internationally in a variety of industries. Joseph is highly respected for his knowledge in domestic and international tax structures, inbound as well as outbound tax planning and compliance matters, tax planning for real estate developers/investors, and income/estate planning for high-net-worth individuals and family offices. He is as adept in international matters as he is with domestic tax situations, often working with our international tax professionals on voluntary disclosure cases, pre-immigration planning, offshore trust matters, and creating corporate structures to minimize worldwide taxation and ensure international tax compliance. His vast experience has allowed him to service multi-generational family businesses, trusts and estates in order to minimize both income and estate tax.  

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  • Laura S. Feinberg, C.P.A.
    Partner

    Laura S. Feinberg is a Partner in the Audit and Accounting Department.  She has more than 25 years of experience in assurance and accounting and has been practicing with our Firm since 2001.  Laura has expertise in managing audits, reviews, and compilations for private companies and for not-for-profit organizations in several industries including retail, distribution, manufacturing, real estate, healthcare, dealerships, education, and renewable energy.  In addition, she is experienced in Federal and Florida State Single Audits, as well as yellow book engagements.  Laura is an active member of the American Institute of Certified Public Accountants and the Florida Institute of Certified Public Accountants.

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