• McGuire Sponsel specializes in assisting clients in claiming the R&D Tax Credit

  • Our professionals combine an understanding of tax law with engineering disciplines to maximize companies’ research credits and reduce their overall tax burdens.

  • Whether you employ engineers, build prototypes, or incur raw material costs our team can determine eligibility for the credit


Who We Are

McGuire Sponsel offers Fixed Asset Services, R&D Tax Credit Services, Global Business Services, and Credits & Incentives Services. Our firm is committed to providing high-quality service with integrity in a way that helps partner firms bring value to their clients. Our approach has allowed us to become a trusted resource to the industry across the country, with a strong track record with the IRS.

See the Difference

When McGuire Sponsel clients see our alignment with competitors, it is rare for them to find another firm with the level of respect we have for the CPA/client relationship.

Our Industries

With more than 1,500 clients, we leverage our expertise across industries to deliver solutions that suit the specific needs of each client, no matter the goal.

McGuire Sponsel is committed to providing first-class service with integrity in a way that helps partner firms bring value to their clients.

Words From Our Clients


“Our clients are very happy with McGuire Sponsel. They offer a great combination of attributes. They are knowledgeable, thorough, responsive, fairly priced and easy to work with. They can handle large projects and small questions. We’re a “team” both trying to service the clients.”

William Richardson, Partner | Sisterson

“McGuire Sponsel has been extremely responsive to both the needs of our firm and most importantly the needs of our clients. They have not only helped us and partnered with us to deliver tremendous value to our clients but they make my job easier by allowing us to draw on the expertise of a team.”

Jeff Drummonds, Managing Shareholder | LBMC PC

“McGuire Sponsel’s focus on client service is excellent and it seems obvious to me that they understand everything they are working on for us. I have confidence in what they are recommending.”

Brad Hamrlik, Director of Tax | Cortland

“McGuire Sponsel is a true partner to us and we have confidence in their ability to bring value to our clients. In fact, we bring them in without hesitation whenever possible because we know they are a valued resource to our firm”

Robert Berger, Partner | Anders

“I am confident in the work they do and know it’s done right. McGuire Sponsel is a top notch firm.”

Terry Niegel, Partner | Kernutt Stokes


  • case studies
    R&D Tax Credit Services
    June 8, 2022

    R&D – Packaging Manufacturer

    by Kyle Riddle

    McGuire Sponsel worked with a leading packaging manufacturer to do both a current year and retroactive R&D Tax Credit study....

  • blog
    R&D Tax Credit Services
    May 31, 2022

    Blog Series: Navigating the R&D Tax Credit

    by David Seibel & Tanner Niehaus

    The R&D Tax Credit is one of the most subjective areas of the tax code and many businesses believe they...

  • webinars
    R&D Tax Credit Services
    April 29, 2022

    The R&D Tax Credit in 2022 and Beyond

    by David Seibel

    The R&D Tax Credit is one of the most subjective areas of the tax code. With the IRS placing more...

  • podcasts
    R&D Tax Credit Services
    December 2, 2021

    McGuire on the Wire Episode 40

    by Dave McGuire

    In this episode, Dave McGuire sits down with David Seibel to discuss key changes from the recent IRS Guidance on...

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