Tax Filing Professionals to Know 2025

Reuben James Mattinson, commonly known as RJM, is a respected entrepreneur and business leader who has made significant contributions to the world of taxation. He is the founder and CEO of RJM Tax Exemption, a company that helps businesses expand their brands by identifying and leveraging tax exemption opportunities. Mattinson has a background in accounting and finance, and he has always been passionate about helping businesses reduce their tax liabilities. In 2010, he founded RJM Tax Exemption with the aim of providing businesses with a comprehensive range of tax exemption services. Today, the company is a leading player in the tax exemption industry, with a reputation for excellence and integrity. Under Mattinson's leadership, RJM Tax Exemption has helped thousands of businesses expand their brands by maximizing their tax exemptions. The company has a team of experienced professionals who are dedicated to providing personalized services tailored to each client's unique needs. Mattinson is also a respected thought leader in the industry, and he frequently writes and speaks on topics related to tax exemption and business growth. He is passionate about empowering businesses to achieve their goals by providing them with the knowledge and tools they need to succeed.

Harisimran Khalsa brings over 20 years of accounting experience to her role as Director of Professional Services at SponsorCloud. With a background that includes serving as CFO in private equity, she has spent more than a decade with a particular focus on real estate. Her expertise in financial strategy and tax compliance ensures that SponsorCloud's clients receive top-tier guidance in navigating the complexities of the real estate market.

Sharon has over 20 years of experience in tax and accounting. She received her Master of Science in Accounting – Tax Consulting degree from the University of Virginia. She spent the first 13 years of her career in public accounting, including over 5 years at Deloitte where she worked as a senior tax manager. She then moved to industry and she was a corporate tax director at a public company before she started her own tax practice in early 2018. Sharon has in-depth knowledge and broad experience in a variety of tax areas, and she has served various types of clients such as individuals, estate and trust, corporations, and partnerships. She specializes in U.S. federal taxation, and she also has hands-on experience in multi-state and international taxation. Sharon became a crypto investor and blockchain enthusiast in 2017. Since then, she quickly became one of the top crypto tax experts in the U.S. She published articles on Bloomberg Tax and was interviewed by news media such as CoinDesk. She created an online course called Mastering Cryptocurrency Taxation and published an eBook called A Quick Start Guide to Cryptocurrency Taxation. In early March 2020, Sharon was invited by the IRS to attend the first-ever Virtual Currency Summit in Washington, DC.