Tax Services
Washington, DC
As one of the top accounting firms in greater Washington, D.C., Withum adds value to corporations and nonprofits alike, helping them thrive by offering comprehensive tax, audit and assurance services.
Our team can help you navigate shifting trends, maintain compliance and understand changing rules and regulations. Withum provides all the traditional accounting services the Maryland, D.C. and Virginia business communities require…plus a whole suite of advisory solutions that will level up your success. That’s the Power in the Plus!
(301) 272 6000
Washington, DC Service Specializations
Assurance and Accounting
Outsourced Accounting Systems and Services (OASyS)
Digital Workplace Solutions
Cyber and Information Security Services
Transaction Advisory
State and Local Tax Updates
Do you or your organization operate in multiple states? Do you own property in a variety of states? State and Local Tax (SALT) laws are always changing and understanding the nuances of the states that you own or operate in is challenging. In these DMV resources, you’ll find just a dash of the most up-to-date details on rules and regulations as state and local tax changes happen by state!
Industries We Focus on in Washington, DC
Beyond the Region
- Inside Public Accounting Top 100 Firms – 23rd Largest Nationally
- Accounting Today Top 100 Firms – 22nd Largest Nationally
- Great Place to Work® – Fortune Best Workplaces for Parents and Women
- Vault Top 25 Accounting Firm
Partner In Charge
Scott Reddersen, CPAScott Reddersen is the partner-in-charge of Withum’s Washington, DC and Baltimore, MD offices with over 17 years of experience serving high-net-worth families. His practice focuses on working with private clients in various industries including professional services, real estate, technology, and financial services. Scott works with families to understand their unique financial opportunities, challenges and goals. He helps them navigate current tax issues while developing long- term strategies that allow them to focus on what’s important to them.
Scott serves on internal committees focused on profitability and identifying future leaders in the Firm.
Scott has his CPA license in the state of Maryland. His work in the past has been with individuals regarding income, trust, estate and gift tax planning, as well as charitable planning and navigating equity-based compensation.
Leadership
Withum in the News
Los Angeles Business Journal Names Two Withum Leaders as Women of Influence in Accounting
Kimberly Ravenell, tax partner, was recognized for her commitment to client service and mentorship. With more than 30 years of experience advising high-net-worth individuals and closely held businesses, she provides tax planning and compliance guidance. Kim has played a key role in guiding her team and clients through significant industry and regulatory changes while supporting…
Sameer Uddin Named to Caseware’s 2026 30 Under 30
Advancing Audit Innovation Sameer has played a key role in advancing Withum’s use of audit technology, helping teams adopt new methodologies, improve efficiency and enhance consistency across engagements. A trusted resource for technology implementation, he has been instrumental in the Firm’s adoption of Caseware Cloud and Dynamic Assurance Solutions (DAS) applications. Driving Firmwide DAS Adoption…
Withum Team Members Named as INNOVATE100 Honorees
Leading Industry with a Tech–Forward Vision Matt Walsh, partner and practice leader of Withum’s Industrial and Consumer Products Services Team, was honored in the Finance/Accounting category for helping modernize the Firm’s technology ecosystem. His leadership has supported initiatives that enhance efficiency, streamline workflows and better align technology with evolving client needs, including work with Caseware…
Alan Iosue Named 2026 LA Times Entertainment Business Visionary
As a trusted advisor to entertainment clients, Alan helps organizations navigate the unique opportunities and complexities of an increasingly dynamic, deadline-driven industry. This recognition reflects his commitment to delivering strategic guidance that supports both immediate business needs and long-term success across Southern California’s creative economy. Alan advises production companies, professional athletes, arts organizations and closely…
Withum Ranked a Top 20 Firm Among 2026 IPA 100 Firms
The annual IPA 500 ranks the 500 largest accounting firms in the United States by net revenue using data submitted through the IPA Practice Management Survey. A Growth Strategy Guided by The Withum Way Withum’s rise into the Top 20 reflects purposeful investment. As an independent, owner-operated firm, Withum has the flexibility to make long-term investments that support sustainable growth while maintaining its culture and deepening client relationships. Innovation…
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