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
Withum in the DMV Community
Our impact extends beyond the workplace. As active members of where we live and work, we believe in giving back to the DMV community through volunteering and sponsoring local events. Our team members proudly support organizations such as the Maryland SPCA, Maryland Food Bank, A Wider Circle, among many others. Our commitment to these causes reflects our passion for making a positive impact in the lives of our neighbors and fostering a stronger, more vibrant community in Maryland, D.C. and Virginia.
Beyond the Region
- Inside Public Accounting Top 100 Firms – 22nd 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
Partner
Washington, DC
Partner
Washington, DC
Partner, Service Leader
Washington, DC
Partner
Washington, DC
Partner
Washington, DC
Partner
Washington, DC
Withum in the News
LA Times Names Two Withum Leaders on its Banking and Finance Visionaries List
About Aza Ghazaryan Aza Ghazaryan is a Tax Partner with over 20 years of experience serving as a trusted advisor to partnerships and high-net-worth individuals on tax planning and compliance. She advises clients across industries, including professional services, real estate, technology and not-for-profit. Aza has successfully guided clients and teams through complex regulatory changes, including the Tax Cuts and Jobs Act, federal…
Withum Launches Unified Client Collaboration Platform to Simplify Client Engagement Across the Service Lifecycle
ClientConnect consolidates traditionally disconnected client-facing tools into a single platform, reducing complexity across the engagement lifecycle—from request intake and document exchange to deliverables and payment. The solution reflects Withum’s continued investment in digital transformation while addressing the evolving expectations of today’s clients. ClientConnect features a modular architecture supported by native integrations and open APIs. Core components include request management, e-signatures,…
Withum Launches Redesigned Website to Support AI-Driven Search and Intuitive User Experience
The new site emphasizes clarity, speed, and accessibility—making it easier for users to find relevant content, explore the Firm’s services, and connect directly with Withum’s people and expertise. The Firm’s newly redesigned website reflects a shift in delivering insights digitally by aligning user experience, modern search behavior and growth strategy under a single, purpose-built platform. More than a visual refresh, the…
Kelsey Thomas Named Opus Connect’s 2025 Woman of the Year
Kelsey was recognized for her commitment to advancing the industry and its community through an M&A lens. Throughout her over 15-year career in public accounting, Kelsey has distinguished herself through seasoned expertise and impactful leadership within the deal space. She has championed initiatives spanning business development, client service and value-driven insights. “Kelsey represents the standard…
Linda Howard Named to Women in CX’s Awesome Women to Follow in CX List
Linda is an active member of Women in Client Experience, Women of Withum and the Association for Accounting Marketing’s Client Experience Circle. She believes in building networks and sharing best practices to strengthen client and team member service experiences. “Linda has been a driving force in shaping what a client experience program will look like at Withum….
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