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William Deckelman, portrait

William Deckelman

Managing Director/Chief Legal Officer at Andersen Tax

Firm officerUpdated

William Deckelman has been Managing Director/Chief Legal Officer of Andersen Tax LLC, a McLean, VA investment adviser managing $6.35B, since January 2025.

1
Years in role
$6.35B
Firm AUM
612
Firm clients
50
Firm advisers

From Form ADV filed 30 March 2026Form ADV

Career

William Deckelman is a control person of Andersen Tax and directly owns under 5% of it. William Deckelman holds a BA in Political Science from Arkansas State University, an MBA from Arkansas State University, a JD with Honors from the University of Arkansas School of Law, an LLM in International Business and Economic Law from Georgetown University Law Center and an LLM in International Law from London School of Economics.

Andersen Tax is an investment adviser based in McLean, VA, registered with the SEC since 2003. It provides financial planning and investment management. Its clients include high-net-worth individuals, corporations and other businesses, and other clients. Its regulatory assets under management total $6.35 billion, as filed on 30 March 2026. Its fees, ownership and offices are on the firm’s profile.

Bill Deckelman is Chief Legal Officer of Andersen, based in Washington D.C. His experience spans corporate governance, legal strategy, and digital transformation. Before joining Andersen, he was Executive Vice President and General Counsel at DXC Technology, and he also served as Executive Vice President of the Howard Baker Forum in Washington, D.C.

Key facts

CRD
4985870
Firm
Andersen Tax · CRD 124205
Role
Managing Director/Chief Legal Officer
In role since
January 2025 · 1 year
Control person
Yes
Direct ownership
Under 5%
Firm headquarters
McLean, VA
Individual registration
No current adviser record · SEC search
Disciplinary history
Not yet shown here · SEC record
Firm bio
andersen.com

Common questions

Where does William Deckelman work?

William Deckelman has been Managing Director/Chief Legal Officer of Andersen Tax LLC since January 2025, and is a control person of the firm.

Source: Form ADV, Schedule A, filed 30 March 2026

How can I verify William Deckelman’s record?

William Deckelman’s role is listed on Andersen Tax LLC’s Form ADV, which the SEC’s adviser search (adviserinfo.sec.gov) publishes under the firm’s CRD 124205.

Source: Form ADV, Schedule A, filed 30 March 2026

Leadership at Andersen Tax

Sources

  1. IAPD individual lookup, CRD 4985870, checked 22 October 2026. This profile uses the Form ADV officer listing; the individual lookup did not provide a current investment-adviser record.
  2. Form ADV Part 1A, Schedules A and B of Andersen Tax LLC, filed 30 March 2026. Title, control and ownership bands.
  3. Andersen Tax team page. Biography, education, credentials, awards and the portrait, reproduced for identification.