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Sean Clancy, Tax Attorney in Washington, District of Columbia

Washington, DC

Trusted tax attorney serving Washington.

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Quick answer

Sean Clancy is an attorney based in Washington, DISTRICT OF COLUMBIA. The practice focuses on Tax.

Based in
Washington, DISTRICT OF COLUMBIA
Experience
attorney
Known for
Tax
  • Handles Tax matters from Washington, DISTRICT OF COLUMBIA.
  • Recognized with Best Lawyers in America — Tax Law (2026).

About Sean Clancy: Sean Clancy is an attorney based in Washington, DISTRICT OF COLUMBIA. The practice focuses on Tax.

Areas of practice

Practice areas handled by Sean Clancy

Sean concentrates on tax. Each area below outlines the kind of case Sean handles, typical outcomes to expect, and how the intake process starts.

Tax cases in Washington, District of Columbia

Sean takes tax matters in Washington, District of Columbia. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Sean agrees to represent you.

Biography

About Sean Clancy — Attorney of District of Columbia tax experience

Sean Clancy is an attorney based in Washington, DISTRICT OF COLUMBIA. The practice focuses on Tax.

Sean Clancy is the team leader of Nixon Peabody’s Tax practice, and a member of the firm’s Public Company Transactions team. He assists clients with a broad range of tax and business planning matters and related tax policy matters.

My focus

Tax Planning

I advise clients on federal tax planning, including assistance in structuring mergers and acquisitions and other transactions. In addition, I counsel private equity funds on domestic and cross-border taxation and corporate finance matters, including mezzanine debt, minority stock and control positions. I also draft and analyze domestic partnership, joint venture, LLC, disregarded entity and other pass-through arrangements.

Executive Compensation/Employment

I assist compensation committees of boards of directors and internal human resources departments with respect to drafting, implementing and administering executive compensation, employment/change of control arrangements and incentive/bonus plans, including state and federal employment tax withholding/reporting obligations and deductibility of compensation, perquisites/fringe benefits and nonqualified deferred compensation.

Corporate Governance/Disclosure

I work with both for-profit and nonprofit clients on corporate formation and governance. In addition, I help analyze and counsel on compliance with the recommended and model pay practices of institutional investors, public interest groups and other stakeholders. I counsel clients regarding compliance with various regulatory (SEC ’33/’34, Sarbanes-Oxley, Dodd-Frank, TARP, Federal Reserve, etc.) and stock exchange (NYSE/NASDAQ) requirements.

Looking ahead

A continued increase in transactions/deal flow, notwithstanding expected legislative change in the federal tax code. Monitoring of federal tax reform proposals is key to advising clients seeking to structure strategic and capital transactions.

Working with Sean on a tax matter

Sean Clancy is the team leader of Nixon Peabody’s Tax practice, and a member of the firm’s Public Company Transactions team. He assists clients with a broad range of tax and business planning matters and related tax policy matters. My focus Tax Planning I advise clients on federal tax planning, including assistance in structuring mergers and acquisitions and other transactions. In addition, I…

Clients Sean works with

Sean reviews new inquiries case-by-case for tax matters in Washington and the surrounding District of Columbia area.

Credentials

Sean Clancy's legal education and bar admissions

  • Georgetown University

    J.D. · 1996

Jurisdictions

Sean's state bar admissions

  • District of Columbia

    ACTIVE

Sean studied at J.D. in Georgetown University.

Law school and academic background

Sean completed J.D. in Georgetown University. Formal legal training is one signal of substantive knowledge — the day-to-day practice Sean runs in District of Columbia is where that training gets applied to real client questions.

Recognition

Awards, publications, and recognition of Sean Clancy

Sean has received 1 formal recognition from bar associations, industry bodies, and peer-review services.

  • Best Lawyers in America — Tax Law

    2026

Legal awards and honors

Best Lawyers in America — Tax Law (2026).

Locations

Sean Clancy's office in Washington

Sean's primary office is at 799 Ninth Street, NW, Suite 500, Washington, District of Columbia, 20001-5327. In-person meetings are by appointment; a phone intake usually comes first.

Main office

799 Ninth Street, NW, Suite 500

Washington, District of Columbia 20001-5327

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Client feedback

Client reviews of Sean Clancy

Sean has not yet collected verified client reviews on LawyersListed. Reviews here are all from confirmed clients; anonymous ratings are moderated out.

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Hiring guide

How to hire Sean Clancy — what to expect in your first consultation

Working with a new tax attorney should feel structured. Here's how the first two conversations with Sean usually go, from the moment you request a consult to the day representation begins.

Consultation formats and pricing

Sean charges for the initial consult. That fee is credited toward representation if you retain Sean's office.

What to bring to your first meeting

Bring any documents you already have — police reports, medical records, filed pleadings, correspondence from an insurer, a copy of the contract at issue. If you're not sure, err on the side of bringing everything; Sean will tell you what matters and what doesn't.

Questions to ask a tax attorney in Washington, District of Columbia

A short list to run through before you commit: How many tax matters have you handled in the last year? What's your fee structure? Who else in the office will work on this? What's your realistic estimate of timeline and range of outcomes? How do I reach you between meetings?

Fees & payment

Fees, payment methods, and consultation options for Sean

Sean discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in tax practice — ask which fits.

Hourly rates, contingency fees, and flat-fee options

Every tax matter is priced differently. Simple document review might be a flat fee. Injury litigation is often contingency. Complex commercial disputes usually run hourly with a retainer. Sean confirms the model in the engagement letter before any work starts.

Payment methods and payment plans

Sean's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many tax practices work with clients on structured schedules.

Frequently asked

Frequently asked questions about Sean Clancy

  • How much does it cost to hire Sean for a tax case?

    Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Sean walks through the likely range during the consult so there are no surprises.

  • Does Sean offer a free consultation?

    Sean charges for the initial consult; that fee is credited toward representation if you retain Sean's office. Some tax attorneys offer free consults — check Sean's current terms during booking.

  • How long do tax cases in District of Columbia typically take?

    Simple tax matters can wrap in a few weeks; disputed cases can run 6–18 months from intake to resolution, longer if the matter goes to trial. Sean gives a realistic estimate for your facts at the consult — vague answers here are a red flag.

  • Can Sean take my case if I'm outside Washington?

    Sean is licensed in District of Columbia. Matters governed by District of Columbia law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Sean will tell you if the case is a fit or refer you to someone closer to your court.

  • What should I bring to my first meeting with Sean?

    Bring every document that touches the dispute: contracts, correspondence, police or medical reports, filed pleadings, invoices, photographs, insurance letters. Also bring a written timeline of what happened, in your own words. Sean will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.

  • Is Sean accepting new tax clients right now?

    Sean's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.

Areas served

Tax attorneys serving Washington and Belize City in District of Columbia

Sean handles tax matters throughout District of Columbia. Each city below is a direct link into the search page for verified tax attorneys in that community.

More counsel

If Sean's intake is full or the fit isn't right, these tax attorneys in Washington handle similar matters. Every profile below is verified and open to consultations.