Paul W. Oosterhuis, Tax Attorney in Washington, District of Columbia
focused on Tax and Tax Litigation
Washington, DC
Trusted tax attorney serving Washington.
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Quick answer
Paul W. Oosterhuis is an attorney based in Washington, DISTRICT OF COLUMBIA. The practice focuses on Tax and Tax Litigation.
- Based in
- Washington, DISTRICT OF COLUMBIA
- Experience
- attorney
- Known for
- Tax · Tax Litigation
- Handles Tax and Tax Litigation matters from Washington, DISTRICT OF COLUMBIA.
- Recognized with Lawyer of the Year — Litigation and Controversy - Tax, Washington (DC) (2013).
About Paul W. Oosterhuis: Paul W. Oosterhuis is an attorney based in Washington, DISTRICT OF COLUMBIA. The practice focuses on Tax and Tax Litigation.
Areas of practice
Paul's practice areas in Washington
Paul concentrates on tax and tax litigation. Each area below outlines the kind of case Paul handles, typical outcomes to expect, and how the intake process starts.
Tax cases in Washington, District of Columbia
Paul 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 Paul agrees to represent you.
Tax Litigation cases in Washington, District of Columbia
Paul takes tax litigation 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 Paul agrees to represent you.
Biography
Paul W. Oosterhuis, tax attorney serving Washington
Paul W. Oosterhuis is an attorney based in Washington, DISTRICT OF COLUMBIA. The practice focuses on Tax and Tax Litigation. Paul works from Washington, District of Columbia and takes on tax matters across the region.
Paul Oosterhuis is a senior international tax partner representing clients on a wide range of international and U.S. tax matters. Mr. Oosterhuis has extensive experience in international mergers and acquisitions, post-acquisition integration transactions, spin-offs, internal restructurings and joint venture transactions. He also represents multinational companies in nontransactional international tax planning and IRS controversy matters.
In recent transactions, Mr. Oosterhuis has represented:
- Endo Health Solutions in its acquisition of Paladin Labs Inc.;
- Nokia Corporation in the sale of its devices and services division to Microsoft;
- Theravance Inc. in the spin-off of its drug development business;
- Pfizer, Inc. in the spin-off of Zoetis, its animal health business, into a separate publicly traded company via an initial public offering; and
- Gilead Sciences, Inc. in its acquisition of Pharmasset, Inc., a transaction that was recognized in the 2012 Financial Times “US Innovative Lawyers” report.
Mr. Oosterhuis also has represented numerous clients in internal restructuring and post-acquisition integration efforts, including Hewlett-Packard Company, Pfizer Inc., Eli Lilly and IBM.
In addition to specific transactions, Mr. Oosterhuis regularly advises clients on international tax planning matters generally, including transfer pricing matters. He also represents clients in audits and appeals before the IRS and has negotiated, on behalf of clients, various advance pricing agreements, prefiling agreements and competent authority agreements. He also serves as outside tax counsel for the Pharmaceutical Research Manufacturers Association.
Mr. Oosterhuis has testified on international tax policy matters before congressional committees, including most recently the House Ways and Means Committee at its June 2013 hearing on “Tax Reform: Tax Havens, Base Erosions and Profit Sharing.” He was the only private practitioner testifying at the hearing.
Mr. Oosterhuis regularly has been selected for inclusion in Chambers Global: The World’s Leading Lawyers for Business, Chambers USA: America’s Leading Lawyers for Business, Tax Directors Handbook, The Legal 500 U.S., Who’s Who Legal: Corporate Tax,IFLR1000 and The Best Lawyers in America. He also was named Best Lawyers’ “2013 Washington, D.C. Litigation & Controversy — Tax Lawyer of the Year” and was included in Washingtonian Magazine’s 2013 “Best Lawyers” list.
Paul's approach to tax cases
Paul Oosterhuis is a senior international tax partner representing clients on a wide range of international and U.S. tax matters. Mr. Oosterhuis has extensive experience in international mergers and acquisitions, post-acquisition integration transactions, spin-offs, internal restructurings and joint venture transactions. He also represents multinational companies in nontransactional international…
The kind of cases Paul takes
Paul reviews new inquiries case-by-case for tax and tax litigation matters in Washington and the surrounding District of Columbia area.
Credentials
Credentials — where Paul studied and practices
Harvard University
J.D. · 1973
Brown University
BA
Jurisdictions
Paul's state bar admissions
District of Columbia
ACTIVE
Paul studied at J.D. in Harvard University and BA in Brown University.
Law school and academic background
Paul completed J.D. in Harvard University and BA in Brown University. Formal legal training is one signal of substantive knowledge — the day-to-day practice Paul runs in District of Columbia is where that training gets applied to real client questions.
Recognition
Paul's legal honors and published work
Paul has received 3 formal recognitions from bar associations, industry bodies, and peer-review services.
Lawyer of the Year — Litigation and Controversy - Tax, Washington (DC)
2013
Best Lawyers in America — Litigation and Controversy - Tax
2026
Best Lawyers in America — Tax Law
2026
Legal awards and honors
Lawyer of the Year — Litigation and Controversy - Tax, Washington (DC) (2013). Best Lawyers in America — Litigation and Controversy - Tax (2026). Best Lawyers in America — Tax Law (2026).
Locations
Paul W. Oosterhuis's office in Washington
Paul's primary office is at 1440 New York Avenue, NW, Washington, District of Columbia, 20005. In-person meetings are by appointment; a phone intake usually comes first.
Client feedback
Client reviews of Paul W. Oosterhuis
Paul 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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Schedule your consultationHiring guide
How to hire Paul W. Oosterhuis — what to expect in your first consultation
Working with a new tax attorney should feel structured. Here's how the first two conversations with Paul usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
Paul charges for the initial consult. That fee is credited toward representation if you retain Paul'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; Paul 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 Paul
Paul 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. Paul confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
Paul'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 Paul W. Oosterhuis
How much does it cost to hire Paul for a tax case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Paul walks through the likely range during the consult so there are no surprises.
Does Paul offer a free consultation?
Paul charges for the initial consult; that fee is credited toward representation if you retain Paul's office. Some tax attorneys offer free consults — check Paul'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. Paul gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can Paul take my case if I'm outside Washington?
Paul 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 — Paul 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 Paul?
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. Paul will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is Paul accepting new tax clients right now?
Paul'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
Paul 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.
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