Mac Thomsen, Business Attorney in Seattle, Washington
focused on Business, Estate Litigation, and Family Law
Seattle, WA
Trusted business attorney serving Seattle.
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Quick answer
Mac Thomsen is an attorney based in Seattle, WASHINGTON. The practice focuses on Business, Estate Litigation, and Family Law.
- Based in
- Seattle, WASHINGTON
- Experience
- attorney
- Known for
- Business · Estate Litigation · Family Law
- Handles Business, Estate Litigation, and Family Law matters from Seattle, WASHINGTON.
- Recognized with Best Lawyers in America — Closely Held Companies and Family Businesses Law (2026).
About Mac Thomsen: Mac Thomsen is an attorney based in Seattle, WASHINGTON. The practice focuses on Business, Estate Litigation, and Family Law.
Areas of practice
Mac's practice areas in Seattle
Mac concentrates on business, estate litigation, family law, litigation, and personal injury. Each area below outlines the kind of case Mac handles, typical outcomes to expect, and how the intake process starts.
Business
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Estate Litigation
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Family Law
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Litigation
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Personal Injury
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Real Estate
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Business cases in Seattle, Washington
Mac takes business matters in Seattle, Washington. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Mac agrees to represent you.
Estate Litigation cases in Seattle, Washington
Mac takes estate litigation matters in Seattle, Washington. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Mac agrees to represent you.
Family Law cases in Seattle, Washington
Mac takes family law matters in Seattle, Washington. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Mac agrees to represent you.
Litigation cases in Seattle, Washington
Mac takes litigation matters in Seattle, Washington. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Mac agrees to represent you.
Personal Injury cases in Seattle, Washington
Mac takes personal injury matters in Seattle, Washington. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Mac agrees to represent you.
Biography
Mac Thomsen, business attorney serving Seattle
Mac Thomsen is an attorney based in Seattle, WASHINGTON. The practice focuses on Business, Estate Litigation, and Family Law. Mac works from Seattle, Washington and takes on business matters across the region.
Mac Thomsen is a top attorney recognized by Best Lawyers in the practice area(s) of Closely Held Companies and Family Businesses Law, Commercial Litigation, Litigation - Real Estate and Personal Injury Litigation - Defendants.
Mac, who practices law in Seattle, Washington, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mac is held by other top lawyers in the same geographic and legal practice area.
Mac's approach to business cases
Mac Thomsen is a top attorney recognized by Best Lawyers in the practice area(s) of Closely Held Companies and Family Businesses Law, Commercial Litigation, Litigation - Real Estate and Personal Injury Litigation - Defendants. Mac, who practices law in Seattle, Washington, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in…
The kind of cases Mac takes
Mac reviews new inquiries case-by-case for business, estate litigation, and family law matters in Seattle and the surrounding Washington area.
Credentials
Credentials — where Mac studied and practices
Seattle University
J.D. · 2015
Mac studied at J.D. in Seattle University.
Law school and academic background
Mac completed J.D. in Seattle University. Formal legal training is one signal of substantive knowledge — the day-to-day practice Mac runs in Washington is where that training gets applied to real client questions.
Recognition
Mac's legal honors and published work
Mac has received 4 formal recognitions from bar associations, industry bodies, and peer-review services.
Best Lawyers in America — Closely Held Companies and Family Businesses Law
2026
Best Lawyers in America — Commercial Litigation
2026
Best Lawyers in America — Litigation - Real Estate
2026
Best Lawyers in America — Personal Injury Litigation - Defendants
2026
Legal awards and honors
Best Lawyers in America — Closely Held Companies and Family Businesses Law (2026). Best Lawyers in America — Commercial Litigation (2026). Best Lawyers in America — Litigation - Real Estate (2026). Best Lawyers in America — Personal Injury Litigation - Defendants (2026).
Locations
Mac Thomsen's office in Seattle
Mac's primary office is at 800 Fifth Avenue, Suite 3200, Seattle, Washington, 98104. In-person meetings are by appointment; a phone intake usually comes first.
Client feedback
Client reviews of Mac Thomsen
Mac has not yet collected verified client reviews on LawyersListed. Reviews here are all from confirmed clients; anonymous ratings are moderated out.
No reviews yet
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Schedule your consultationHiring guide
How to hire Mac Thomsen — what to expect in your first consultation
Working with a new business attorney should feel structured. Here's how the first two conversations with Mac usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
Mac charges for the initial consult. That fee is credited toward representation if you retain Mac'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; Mac will tell you what matters and what doesn't.
Questions to ask a business attorney in Seattle, Washington
A short list to run through before you commit: How many business 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 Mac
Mac discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in business practice — ask which fits.
Hourly rates, contingency fees, and flat-fee options
Every business 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. Mac confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
Mac's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many business practices work with clients on structured schedules.
Frequently asked
Frequently asked questions about Mac Thomsen
How much does it cost to hire Mac for a business case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Mac walks through the likely range during the consult so there are no surprises.
Does Mac offer a free consultation?
Mac charges for the initial consult; that fee is credited toward representation if you retain Mac's office. Some business attorneys offer free consults — check Mac's current terms during booking.
How long do business cases in Washington typically take?
Simple business 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. Mac gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can Mac take my case if I'm outside Seattle?
Mac is licensed in Washington. Matters governed by Washington law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Mac 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 Mac?
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. Mac will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is Mac accepting new business clients right now?
Mac's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.
Areas served
Business attorneys serving Seattle, Spokane and Tacoma in Washington
Mac handles business matters throughout Washington. Each city below is a direct link into the search page for verified business attorneys in that community.
More counsel
Other top-rated business attorneys in Washington
If Mac's intake is full or the fit isn't right, these business attorneys in Seattle handle similar matters. Every profile below is verified and open to consultations.


