Marshall Dean Sage
Tax Law and Business Consulting
As managing partner of Sage Law Firm, Dean delivers comprehensive counsel with a focus on tax controversy, business consulting, and nonprofit matters. With his extensive experience, Dean offers clients tailored tax and business solutions to address their unique needs. Dean is dedicated to guiding clients throughout their business journey, from entity formation to dissolution, ensuring they are positioned for success at every stage.
Dean’s proficiency in resolving tax matters spans a broad spectrum as he has worked with both individuals and corporate clients. He routinely represents clients before the IRS and state taxation agencies and has counseled clients in sales tax matters nationwide.
Dean provides strategic counsel to business of all sizes, collaboating with clients to develop customized strategies for success. His meticulous contract drafting safeguards his clients’ interests and ensures favorable transactions. Whether negotiating profit-sharing arrangements, refining licensing agreements, or revising purchase and sale contracts, Dean leverages his contractual experience to deliver creative solutions to complex business challenges.
Passionate about charitable entities and their missions, Dean has assisted dozens of nonprofit founders through entity formation, structural organization, and the drafting of internal policies. He helps clients navigate the complex exempt application process and provides comprehensive compliance guidance to maintain good standing.
Dean graduated with honors from UCLA, studying Communications and English Literature. Furthering his education, he earned a Master of Entrepreneurship degree, with honorable distinction, from the University of Otago in Dunedin, New Zealand. Dean braved the midwestern winters to complete his J.D. at the University of Michigan Law School, and later returned to his native San Diego to earn an LL.M. in taxation from the University of San Diego.
- Business Law
- Business Contracts, Business Dissolution, Business Finance, Business Formation, Business Litigation, Mergers & Acquisitions, Partnership & Shareholder Disputes
- Tax Law
- Business Taxes, Income Taxes, International Taxes, Payroll Taxes, Property Taxes, Sales Taxes, Tax Appeals, Tax Audits, Tax Planning
- Bankruptcy
- Chapter 11 Bankruptcy, Chapter 7 Bankruptcy
- Nonprofit Law
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- Zoom
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- Microsoft Teams
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Free Consultation
We proudly offer potential clients a free 20-minute consultation to evaluate if the Sage Law Firm team is a good fit to assist you with your tax or business needs. - Credit Cards Accepted
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Rates, Retainers and Additional Information
We accept payment via credit card, debit card, ACH transfers, PayPal, and Venmo.
- California
- State Bar of California
- ID Number: 269325
- English: Spoken, Written
- Managing Partner
- Sage Law Firm
- - Current
- As managing partner of Sage Law Firm, Dean delivers comprehensive counsel with a focus on tax controversy, business consulting, and nonprofit matters. With his extensive experience, Dean offers clients tailored tax and business solutions to address their unique needs. Dean has worked with both individuals and corporate clients. He routinely represents clients before the IRS and state taxation agencies and has counseled clients in sales tax matters nationwide.
- University of Michigan Law School
- Best of the Bar
- San Diego Business Journal
- Best New Attorneys
- The Recorder, Tax Section
- Big Brother of the Year
- Big Brothers Big SIsters of Washtenaw County
- Richard A. Scholarship for Academic Achievement
- University of San Diego
- Honorable Distinction
- University of Otago, Dunedin, New Zealand
- San Diego County Bar Association
- Member
- - Current
- Tom Homann LGBT Law Association
- Member
- - Current
- California State Bar  # 269325
- Member
- - Current
- Myotonic Dystrophy Foundation
- Ambassador
- - Current
- Nostalgic Brickyard Mingles Good Coffee, Tea, and People
- San Diego Community News Group
- Speaker, Myotonic Dystrophy Foundation Conference, San Diego
- Myotonic Dystrophy Foundation
- Presenter, Rare Disease Day, San Diego, CA
- Locana Pharmaceuticals
- Panelist, Myotonic Dystrophy Foundation Conference, Washington, D.C.
- Myotonic Dystrophy Conference
- Presenter, Rare Disease Day, San Diego
- Ionis Pharmaceuticals
- LL.M. in Taxation
- University of San Diego School of Law
- Website
- Sage Law Firm