Experienced Tax Attorneys Committed to Protecting What You've Built

Whether you're facing an IRS notice, planning for the future, or leading a business or nonprofit, we deliver clear, strategic legal support to help you move forward with confidence.

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Federal Tax Representation

We represent clients in IRS audits, notices, penalties, and complex tax matters. From offshore compliance to whistleblower claims, we offer strategic solutions and resolve issues quickly.

State Tax Representation
(Virginia and California)

We guide clients through state audits, tax disputes, and multi-jurisdictional filings. From back taxes to real estate-related issues, a California tax attorney and Virginia tax attorney offers practical solutions backed by local insight.

Estate Planning
(Virginia and California)

Our VA estate planning and CA estate planning attorneys help individuals and families preserve wealth, avoid probate, and plan for the future with trusts, conservatorships, advance directives, and trustee support during sensitive transitions.

Church Tax Representation

We advise pastors and churches on payroll, housing allowances, 501(c)(3) compliance, and IRS audits—protecting tax-exempt status while supporting your ministry’s mission.

Nonprofit Tax Representation

We help nonprofits with 501(c)(3) formation, compliance, governance, IRS issues, and fundraising regulations—keeping your organization legally sound and mission-focused.

Business Tax Representation

We guide business owners on tax-efficient formation, restructuring, and planning—helping reduce risk and improve financial clarity at every stage.

Work With A Tax Attorney Who Understands The Stakes

We’ll guide you through every tax challenge with clear advice, expert strategies, and steady support.

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GG Law Reviews

4.9

Based on 73 reviews

GG Law Reviews

4.9

review us on See all reviews

1733327349

We hired Gammon & Grange to help us through a tragic situation where we experienced huge financial consequences due to the malpractice of our CPA. There were referred to us by trustworthy colleagues in the industry and G&G did not disappoint. Despite how painful and discouraging the entire situation was, our G&G attorneys were incredibly knowledgeable, controlled, professional, and supportive. And ultimately, we won the settlement for which we were seeking. I'd hire them again in a heartbeat and truthfully, we've continued to use them for the sake of ongoing consulting.

Vienna Youth Soccer

1732209064

We highly recommend Gammon & Grange for any nonprofit in need of expert legal guidance. We have worked with Derek Gaubatz and his team on a variety of matters for our nonprofit, including governance, contracts, and compliance. They have always been timely and thorough in all matters.

1729173023

We had the pleasure of working with Gammon & Grange to establish a non-profit legal entity, and we couldn't be more satisfied with their services. Our team had a clear vision and mission, but we lacked experience in setting up the necessary legal structures. Thanks to their expert guidance, we moved from vision to reality.Derek Gaubatz and the team at Gammon & Grange took the time to understand our organization’s unique needs and provided clear guidance at every step. Their responsiveness and attention to detail gave us confidence that our organization was in capable hands. They were professional, efficient, and attentive throughout the entire process.We highly recommend their services to any organization seeking legal counsel for non-profit formation or related legal matters.

1727125168

Derek Gaubatz at G&G impressed me with his thoughtful and timely advice.

1726716261

If you're in need of an experienced non-profit attorney, I highly recommend Derek Gaubatz. He helped review a 501(c) officer employment contract and very quickly demonstrated his knowledge, background, and insight. I'll definitely be using Derek in the future.

Scott Finnamore

1726690815

Gammon & Grange has been a tremendous asset for our education nonprofit. Their guidance in legal compliance and risk mitigation related to employment law and work in international settings has been invaluable.

1726684504

The faith-based nonprofit organization, SAT-7 USA, with which I serve as president, representing international ministry SAT-7, has worked with Gammon & Grange for several years. In particular, my experience is with Derek Gaubatz, who led a thorough legal and professional review of our Employee Handbook, hiring documents and employment contracts, faith statements, and job descriptions, revising, updating, and as needed rewriting much of the text to produce a clear, accurate, current set of human resources documents for SAT-7 USA. We commissioned this review to assure, as best we could, our personnel and the organization were protected re our religious identity and religious liberty, compliance, and avoidance of litigation. Mr. Gaubatz's grasp of our identity and purpose, legal insight, and writing were excellent in every way. Our governance Board reviewed all these resources and, upon administrative recommendation, endorsed and adopted them for SAT-7 USA. The Board, along with members of my team, were pleased with the final results of the exercise. I highly commend and recommend without reservation Mr. Derek Gaubatz.

Pastor Amy Carlson

1726681104

1726672266

G&G are wonderful. A professional firm, of the highest order. The partners are attentive to all our concerns and engage in depth with us on the issues possible results and best strategies.

Cecilia Blankenship

1726668173

As a non-profit working internationally for religious freedom, it has been such a blessing to have this resource for questions about navigating the management issues in foreign countries as well as the United States.

1726621501

I highly recommend Gammon & Grange for any nonprofit or faith-based organization in need of expert legal guidance. I have worked with Derek Gaubatz and his team on a variety of matters, for my church and religious ministry clients, including medical accommodations, contract review and FLSA status. Gammon and Grange has a deep understanding of the unique legal challenges faced by ministries.They also provide counsel on intellectual property, board governance, and risk management, ensuring ministries remains in full compliance. Derek’s advice was both strategic and compassionate. Gammon and Grange’s expertise in nonprofit law, especially with faith-based organizations, is unmatched. If your organization requires legal support, particularly around issues of constitutionality and religious liberty, you won't find a better partner.

Nancy Ingram McKinnon

1721831557

Siquarie Shudda (Shudda)

1716620487

1715310422

I got in contact with Robert Adams as I was referred to him with very high reviews. I spoke to him on the phone about a workman’s compensation issue I had going on. Unfortunately, I was very displeased with my conversation with him. I would think that a lawyer who has been working for 50 years, as he had to mention to me, would know how to talk to people. However, the way he spoke was very demeaning towards me and borderline sexist. I appreciate honesty and an upfront answer but there is a way to do it respectfully. I am a young person but that does not mean I can be disrespected.

1693344609

1683846134

Gammon & Grange has been a significant help to us as we grow our international ministry, especially in areas of intellectual property, contract law, and international law. We are grateful for their time, counsel, and support in so many diverse areas.

1683663171

Have engaged G&G several times over 20 years and they have always been effective and efficient with top team members led by founder Chip Grange.

1683585367

For more than 40 years of recommending nonprofits to Gammon & Grange, especially churches and faith-based organizations, not one has reported any concerns. They have a mid-size firm with some specialization that is very client-oriented. Couldn't speak more highly of their attorneys.

Carolyn Cuppernull

1683559066

Shade, a non-profit with a mission to transform lives by sharing the tangible love and living hope of Christ with people who have albinism in Tanzania has been supported by exceptional legal counsel from Derek Gaubatz since 2022 upon the retirement of our counsel who enthusiastically recommended Gammon & Grange. In addition to the valuable legal advice, we are blessed by Derek's responsive, compassionate, faith-based expertise. After a comprehensive analysis, he advised our Board on Amending and Restating our Bylaws, and instituting Charitable Registrations in several states. As Shade School grows and our community outreach programs expand, we will continue to rely on Gammon & Grange for all of our governance and compliance needs. Five stars from Shade- especially for Derek Gaubatz and Elizabeth Flanagan!

1683477774

As a leader of a nonprofit faith-based school, I rely heavily upon the team at G&G to advise and guide me in navigating religious liberty, board governance, and Christian school-related issues so that I can best serve and protect my school. Over the past two years, the G&G team has exceeded my expectations in terms of their knowledge, experience, timeliness, thoughtfulness, and comprehensive manner in addressing my myriad issues, concerns, and tasks at hand. I highly recommend the G&G team (Derek, Matthew, and Scott) and would give them a 10-star rating, if possible!

1683391417

I’m so grateful for the expertise and counsel of G&G's Derek Gaubitz. He has provided timely, professional, and constructive solutions for incorporating our religious school as a tax-exempt non-profit, reviewing and drafting employment contracts, and helping us form as a faith-based ministry. His trustworthy guidance has been critical to our launch.

1683302086

We couldn't be more grateful for the expertise we have received through Gammon & Grange, specifically through Derek Gaubatz. The firm's deep knowledge of how to assist faith-based nonprofits is incomparable. Highly recommend!!

Kerry Halliwell

1683298317

This team is professional and serves our charity that specializes in international ministry with excellence. Their expertise in compliance for nonprofit organizations is so appreciated. Their response time when we reach out is unprecedented in our experience. I have no hesitancy in recommending Gammon and Grange for all of your legal needs related to faith-based ministries and charities.

Impact France Administration

1680541346

Very knowledgeable and responsive with the expertise we need in international nonprofit work.

1680297775

Following my bike accident, Chip let me know that G&G had a personal injury atty, RA. I found RA to be thorough, aggressive enough but fair-minded. I appreciated his counsel all along, but found communicating with him somewhat difficult, with him sometimes using personal / sometimes G&G email. And I thought he could've been a bit clearer on the Medicare matters, which are confusing to the novice.All in all, a great experience and thanks so much!

1680283618

What they did for me in a time when things were real dismal and the fact they negotiated a larger settlement then I expected by at least triple the amount it may have taken a while as I was chattering my teeth he stayed in the game and got it done ✅ no fear at least on his part so thanks again to Bob for all the good advice during that time and yes I did recommend you guys already because I think you’re from the old school where you care about how your getting it done and the people you’re serving and as I told you up front you weren’t picked you were selected there is a difference

1672934769

The attorneys were knowledgeable and responsive. Especially helpful with making required changes to our non profit bylaws. Highly recommend them.

Elizabeth Pinkerton

1672587126

1671676186

Gammon & Grange helped us to establish the bylaws, file articles of incorporation, and achieve 501(c)(3) status for our newly formed Classical Christian school in Virginia. Mr. Gaubatz did an outstanding job of listening to our needs and providing sound advice throughout the process. The billing statements are thorough and easily understood. I highly recommend G&G and will continue to seek their counsel as our school grows.

Sallyann Rodriguez-Sawao

1670599848

As a Fairfax County nonprofit, we have been using Gammon & Grange to support our annual registration process. They make the process easy and understandable. Would highly recommend other nonprofits to reach out to the team!

1670207858

As a faith based non-profit, we have enjoyed working with Gammon & Grange, P.C. They have assisted us in risk management and advised us in compliance over the years. We are appreciative for the partnership!

Operations Arrabon

1669915583

Used for our incorporation, bylaws, and our tax exemption filing. They also serve as our registered agent. Excellent customer service. They helped us legally codify our ministry status so we can continue to provide our faith-based spiritual formation work.

1669834898

We are a religious organization and have relied on Gammon & Grange for religious liberty, board governance, risk management, and other legal counsel for the past 12 years. Exemplary service and support!

1669831762

TOL Ministries, Inc., enjoys a wonderful relationship with Gammon and Grange PC. Steve King has been exceptionally helpful to me and the ministry in ensuring we continue to be able to operate with our Christian values in all aspects of the ministry in alignment with the religious freedom's we enjoy in the USA. First class service!

Kathy Bekhit Azer

1669831011

Words can’t express how grateful I am for Gammon & Grange! They are always there when you need them with a quick reply that is ALWAYS helpful! Derek is fantastic and always available and knowledgeable. I can see that he really cares, not only about my interests, but all parties involved interests and that is important to us! Thank you Gammon & Grange for all you do!

1669765326

Our 501(c)(3) ministry was established 24 years ago with the vital, professional help of Gammon & Grange and continues to thrive thanks to their advice and service. We highly recommend them for their integrity and expertise.

1669665571

Gammon & Grange, PC has represented our non-profit firm for over four decades! They are true professionals and experts in many fields that have been critical to managing our faith based non-profit. We can unreservedly recommend them.

1669229766

Gammon & Grange has been a great support to our parachurch ministry work for many years. They bring tremendous wisdom, experience, and heart to the legal counsel provided.

1668876754

Vapor Ministries recently partnered with Derek Gaubatz of Gammon & Grange to guide us through strengthening our child protection policies following a referral from a trusted ministry partner. Derek and the G&G team shepherded us through this process, providing sound wisdom and guidance, timely feedback, and encouraging words. He added value at each step of the process, exceeding expectations across the board. I look forward to partnering with Derek and the G&G team to strengthen our religious liberties, further protecting our non-profit ministry from threats and preserving the essence of our Christian mission.

1668803997

The attorneys and staff at Gammon and Grange have handled our legal needs with professionalism, timeliness, integrity, and accuracy. They are a great legal team to support any business.

The Rev. Chris Royer, PhD

1668712984

Derek Gaubatz, Esq., of Gammon and Grange has provided AFM with exceptional service. He's helped us think through legal issues pertaining to faith-based missions, nonprofit law and religious liberty. I highly recommend his services!

1667590111

1667418785

Derek helped take my Corporation to 501(c) 7 non profit status and was nothing but a pleasure to work with. If anything arises in the future, I will certainly be reaching back out to Derek.

Steve Nelson Martin

1665651190

Derek Gaubatz and the team at Gammon & Grange went well above our expectations when they helped our nonprofit obtain some required and complex tax-exempt paperwork. I would very highly recommend them.

1663961034

Gammon & Grange has been incredibly helpful for me in many ways, including establishing a nonprofit, tax-exempt status filing, as well as issues related to board governance, risk management, and compliance. Thank you!

1663876452

Derek Gaubatz has been incredibly helpful to us as we manage our international non-profit educational activities. He understands the mission and vision of our organization, and that understanding translates well in the competent professional legal advice he provides.

1663717614

We are a medium sized church which has run into a variety of legal related issues in recent years and have turned to G&G and Derek Gaubatz for help; the assistance has been professional, on-point, friendly and very timely as we've worked together on board govenance, risk management and complex commercial loan issues.

1661780348

Leslie is great to work with and keeps me updated on actions I need to take.

1661431033

Gammon & Grange has been responsive and cordial, thorough during fact-finding, and always provides easy-to-understand counsel. They allow me to get back to running my business!!

1661204249