About Us

Our Mission

At The Law Office of Pietro Canestrelli, A.P.C., we are more than just a tax law firm, we are a trusted resource for individuals and businesses navigating complex tax challenges. With offices in Temecula and San Diego, California, our firm provides experienced legal representation across the country for clients facing IRS audits, back taxes, tax compliance issues, and other tax controversies. Though we call Temecula and San Diego home, we represent clients nationwide. Wherever the IRS is active, we are too — no taxpayer is out of reach, and no case is too far from home.

Founded by a former IRS Attorney of the Office of Chief Counsel in Washington, D.C., our firm combines insider knowledge with compassionate client advocacy. Whether you’re seeking a tax lawyer in Temecula, San Diego or nationwide, we stand ready to defend your rights and secure your financial future.

Our mission is to provide strategic, honest, and highly effective IRS tax defense and compliance solutions for individuals, families, and small business owners. We aim to minimize your exposure, protect your assets, and give you peace of mind through tailored legal strategies and direct communication. At the heart of our firm is a commitment to education, transparency, and results.

Our Four Pillars

Education
We believe that every taxpayer deserves to understand their rights and responsibilities. Our tax law experts take the time to educate you on your options, ensuring that you make informed decisions when dealing with the IRS or state tax authorities. Whether you’re facing an audit or managing business tax planning, we explain every step clearly.

Advocation
As a dedicated IRS tax attorney, we serve as your voice and advocate in front of the government. We aggressively represent clients during IRS audits, tax litigation, and negotiations with the IRS, working to reduce liabilities and prevent unfair outcomes. From back taxes to penalty relief, we fight to protect your interests.

Passion
We bring genuine energy and focus to every case. Our clients rely on our tax controversy attorneys because we treat every issue as if it were our own. We care deeply about defending your rights and achieving the best possible result, whether you’re a business owner under audit or an individual who needs IRS tax relief.

Compassion
Facing tax problems can be stressful, confusing, and isolating. That’s why we offer more than just legal expertise—we offer empathy. We’re a compassionate tax attorney team that understands the human side of tax issues and provides calm, constructive guidance from start to finish.

Meet Pietro E. Canestrelli, J.D. L.L.M.

Pietro Canestrelli, founder and lead attorney of the firm, is a former IRS Attorney of the Office of Chief Counsel in Washington, D.C. who brings unique, insider insight into the workings of the tax system. With years of experience inside the IRS and in private practice, he offers an unmatched perspective as a tax lawyer for businesses and individuals alike. His experience allows him to anticipate IRS strategies, negotiate effectively, and deliver results that protect his clients’ finances and futures.

Pietro founded this California tax law firm with a mission to give clients the upper hand in their dealings with the IRS. He has helped countless individuals, entrepreneurs, and corporations resolve their tax disputes, avoid penalties, and regain financial control. His deep understanding of federal and state tax law, paired with his unwavering dedication to client service, makes him a trusted ally for those seeking real solutions to their tax problems.

Meet The Team