The Law office of pietro canestrelli

A tax controversy boutique, APC

We Can Help You Today

WE PROVIDE SOLUTIONS FOR OUR TAX AND BUSINESS CLIENTS SO THEY CAN REST WELL AT NIGHT.

At the Law Office of Pietro Canestrelli, we practice law passionately and compassionately educating and advocating for our clients in the areas of tax controversy and business law.

Attorney, Pietro Canestrelli, is a certified tax specialist in California with over 23 years of experience. He is mindful that dealing with the IRS, FTB, EDD, or CDTFA can be stressful and cause disruptions in our daily lives. It is the mission of The Law Office of Pietro Canestrelli to take the fear and stress out of dealing with these taxing authorities so that our clients can move on with their lives.

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California Franchise Tax Board

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Employment Development Department State of California

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California Department of Tax and Fee Administration

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The Office of Tax Appeals

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Tax Court and U.S. District Court litigation and administrative hearings

Pietro E. Canestrelli

Pietro Canestrelli has both a law degree (JD) and an advance law degree (LL.M.) in Taxation; he is a Certified Specialist in Taxation Law with the State Bar of California Board of Legal Specialization. He has over twenty-three (23) years of experience practicing tax law. His specialty and majority of his practice involves representing clients in the area of tax controversy, domestically and internationally.

He represents clients in front of

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The Internal Revenue Service

CDTFA

FTB

California EDD

Office of Tax Appeals

Contact us for a free consultation

Testimonials

Reviews

Law Office of Pietro Canestrelli, a Tax Controversy Boutique, APC

4.9

Based on 62 reviews

review us on

Steven Kalmikov

7 months ago

The Law Offices of Pietro Canestrelli was recommended to us and we used them. They handled everything quickly, professionally, always keeping me updated. They are one of the best companies I have ever used and I highly recommend them.

Jorge Quiroz

7 months ago

After receiving a Notice of Deficiency from the IRS, telling us that we were exposed by an extraordinary amount of money. We reached out to the LOPC, they were very clear regarding what we could expect on period of time to solve this issue, as well as providing us an estimated ballpark cost for this specific process.Today we received notification from the IRS informing us that this issue has been closed and we do not owe any back taxes or penalties.The LOPC kept updating us on progress and wrapped up the issue in a reasonable time and under budget.I hope I never again have to go through a similar process with the IRS, however I have the peace of mind knowing that the team at the LOPC is available and will have my back.Thank you to the LOPCJQ

Jane Clark

8 months ago

Had a consultation yesterday. Beth and Pietro were very kind in answering my concerns. Very professional and walked away with info needed. Thank you,K.S.

RAPP RAPP

8 months ago

Pietro was very helpful and answered all my questions.

Bob Ybarra

9 months ago

Very pleased with their staff and ability to service our needs. Highly recommend them.

Adriane

9 months ago

Recently, I began receiving services from Mr. Pietro Canestrelli and his legal team. He clearly explained my rights within tax law parameters, and his team answered my follow-up questions in a timely manner. Mr. Pietro and his team are affable and kind. All of their attributes speak highly of how qualified they are with their craft. Thank you Law Office of Pietro Canestrelli! I look forward to doing more business with all of you. Adriane D.

Ryan P

9 months ago

I have had the pleasure of working with Mark Hampton. He did an exceptional job on a difficult and complicated tax return. Thumbs up doesn’t cover it, I salute the man for his knowledge, ability to explain the situation, and solve it!! He is my go to, moving forward!

Michael Duffy

9 months ago

I highly recommend Pietro and his team. They are extremely knowledgeable and yet, communicate in a clear, understandable way; making complicated tax and legal issues easy to comprehend. And, they always return phone calls promptly!

Wendy Lesovsky

9 months ago

Pietro met with my sister and I regarding my mothers estate and spent quite a bit of time with us. My sister (as the trustee for her account) ended up with another lawyer closer to where she lived. She ended up firing that lawyer that spent much of my mothers estate on frivolous things with no resolve and she had to move to another lawyer. I wish she had gone with Pietro from the get-go, as I feel the outcome would have been much better and more in our favor than the tens of thousands of dollars spent fighting another sisters worthless claims. I highly recommend Pietro and his team!

Sean Price

9 months ago

I found the law office of Pietro Canestrelli because I was in desperate need of tax advice. Before my free consultation I was impressed with them and knew I made the right choice contacting them. They were professional and empathetic on the phone when making a zoom meeting appointment. They emailed me right away to confirm my appointment, they sent me an email with information about their law office and background. The day of the zoom meeting I received an email to remind me as well as a phone call.I had a free 30 min consultation by zoom. They were very professional and knowledgeable. Some of my questions were outside of his services and Mr. Canestrelli still was willing to help me. I felt more comfortable and knowledgeable about my situation after the meeting.I advise anyone to call them. It's a great piece of mind knowing you find an attorney willing to help you and unlike others out there just looking for a pay day. All their positive reviews on yelp and Google weren't wrong.I will be using Mr. Canestrelli and his law office in the future.

Keith Gentry

10 months ago

Mark has been one of my best attorneys I have ever had. Treat me like I'm his only client always there looking out on my best behalf and now allowing me to put myself in harm's Way. He has been more than just an attorney has been a friend and I accept him and his family thank you for what you have done for us.

Steve Conner

10 months ago

I’ve worked with Mark Hampton for 8 or 9 years. High quality service and deliverability are two of the most recognizable traits of his work. I recommend you work with him for any tax settlement case!

Paul Choi

10 months ago

Incredibly helpful and professional law firm. They were responsive to my various inquiries and concerns. We were able to quickly and competently formulate a strategy to resolve my situation.

Tiffany Marie

10 months ago

Mark Hampton went above and beyond, and is super friendly! Thanks for your help!

Erick Montejo

10 months ago

Law Office of Pietro Canestrelli have been nothing but generous! Not just for me but for the organization I work for by hosting a Christmas Drive for foster kids in need! Each individual plays a huge role inside an incredible team with big hearts.

Black Rose

10 months ago

I spoke with a staff member from Law office of Pietro Canestrelli and he was very professional and knowledgeable. I will definitely use their services when we decide to incorporate our business!

GARAGE GYM FITNESS INC

10 months ago

I have heard about the good work the Law Office of Pietro Canestrelli does by my fellow business owners. I will be definitely reaching out to them for all my business needs!

Ricardo Cortez Ortiz

10 months ago

If you're dealing with complex tax issues, I highly recommend the Law Office of Pietro Canestrelli. Their team stands out for their strong ethics, professionalism, and genuine compassion. They offer precise and ethical legal advice, ensuring clients feel supported and understood throughout the process. I have worked with Associate Attorney Marlon Gonzales Villacuzes, and I could not have asked for a more knowledgeable advocate. For anyone in need of top-quality representation with a personal touch, the Law Office of Pietro Canestrelli is the perfect choice.

Samuel Laguna Ruiz

10 months ago

Known for exceptional service in tax law, The Law Office of Pietro Canestrelli's staff is incredibly professional and attentive, ensuring clients feel valued and well-cared for. Their expertise and dedication to client satisfaction truly set them apart in the field.

Dilan Tucker

10 months ago

I recently referred several friends to the the Law Office of Pietro Canestrelli(LOPC), and I am excited to share my exceptional experience. My friends rave about the job Justin and the team at LOPC did and the advice that he gave in setting up their business Located in Riverside County, this firm offers a comprehensive range of business law and tax law services, including dispute resolution and corporate tax advisory. They told my friends what structure to form as well as advised them on difficulties they see in simular businesses. They created a custom corporate documents to best suet their goals.Moreover, the Law Office of Pietro Canestrelli operates on a foundation of strong Christian ethics. This moral compass is reflected in every aspect of their practice, from their honest and transparent communication to their dedication to serving clients with integrity and fairness. It is refreshing to work with a firm that not only excels in its field but also upholds values that promote trust and ethical conduct.If you are in need of business or tax law services, I highly recommend the Law Office of Pietro Canestrelli. Their combination of professional excellence, compassionate client care, and ethical principles makes them an outstanding choice. I am grateful for their support and expertise, which have made a significant difference in my legal matters.

Sharon Tucker

10 months ago

The people at Law Office of Pietro Canestrelli(LOPC), are excellent. I consistently refer colleagues and friends because of my personal experiences. I have found them to be straight forward, professional and knowledgable as well as extremely personable. My friends had tax issues and I referred them to LOPC. Anyone who has experienced tax issues know that they can be scary. The amount of peace they had after talking to an associate at LOPC was visible. They truly act in the interest of the client and it is refreshing knowing that the advice given reflected the in best interest of their clients.If you are in need of business or tax law services, I highly recommend the Law Office of Pietro Canestrelli. Their combination of professional excellence, compassionate client care, and ethical principles makes them an outstanding choice. I am grateful for their support and expertise, which have made a significant difference in my legal matters.

Lorenzo Williams

10 months ago

"I was very anxious about my tax situation, but Mark made it so much easier. He explained each step and made sure I understood where my case was at all times. His understanding of the code and aggressive approach with the IRS were just what I needed. Highly recommend!"

Andrea Manahan

10 months ago

Met the Law Office of Pietro Canestrelli team, they are a very friendly, caring, and knowledgeable team. I definitely recommend them for your tax and business needs!

Ryan Trantum

10 months ago

It is said that there are only two certainties in this life, Death and Taxes. I don't have any recommendations on how to deal with death, but if you are having trouble with taxes, Pietro is the guy to talk to.

peter bellanova

10 months ago

Whether helping with personal legal matters or helping referred friends and clients, Pietro and his Team are just outstanding. They are competent, ethical, and they delivered solutions in every instance. I enthusiastically recommend the Law Office of Pietro Canestrelli

E DaSilva

10 months ago

In my career as a residential mortgage Loan Officer I have had to periodically refer my clients to the Law Office of Pietro Canestrelli for assistance with their tax situation. They have all been treated respectfully and received great guidance and care. I would not hesitate to refer Pietro and his office to care for any of my clients, friends, and family.

Amy Smith Smith

10 months ago

I've been receiving exceptional service from Pietro and his team for many years, addressing both my personal and business needs. From trust and estate planning to LLC creation and business services, their expertise is invaluable. They are always quick to respond to my questions as well as my clients' inquiries, ensuring everyone is well-informed. Pietro and his team also play a vital role in educating our real estate community, enhancing our ability to serve our clients effectively. Their dedication to helping families in need is commendable. Thank you for your continued support and expertise.

lesley Sokolowski

10 months ago

Very helpful, reassuring and friendly!!!I would highly recommend them!!

Dennis Gonzalez

10 months ago

I have relied on the Law office of Pietro Canestrelli for years, and I can't recommend him highly enough. His expertise is unparalleled, and he consistently delivers exceptional service. I've referred numerous clients to him, all of whom have been thoroughly satisfied with his advice and professionalism. Personally, I've also benefited from his services, and his dedicated staff always keeps me informed and impressed with their thoroughness. If you're seeking a reliable tax attorney who truly cares about your needs, Law Offices of Pietro Canestrelli are the one to trust.

Rachel Ryan

10 months ago

I am so thankful for Attorney Mark Hampton & his team!! They helped me deal with my Mom's tax issues we found out about after she was diagnosed with alzheimers. He was so nice to her, kept us informed of where he was at with our case, and we never had to pay he full amount!!

Charlie Al

10 months ago

Pietro & his team are great. Marlon was very helpful, great to work with! Always responded quickly with any questions I had.

Riku Mukherjee

10 months ago

Harry Paez

10 months ago

I have personally known Pietro about ten years. I needed legal helpa few years ago and he went above and beyond my expectations. He is honest, professional and passionate about doing the right thing for his clients.

Moriah Hefley

10 months ago

The Law Office of Pietro Canestrelli is filled with passionate, compassionate and knowledgeable professionals. They care deeply about their clients and are ready and willing to provide their excellent services to those in need of them.

Brett Moser

11 months ago

The whole team at the whole team at this office are just amazing! Friendly, welcoming, and really care about you and get to know you. From the moment you walk in the door, you will feel taken care of

Mandy Tyler

11 months ago

I had a great experience working with Mark. He was compassionate, thorough, and always kept me in the loop. He made sure I knew exactly where my case stood and his dedication to resolving my issues was impressive. He also helped me reconfigure my business so I could maximize my expenses and deductions. Highly recommend!~Mandy Tyler

Jenafer C

11 months ago

Mark is fantastic! He took the fear out of dealing with my tax problems by clearly explaining each step of the process. I had no idea someone could know so much about the workings of the IRS, and the rules in the law. HIs aggressive approach with the IRS was exactly what was needed. Five stars without a doubt!

Golden Eagle Properties

11 months ago

Attorney Pietro Canastrelli provided expert advice to me about my tax matter, putting my mind at ease. He helped me a great deal and I highly recommend him.

Micah Katke

a year ago

As a small business owner, I'm responsible for so many very different, very important things. Pietro's team's expert and trustworthy advice is a real relief. Their well organized and responsive approach means that I have to invest less time when I work with them, and it also adds to my peace of mind. This combination is invaluable, and I'll all too pleased to have found them.

Cory Venne

a year ago

I have had the pleasure of consulting with the Canestrelli's Law Office for my business needs over the course of several years, and I must express my utmost satisfaction with their exceptional service. I wholeheartedly recommend Canestrelli's Law Office to anyone seeking legal support. Their commitment to providing timely and knowledgeable responses to all my inquiries has consistently exceeded my expectations. They truly practice law with passion and compassion and I would recommend them to anyone. Without a doubt, they deserve a resounding 5-star rating. I am grateful for their invaluable assistance and unwavering professionalism.

Max Cruz

2 years ago

My life was in a tailspin and feeling real hopeless with a massive tax debts from IRS to the the tune of over $115,000 . My tax problem started when my wife filed a divorce in 2010 barely a year after my heart surgery. I had a heart attack while working in Iraq in 2009 as a government contractor. The divorce really hit me hard and I lost interest in a lot of things and neglected a lot of things. One of the things I neglected was my tax filing. I figured I always got a refund before, so even if I didn’t file my taxes the IRS wouldn’t mind because I never owed any taxes before. I always file on time and always got a refund. Also filing taxes is the last thing in my mind during the first year or two of my divorce. I was so devastated with the loss of my family and my circle of friends. I was depressed and lonely and made a lot of wrong decisions . Long story short, I neglected to file my taxes from 2011 through 2021. I started getting some IRS notices back in 2012 or so, I honestly couldn’t remember and just ignored them. On top of all this tax problems, I also lost my job in 2017. I knew I needed to do something with my tax problem. I ended up owing the IRS more than $115,000. In 2021, I was searching for a tax preparer in the internet and I came across Mr. Pietro Canestrelli’s tax controversy boutique here in Temecula. The reviews I read there were very positive and I decided to give them a call and made an appointment in November 2021. That was one of the best decision I’ve ever made in my entire life. After my first meeting with Mr. Pietro Canestrelli, I knew I was in good hands. He gave me an honest assessment of my situation. He did not give me any false hopes or any grandiose promises . He just gave me straight honest answers . That’s when I knew I can trust this person and this firm. And I was right!!! A year and 4 months later, my tax problem with the IRS was settled on March 2023. I cannot thank Mr Canestrelli and all his staff enough for the wonderful job that they did. This long testimony cannot express my deepest gratitude for the things they did for me. I can honestly say that they save my life. I feel I have a new lease on life. I now don’t have to worry about this thing and I can plan on moving on with my life.To Mr Pietro Canastrelli and all his staff, thank you all for giving me another chance of living a normal life . You will always be in my prayers and I will always owe you all a debt-of gratitude.From a very grateful and very happy customer, a veteran and a patriot, thank you all from the bottom of my heart.Very Respectfully,Max Cruz

Paul Rangel

4 years ago

The Law office of Pietro Canestrelli is an excellent company for legal advice. They listen, they help with your situation and they care for your best interest. You will not be disappointed. Temecula and Now in Menifee….

Kim Hegwood

4 years ago

Very personable attorney and will be sure you are taken care of.

Jeff Bal

5 years ago

Pietro and his team are fantastic! Very reasonable rates, very friendly and genuinely concerned with my case and needs. Will definitely recommend!

Gina Johnson

5 years ago

Very responsive, professional, and knows the ins and outs of taxes. Pietro will be my go to for all tax matters.

Sherry Powers

6 years ago

If you need a tax attorney you need to call Pietro! He is among a very small group of certified tax specialists who delivers the results you need. He and his client-focused staff are amazing and will answer your legal questions to get you moving toward a solution.

Steve Staudenmeir

7 years ago

Pietro has been very helpful to me in addressing an IRS tax penalty issue. I found him to be pleasant and knowledgeable about my options. He is a really nice guy. I am so pleased that I found him and highly recommend him to others. Thank you Pietro!.

Jeff Cecchini

7 years ago

Did a phone consult with Pietro on a couple of complex matters. I emailed him the issues before our call. I sought him out because (years prior) he co-authored the IRS guidance on one of the matters. I felt that he cared about my concerns, was generous with his time, and provided clear guidance for which he also followed up by email. Would definitely use him again.

Practice Areas

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Tax Controversy

Navigating tax laws can be complex and confusing. Our expert team specializes in identifying and resolving a wide range of tax issues, from filing and compliance to audits and appeals. We provide comprehensive guidance and representation to help you meet your tax obligations and minimize any potential liability.

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Business Law

Business law encompasses a wide range of legal issues that companies and organizations may face. From forming a corporation to drafting contracts and protecting intellectual property, our business law experts provide comprehensive legal services to help your business succeed. Contact us today to learn more.

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Tax Education

Our tax education services provide individuals and businesses with the knowledge needed to understand tax laws, deductions, and compliance requirements. These services offer guidance on tax planning strategies, IRS regulations, and financial best practices to help taxpayers minimize liabilities and avoid penalties.

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The Law Office Of Pietro Canestrelli is a distinguished tax and business law firm dedicated to providing expert legal solutions tailored to the unique needs of its clients. With a focus on taxation and business matters, the firm offers a comprehensive range of specialized services designed to navigate the intricacies of the legal landscape.

TAX RELIEF

The Law Office of Pietro Canestrelli, in Temecula and San Diego California, offers tailored advice and representation for individuals and businesses facing IRS and state tax audits. Our goal is to resolve tax disputes during audits and, when necessary, through litigation. Common audit triggers include unreported income, ineligible deductions, and errors in filing. The firm assists in navigating the audit process by reviewing documents, addressing discrepancies, and guiding responses to IRS requests.

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Tax Credits

Tax credit eligibility services help individuals and businesses determine which tax credits they qualify for, maximizing potential savings. These services analyze financial records and applicable tax laws to ensure clients claim all available credits, such as the Research & Development Tax Credit or Earned Income Tax Credit. By leveraging expert guidance, taxpayers can reduce their overall tax burden and improve their financial outcomes.

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Business Law

The Law Office of Pietro Canestrelli offers comprehensive legal assistance in business law, emphasizing the importance of legal protection in modern business complexity. We focus on both new and existing businesses’ legal needs. Business law encompasses creating new businesses and managing interactions with the public, other companies, and government. As a trusted law firm in Temecula, CA, our attorneys offer valuable advice to mitigate risks, manage legal compliance, and foster strong relationships with vendors, employees, and managers.

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BUSINESS FORMATION

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C CORPORATIONS

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S CORPORATIONS

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LIMITED LIABILITY CORPORATIONS

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BUY/ SELLING A BUSINESS

The Law Office Of Pietro Canestrelli, APC

Six Reasons to Choose Us

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Tax Law

Our Tax law knowledge encompasses the legal rules and regulations governing taxation, including the collection of taxes, tax liability determination, exemptions, and procedures for disputes. It covers various aspects of personal, business, and government taxation, ensuring compliance.

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IRS Experience

With extensive experience in IRS tax law, our firm provides skilled representation for individuals and businesses facing audits, tax disputes, and compliance issues. We navigate complex tax codes, negotiate with the IRS, and develop strategic solutions to minimize liabilities and protect our clients’ financial interests.

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Business Law

Business law refers to the legal framework governing commercial interactions and operations. Our legal team covers practice areas such as contracts, intellectual property, corporate governance, liability, and regulations. Business law ensures ethical conduct, dispute resolution, and compliance, fostering a stable environment for businesses to operate, innovate, and engage in fair transactions.

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Expertise

The Law Office of Pietro Canestrelli possesses extensive legal acumen in contract law, intellectual property, and dispute resolution. With a track record of successful negotiations and courtroom representation, we adeptly navigate complex legal challenges. Our expertise fosters strategic solutions that protect our clients’ interests and ensure legal compliance in a dynamic business landscape.

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Dedicated

Our team is driven by unwavering commitment, and Pietro’s dedication is a cornerstone of the practice. We tirelessly advocate for clients, investing thorough research, diligence, and empathetic understanding into each case. This dedication ensures our clients receive steadfast support and comprehensive representation to achieve favorable outcomes in their legal matters.

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Diverse

The Law Office of Pietro Canestrelli has diversity that is a vibrant tapestry of talents, backgrounds, and perspectives. Embracing inclusivity, they cultivate an environment where diverse legal professionals collaborate seamlessly. This enriching blend enhances innovative problem-solving and reflects a profound commitment to reflecting the multicultural dynamics of modern society within our legal practice.

The Law Office Of Pietro Canestrelli, APC

Our Locations

Law Office of Pietro Canestrelli, Temecula

43460 Ridge Park Drive, Suite 150
Temecula, CA 92590

Law Office of Pietro Canestrelli, San Diego

16776 Bernardo Center Drive, Suite 203
San Diego, CA 92128

Blog

Our Blog

How Do Tariffs Affect Business Taxes

by Pietro Canestrelli | Apr 30, 2025 | Pietro E. Canestrelli | 0 Comments

Understanding the Impact on Your Bottom Line In the ever-evolving landscape of international trade, understanding tariffs and business taxes has become critical for...

Announcing Pietro Canestrelli’s New Book: America’s Tax Defender, Stories of Taxpayers Who Fought the IRS and Won

by Pietro Canestrelli | Apr 24, 2025 | Pietro E. Canestrelli | 0 Comments

A New Era of Tax Advocacy and IRS Defense Begins The Law Office of Pietro Canestrelli, A.P.C. is proud to announce the release of a groundbreaking new book by its...

A Business Perspective on Financial Knowledge and Tax Readiness During Financial Literacy Month

by Pietro Canestrelli | Apr 22, 2025 | Pietro E. Canestrelli | 0 Comments

At The Law Office of Pietro Canestrelli, A.P.C., April is more than just the time to file taxes—it’s Financial Literacy Month, a national initiative dedicated to...

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California Tax & National IRS FAQ’s

How do I form and file taxes for my business?

Forming a business involves several steps. Choose a business structure (e.g., LLC, corporation), register it with your state, and obtain necessary licenses. Obtain an Employer Identification Number (EIN) from the IRS. Consult legal and financial professionals to ensure compliance. For taxes, file accordingly based on your chosen structure: sole proprietorship (Schedule C), partnership (Form 1065), LLC (varies), corporation (Form 1120). Report income, expenses, deductions accurately. Consider estimated quarterly payments. Keep meticulous records. Tax requirements vary, so professional advice is recommended. Properly managing formation and taxes is crucial for business success.

What deductions and credits am I eligible for?

Individuals and businesses consistently seek clarity on deductions and tax credits to minimize their tax liabilities. Common inquiries involve deductions like mortgage interest, student loan interest, business expenses, and credits such as the Earned Income Tax Credit, Child Tax Credit, and Education Credits.

What should I do if I’ve received a notice from the IRS?

If you’ve received a notice from the IRS, it’s crucial to remain calm and take prompt action. Start by thoroughly reviewing the notice to understand the issue. If you agree with the information, follow any instructions provided. If you disagree, gather relevant documents and prepare a well-documented response. It’s advisable to consult a tax professional or attorney for guidance to ensure you’re addressing the matter accurately and efficiently. Avoid delays, as some notices have time-sensitive deadlines. Open communication and timely resolution are key, whether it involves clarifying information, providing documentation, or setting up a payment plan if required.

How can my business minimize our tax liability legally and effectively?

Companies often consult IRS attorneys on strategies to reduce their tax burden legally, including clarification on eligible deductions, credits, business structures, and compliance with IRS rules to avoid audits, penalties, or legal complications.

What should our business do if the IRS claims we owe significant back taxes, penalties, or interest?

Businesses facing substantial IRS assessments commonly seek guidance on disputing or resolving these claims. They often inquire about options like filing appeals, negotiating penalty abatements, requesting an Offer in Compromise, setting up payment plans, or exploring alternative legal defenses to resolve their controversy effectively and minimize financial damage.