BUILDING BRIDGES FOR CLIENT SUCCESS

Moore Tax Law Group, LLC is a leading firm in the tax community for a reason. We work tirelessly to accomplish incredible results on behalf of our clients when faced with a civil or criminal tax dispute.

TURN TO US WHEN THE STAKES ARE HIGH

Moore Tax Law Group, LLC resolves high-stakes civil and criminal tax disputes on behalf of taxpayers who have significant conflicts with the Internal Revenue Service, Department of Justice, Tax Division, and state tax authorities. Clients from around the world turn to us because of our extensive experience and nationally recognized reputation as leaders in the field of tax and white collar defense. We are not afraid to take on complex tax issues and resolve conflicts with the government.

We always try to get to the right result without resorting to litigation. But when that isn’t possible, we have the experience and the grit to litigate. We’ve tried cases in courts across the country, appearing in United States Tax Court, United States Court of Federal Claims, Courts of Appeal throughout the country, and the Supreme Court of the United States. We’ve been there before and we know what it takes to win.

Moore Tax Law Group, LLC is driven by a guiding principle: working to ensure a fair and just administration of the tax system for all taxpayers. When the IRS shows up we are ready: we know the rules, we know the players, we know the winning strategies. We make sure our clients have every procedural advantage possible, and we work to resolve your specific issue as efficiently as possible.

OUR PRACTICE AREAS

Civil Tax Controversy and Litigation

Representing individuals, family offices, and companies in high-stakes civil tax disputes before the Internal Revenue Service

Criminal Tax Investigations and Defense

Representing individuals and companies in connection with criminal tax investigations

Internal Investigations

Assisting companies and family offices with conducting independent inquiry into alleged misconduct or identifying possible shortfalls in reporting

State Tax Disputes

Representing individuals, family offices, and companies in high-stakes civil tax disputes before the Illinois Revenue Departments

Specific Areas of IRS Enforcement

Representing individuals, family offices, and companies in high-stakes areas of emerging IRS enforcement such as ERC, ultra high net worth, high income non-filers, and cryptocurrency

White Collar Defense

Representing individuals and companies in connection with criminal investigations

OUR PHILOSOPHY

Moore Tax Law Group, LLC is driven by a guiding principle: working to ensure a fair and just administration of the tax system for all taxpayers. The tax system in the United States is based on self-reporting. Taxpayers are expected to calculate and self-report the correct amount of tax due. When a dispute arises between the IRS and the taxpayer regarding whether the taxpayer correctly calculated that tax, we stand ready to help. Taxpayers deserve excellent representation, they deserve to be treated fairly, and they deserve to have the law correctly applied to the facts of their case. This is true whether the case is criminal or civil.

Each case brings a new section of the Internal Revenue Code. But the procedure we follow to protect our clients is the same in every case. We know the rules. We work tirelessly to make sure that the IRS follows them in civil cases. We will fight and file motions to ensure rights are preserved in criminal cases. Our entire system of tax administration – civil and criminal – is more fair and just for everyone when those in power are held accountable to the rules and taxpayer rights are protected. We take the same approach with civil and criminal cases, paying clients and pro bono clients: we will fight for taxpayer rights and fair administration of the tax laws.

IN THE NEWS

ALL NEWS

April 23, 2025

Moore Tax Law Group Announces Promotion of Director of Investigations

Managing Member Guinevere Moore is proud to announce the promotion of Kathy Enstrom to Chief Operating Officer! Kathy will also continue in her vital role as Director of Investigations, where her leadership and expertise have been instrumental to our success.

March 28, 2025

Employee Retention Credit: Potential Penalties

In their third article of an exclusive three-part series for Tax Notes about the Employee Retention Credit, Managing Member Guinevere Moore and Attorney Lauren Darwit discuss penalties that taxpayers or tax practitioners could face for claiming–or assisting others in claiming–the ERC.

March 18, 2025

Firm’s Attorneys Author Exclusive Tax Notes Article Titled “The Path to Challenging an Ignored, Disallowed, or Clawed-Back ERC Refund Claim”

Managing Member Guinevere Moore and Associate Attorney Lauren Darwit co-authored an article exclusively for Tax Notes titled “The Path to Challenging an Ignored, Disallowed, or Clawed-Back ERC Refund Claim.” The article discusses the various possible paths to administrative or judicial review for those taxpayers whose ERC refund claims are challenged by the government.

ALL NEWS

POWERFUL TAX ADVOCATES ON YOUR SIDE

Different tax situations call for different types of tax advocacy, and at Moore Tax Law Group, LLC, we know when and whether to draw each weapon from our arsenal. Whether we are persuading a revenue agent to take a favorable position on an audit, negotiating with an appeals officer, cross-examining a witness at trial, drafting briefs or arguing to a three judge panel on appeal, we have the experience and the skills to advocate effectively in a way that is tailored to the audience.

We do not use autopilot to set or to follow a typical course. We employ our experience and creativity to develop a strategy that is most likely to achieve your unique goals. We think before we act, and then we think again and again throughout the handling of a tax matter to make sure that we are following the best course for you. When we hit a roadblock, we analyze all the different ways to go over it, under it or around it instead of simply continuing to drive into it.

SPEAKING ENGAGEMENTS

ALL SPEAKING ENGAGEMENTS

Jun 4, 2025

Texas Federal Tax Institute 2025

May 21, 2025

Cambridge Forum on International Tax & Disputes

May 8, 2025

American Bar Association 2025 May Tax Meeting

ALL SPEAKING ENGAGEMENTS

OUR TEAM

Shay-Ann Heiser Singh

PUBLICATIONS

ALL PUBLICATIONS

Employee Retention Credit: Potential Penalties

Guinevere Moore in Forbes: IRS To ‘Recapture’ Over 30,000 ERC Claims. Can It Do That?

The IRS plans to recapture 30,000 ERC claims using a procedure that will create headaches for taxpayers and the government.

Guinevere Moore in Forbes: IRS Reopens Voluntary Disclosure for ERC Through November

The IRS announced this week that an ERC Voluntary Disclosure Program will reopen, allowing businesses that claimed the ERC to withdraw their claims..

ALL PUBLICATIONS

WE LISTEN TO YOUR GOALS

Your priorities are our priorities. We want to understand you so that we can deliver what matters most to you. Some people value speedy resolution to tax issues even if that requires significant compromise, while others desire absolute victory at any cost. Most people fall somewhere in between. Some people tolerate risk well, while others feel tortured by it. For many, the immediate tax conflict we are handling is part of a much bigger picture that we need to understand in order to give meaningful guidance. Our first priority is to listen and learn what matters to you so that we can tailor our strategy to achieve your unique goals.

AWARDS + RECOGNITION

Moore Tax Law Group LLC was ranked Tier 2 by ITR 2025 World Tax under the practice area USA Regional -Illinois: Tax Controversy. Attorney Guinevere Moore was recognized as a Highly Regarded Practitioner the practice area United States: Tax Controversy. Guinevere has been recognized by ITR World Tax since 2022

Moore Tax Law Group LLC was ranked Band 2 by Chambers and Partners’ High Net Worth Guide 2024: USA – Nationwide under the practice area Tax: Private Client. Moore Tax Law Group has been recognized in this category since 2023. Attorney Guinevere Moore was recognized in the High Net Worth Guide 2024 as Band 1 under the practice area Tax: Private Client. Guinevere has been recognized for this area since 2022. Guinevere Moore was also recognized in the USA Guide 2024 as Band 3 under the practice area Tax: Controversy, Illinois. Guinevere has been recognized for this area since 2023.

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