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Tax Expert Witnesses

Tax consequences drive the economics of many business decisions, so disputes over tax treatment frequently surface far outside the tax court. Clients sue accountants and law firms when tax advice, return positions, or shelter opinions fail under audit, buyers and sellers litigate tax indemnities, purchase price allocations, and the value of tax attributes acquired in a transaction, and partners contest allocations of income, deductions, and credits under operating agreements. Multinational groups face transfer pricing challenges, while companies dispute state and local tax obligations, sales and use tax exposure, and property tax assessments. In each setting, the central question is whether a tax position was supportable under the law and professional standards in effect at the time, and what financial harm followed if it was not.

A tax expert evaluates that question by reconstructing the facts, authorities, and professional judgments behind a disputed position. The expert can analyze returns, workpapers, opinion letters, and transaction documents, assess whether a practitioner met applicable standards of care and disclosure, and determine how the governing statutes, regulations, and guidance applied to the transaction at issue. In transaction and partnership disputes, the analysis extends to calculating tax liabilities, the value of lost or mischaracterized attributes, and the after-tax effect of competing allocation methods. These findings help counsel establish or rebut malpractice and indemnity claims, connect specific errors to assessed taxes, penalties, and interest, and measure damages that reflect the actual tax consequences rather than hypothetical outcomes.

Tax disputes demand experts whose technical knowledge matches the specific area of tax law and whose professional experience lends credibility before courts and arbitrators. Round Table Group works with former and current Big Four professionals, former Internal Revenue Service staff, and university professors, along with specialists in transfer pricing, state and local taxation, partnership and corporate tax, insurance company and captive taxation, research and development credits, and trust and estate taxation. Many are CPAs and attorneys who have testified on tax shelter opinion standards, accounting malpractice, valuation, and economic damages, and some have led professional committees on forensic and litigation services. Drawing on more than 75,000 expert searches for litigators, we can help you identify the right tax expert for your case by calling us at (202) 908-4500.

Kinds of Cases We Work On

Round Table Group helps our clients find a wide variety of Tax expert witnesses for cases like:

01

Transfer Pricing Study Disputed by Tax Authority.

A multinational corporation disputed a tax authority's rejection of its transfer pricing study, alleging the authority's comparable company selection for an intercompany royalty arrangement was methodologically flawed. We identified experts with experience in transfer pricing economics, comparable company analysis, and international tax methodology. The transfer pricing expert's revised comparable set found the original royalty rate was within an arm's-length range, supporting the corporation's position in the tax controversy.
02

M&A Tax Indemnification Escrow Dispute Follows Audit.

An acquirer sought release of an escrowed tax indemnification fund after a post-closing audit revealed the target company's pre-acquisition tax filings understated a significant liability, a claim the sellers disputed. We identified experts with experience in corporate tax due diligence, M&A tax indemnification structuring, and tax liability quantification. The tax due diligence expert's liability analysis confirmed the understatement, supporting the acquirer's claim to the escrowed funds.
03

Accounting Firm Faces Tax Opinion Malpractice Suit.

A corporation sued its accounting firm alleging a tax opinion supporting a corporate restructuring transaction failed to identify a step that later triggered an unexpected tax liability upon IRS challenge. We identified experts with experience in corporate tax planning, tax opinion drafting standards, and restructuring transaction analysis. The tax planning expert's opinion review found the analysis met accepted professional standards given the guidance available at the time, defeating the corporation's malpractice claim.
04

R&D Tax Credit Consultant Disputes Disallowed Claims.

A technology company sued an R&D tax credit consulting firm alleging its documentation methodology for qualified research expenses was inadequate, resulting in a substantial portion of claimed credits being disallowed upon audit. We identified experts with experience in R&D tax credit methodology, qualified research expense documentation standards, and technology industry tax practices. The tax credit methodology expert's documentation review found the methodology met accepted professional standards at the time of filing, defeating the company's malpractice claim.
05

Commercial Property Tax Valuation Dispute Reaches Appeal.

A commercial property owner appealed a county tax assessor's valuation of an office tower alleging the assessment relied on outdated occupancy and rental rate assumptions following a significant market downturn. We identified experts with experience in commercial property tax valuation, real estate appraisal methodology, and market rent analysis. The property tax valuation expert's revised appraisal found the assessment overstated the property's value, resulting in a reduced tax assessment on appeal.
06

State Tax Nexus Dispute Names E-Commerce Retailer.

A state tax authority sued an e-commerce retailer alleging its network of third-party fulfillment warehouses within the state created sufficient economic nexus to trigger sales tax collection obligations the retailer had not honored. We identified experts with experience in state tax nexus standards, e-commerce fulfillment operations, and multistate tax compliance. The tax nexus expert's operations analysis found the fulfillment arrangement met the nexus threshold, supporting the state's claim for back taxes.
07

Renewable Tax Credit Monetization Dispute Reaches Mediation.

A tax equity investor and a renewable energy developer mediated a dispute over the monetization value of investment tax credits after a change in IRS guidance altered the credits' recapture risk profile mid-transaction. We identified experts with experience in renewable energy tax credit structuring, tax equity finance, and IRS guidance interpretation. The tax equity finance expert's recapture risk analysis supported a revised credit valuation, resolving the dispute through mediation.
08

Tax-Exempt Bond Compliance Dispute Threatens Issuer Status.

A municipal issuer disputed a bond compliance consulting firm's finding that a private business use threshold was exceeded on a tax-exempt facility bond, alleging the consultant's usage calculation methodology was flawed. We identified experts with experience in tax-exempt bond compliance, private business use analysis, and municipal finance regulatory standards. The bond compliance expert's usage recalculation found the threshold was not exceeded, supporting the issuer's position and preserving the bonds' tax-exempt status.
09

International Tax Firm Disputes VAT Compliance Failure.

A multinational corporation sued an international tax consulting firm alleging its VAT compliance review for a new European subsidiary failed to identify a registration requirement, resulting in significant penalty assessments. We identified experts with experience in international VAT compliance, cross-border tax registration standards, and multinational tax advisory practices. The VAT compliance expert's review found the registration requirement was ambiguous under the guidance available at the time, defeating the corporation's malpractice claim.
10

Tax Software Vendor Disputes Calculation Engine Defect.

A corporate tax department sued a tax compliance software vendor alleging a defect in the platform's calculation engine caused systematic underpayment of estimated quarterly tax liabilities across several subsidiaries. We identified experts with experience in tax software systems, corporate tax calculation methodology, and enterprise software quality assurance. The tax software expert's calculation audit confirmed a formula error in the engine, supporting the corporation's breach of warranty claim.

Here are a few of our favorite Tax Expert Witnesses:

Tax, Regional Tax Issues Expert #23791

I have 7 years of experience, and specialize in the field of taxation with specific knowledge in the areas of Hong Kong tax, China tax and regional tax issues.

 

North Carolina Transfer Pricing, Tax Expert #26785

I have 30 years of experience, and specialize in the field of economics with specific knowledge in the areas of taxation, transfer pricing and minieral taxation. I have published on such topics as taxation, minieral taxation and taxation and development.

 

New York Law, Tax, Valuation Expert #28935

I have 25 years of experience, and specialize in the field of law with specific knowledge in the area of transactional aspects. I have published on such topics as business acquisitions and dispositions, asset protection, entity selection and trusts. I have testified on valuation.

 

Texas Tax, Payroll, Bookkeeping Expert #31364

I have 10 years of experience and specialize in the field of accounting and tax preparation, with specific knowledge of accounting, tax and payroll.

 

Washington Tax, Record Keeping Expert #32533

I have 8 years of experience, and specialize in the field of taxation with specific knowledge in the areas of audit representation, tax law and small business tax. I have published on such topics as small business recordkeeping.

 

Your Case Deserves The Best Tax Expert Witnesses

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The right expert witnesses and consulting experts can make your case. That’s why we have spent so many hours over the past quarter century making sure our clients have just the right expert team — whether one expert or many, early-stage advice or expert reports and testimony. Across over 50,000 expert search assignments, we have honed a unique, customized approach to identifying, analyzing and connecting with expert talent so you can focus on winning your case.

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Virginia Estates, Tax, Tax Code Expert #33703

I have 25 years of experience in the field of trusts and estates, with specific knowledge in the areas of tax, financial management and asset protection. I have published on such topics as Uniform Trust Code, asset protection, fiduciary and confidential relationships.

 

Florida Forensic Accounting, Tax Expert #34577

I have 23 years of experience, and specialize in the field of accounting and tax with specific knowledge in the areas of forensic accounting, business valuations and tax. I have testified on QuickBooks, financial statements and fraud.

 

Florida Tax, Tax Director, Retail Expert #35016

I have 20 years of experience and specialize in the field of real estate, with specific knowledge of residential, retail, office and commercial property operations, large-scale land development, and country club, association, apartment, hotel, and conference centers.

 

Virginia Tax, State, Local, Government Expert #35819

I have 22 years of experience and specialize in the field of taxation, with specific knowledge of state and local tax, state government and public finance. I have published on such topics as property tax, corporate tax and sales tax. I have testified on corporate tax and property tax.

 

Colorado Tax, Lost Profit, Forecasting Expert #35964

I have 25 years of experience, and specialize in the field of finance with specific knowledge in the areas of accounting, tax and law. I have published on such topics as securities law, tax law and finance. I have testified on finance, accounting and tax.

 

Pennsylvania Tax, Accounting Expert #36347

I have 16 years of experience, and specialize in the field of taxation with specific knowledge in the area of personal. I have published on such topics as tax and personal finance.

 

Pennsylvania Ratio Studies, Auditing, Tax Expert #37313

I have 25 years of experience, and specialize in the field of accounting with specific knowledge in the areas of audit, tax and damage calculations. I have published on such topics as printing industry ratios, hourly cost rates and printers guide to profits. I compile annual financial ratio study for a nonprofit trade association that is the premier competitive benchmarking tool for graphic arts companies.

 

Maryland Printing Companies, Tax Expert #37318

I have 25 years of experience, and specialize in the field of accounting with specific knowledge in the areas of tax, damage calculation and business management consulting. I have published on such topics as research and development tax credit, budgeting and forecasting (financial planning) and sales and use tax.

 

Utah Appraiser, Valuation, Tax Expert #40462

I have 27 years of experience, and specialize in the field of real estate appraisal, with specific knowledge in the areas of valuation, consulting and expert witness. I have testified 20 times on topics such as eminent domain, divorce and tax appeal. I always ensure that the customer was provided the utmost in service and professionalism and that their experience was at minimum what they were expecting.

 

South Dakota Tax, Litigation Support Expert #43834

I have 15 years of experience, and specialize in the field of accounting with specific knowledge in the areas of taxation, litigation support. I have published on such topics as honest services fraud.

 

New Jersey Tax, Business Consulting Expert #44398

I have 23 years of experience, and specialize in the field of accounting and tax with specific knowledge in the areas of corporate and partnership taxation and non profit organizations. I have testified on economic damages.

 

Missouri Insurance, Tax, Corporate Expert #45362

I have 17 years of experience, and specialize in the field of tax with specific knowledge in the areas of corporate tax, taxation of insurance companies and accounting for income taxes. I have published on such topics as captive insurance comapnies.

 

Michigan Ethics, Discrimination, Tax Expert #47183

I have 18 years of experience, and specialize in the field of church and state law with specific knowledge in the areas of free exercise clause, establishment clause and religious land use statute. I have published on such topics as religious land use, religious autonomy and religious discrimination.

 

Maryland Tax, Securities, Fraud, Planning Expert #47948

I have 24 years of experience, and specialize in the field of estate planning with specific knowledge in the areas of generation skipping taxes, qualified plans and individual retirement account distributions planning and laws and trust planning. I have published on such topics as individual retirement account distribution planning. I have testified on fiduciary issues in trust administration, securities fraud and individual retirement account distribution rules.

 

South Carolina Social, Tax, Finance, Crime Expert #47961

I have 15 years of experience, and specialize in the field of economics with specific knowledge in the areas of legalized gambling, casino impacts and social costs. I have published on such topics as tax revenues, casinos, crime and economic growth effects of casinos. I am recognized as one of the top experts in the world on the economics of gambling.

 

New York Credit, Tax, Assets, Mortgage Expert #50815

I have 13 years of experience, and specialize in the field of loan originations with specific knowledge in the areas of mortgage broker and mortgage banker. I have published on such topics as understanding credit. The best compliment that we can get as a loan officer is repeat business from a client. I find that once a client closes with me, they will generally contact me again, whether for a new purchase or a refinance.

 

Texas Real Estate, Insurance, Tax Expert #51063

I have 34 years of experience, and specialize in the field of trust real estate administration with specific knowledge in the areas of trust administration, real estate law and contract negotiation. I have testified on real estate and fiduciary matters. I moved quickly through banking management to head a state wide department.

 

Georgia Actuarial Science, Pension, Tax Expert #51801

I have 17 years of experience, and specialize in the field of actuarial science with specific knowledge in the areas of pension, loss of income and actuarial work. I have published on such topics as retirement risks and pension matters. I am the youngest director of an actuarial science program at a major research university globally.

 

Pennsylvania SEC complaince, Tax, Auditing Expert #52739

I have 33 years of experience, and specialize in the field of forensic accounting with specific knowledge in the areas of economic damages, business valuation and accounting malpractice. I have published on such topics as discounting future damages, the impact of first day trading gains and valuations of real property. I have testified 99 times on topics such as lost profits, shareholder disputes, property loss, the value of a business and accounting malpractice. I am the past chairman of a CPA Committee on Forensic and Litigation Services.

 

Put Our Tax Expert Network to Work for You

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Our huge network of experts – eminent university professors and practitioners who have achieved renown as thought leaders in their fields – combined with unparalleled research capabilities puts the experts you need at your disposal when and where you need them.

If you’re a litigator or general counsel, we want to put this network to work for you and your clients. Let us know how we can help by calling us at (202) 908-4500 or filling out the form on this page. We’re so confident you’ll love what we do that unless you retain an expert we present there’s no charge!

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Questions Attorneys Ask About Tax Expert Witnesses:

A tax expert is needed when liability or damages depend on how tax law applied to a transaction, return position, or business structure, or on whether tax advice met professional standards. Accounting and legal malpractice claims involving tax advice, M&A tax indemnity and purchase price allocation disputes, partnership allocation conflicts, transfer pricing controversies, and state and local tax disputes commonly require this expertise. Early engagement helps counsel identify which returns, workpapers, and advisor communications will be decisive.
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Tax Workshops

A few of the courses and workshops led by our Tax experts:

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Accounting
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