When Your Tax Preparer Got It Wrong —
A Written Analysis of Your Options
CPA, enrolled agent, registered tax preparer, or bookkeeping service made a costly mistake on your return? You may have a malpractice claim — but the facts, the engagement letter, the deadlines, and the available legal theories vary widely from case to case. The firm reviews these matters, identifies whether a viable claim exists, and recommends next steps. The starting point is a structured questionnaire you complete on your own time.
Call toll-free: (888) 275-2620 or
Email: Docs@RonCookLawFirm.com to request the questionnaire.
Tax preparer mistakes are common, expensive, and most clients don’t know whether what happened to them is malpractice or just an unfortunate outcome. The wrong election, a missed deduction, a mishandled corrective distribution, an incorrectly filed FBAR, a multi-state filing error — any of these can cost real money in tax, penalties, and interest. Sometimes the preparer’s engagement letter forecloses a claim. Sometimes it doesn’t. Sometimes the deadline to act is already running. Sometimes a well-positioned demand letter resolves the matter quickly. Working out which situation you’re in requires reviewing the actual facts.
The firm reviews potential tax preparer malpractice matters and provides a written analysis of available legal theories, realistic recovery range, jurisdictional posture, and recommended next steps.
Who This Is For
Common situations the firm reviews:
Filing errors that triggered IRS or state action. A return was prepared incorrectly and the IRS or a state taxing authority is now seeking additional tax, penalties, or interest. Notice of Deficiency, CP2000, NY DTF Notice of Determination, or similar.
Bad advice on a transaction. The preparer’s advice on the timing of a sale of a home, exercise of stock options, conversion of a retirement account, or similar transaction caused unexpected tax consequences that proper advice would have avoided.
Retirement account mistakes. The preparer gave advice on a corrective distribution, contribution limit, RMD, or rollover that resulted in a penalty or forfeited benefit. 401(k) and IRA fact patterns are common.
Missed deductions, credits, or elections. A deduction, credit, or tax election that should have been claimed was missed, and the time to amend is now closed or contested.
Foreign-asset reporting failures. FBAR (FinCEN Form 114), Form 8938, Form 8621 (PFIC), or other foreign-reporting obligations were missed, mishandled, or filed late, leading to penalties that can be enormous relative to the underlying account values.
Multi-state filing problems. Multi-state returns prepared inconsistently, leading to double taxation, missed credits, or audit exposure.
Conflicting advice. The preparer gave advice that conflicted with what you were told by a financial advisor, plan administrator, employer, or other professional, and you relied on the wrong source.
Preparer disclaiming responsibility. The loss has materialized and the preparer is now declining to acknowledge any error or assist with remediation.
If your situation does not match any of the above, request the questionnaire anyway. The fact patterns vary widely.
Why Tax Preparer Mistakes Often Go Uncompensated
People assume the engagement letter eliminates any claim. Often it doesn’t. Engagement letters do not always cover what people think they cover, scope-limitation clauses do not always survive challenge, and some defenses fail when actually tested. The engagement letter has to be read in light of the specific facts, not assumed to be dispositive.
People assume the loss has to be huge to be worth pursuing. It does not. Most tax preparers and CPAs carry professional liability (“errors and omissions” or E&O) insurance with policy limits in the hundreds of thousands or low millions of dollars. A well-positioned demand letter to a preparer with E&O coverage often resolves matters that would never justify the cost of litigation. The carrier evaluates the claim economically and frequently settles to avoid defense costs.
People don’t know which state’s law applies. The preparer may be in one state, the client in another, the work performed remotely. The applicable law, the proper forum, the available legal theories, and the limitations period all depend on conflict-of-laws analysis that most non-lawyers cannot do for themselves.
People don’t realize multiple legal theories may apply. Beyond simple negligence, claims may sound in breach of contract, breach of fiduciary duty (in jurisdictions and engagements where one exists), consumer protection statutes (in NY, General Business Law §§ 349 and 350 may apply in some fact patterns), fee disgorgement, and others. Different theories have different elements, different damages rules, and different limitations periods.
People don’t realize parallel administrative tracks exist. Complaints to state CPA boards (for CPAs), the NY State Office of the Professions (for licensed practitioners), the IRS Office of Professional Responsibility (for enrolled agents and Circular 230 practitioners), and state tax preparer registries can be useful even when civil litigation is not — sometimes producing remediation, refunds, or insurance-driven settlement that civil action could not.
People don’t know how to value the claim. Without a realistic recovery range, the rational decision — pursue, demand, complain, or let it go — cannot be made.
What the Analysis Covers
If the firm engages on the matter, the written analysis addresses:
- Legal theories your facts actually support — negligence, breach of contract, breach of fiduciary duty (where applicable), consumer protection, fee disgorgement, and others as the facts warrant. Theories that do not apply are also identified, so you don’t waste time on them.
- Strength assessment — an honest read on which theories are likely to succeed and which are likely to fail, based on the documents and facts available
- Realistic recovery range — what the matter is plausibly worth in pre-suit settlement, what it is plausibly worth in litigation, and where the upper and lower bounds fall on your facts
- Documentation gaps — the documents and proof you would need to assemble to maximize recovery, and what gaps in proof would weaken the claim
- Engagement letter analysis — whether choice-of-law, forum-selection, arbitration, or scope-limitation language materially affects where and how the claim can proceed
- Time-sensitive issues — limitations periods, repose periods, IRS or state correction windows, and other deadlines that affect timing
- Pre-suit demand strategy — whether a demand letter is worth sending, what it should say, to whom, and whether the preparer’s E&O carrier should be put on notice
- Parallel administrative options — whether complaints to the NY State Education Department Office of the Professions, the IRS Office of Professional Responsibility, state CPA boards, or the IRS Return Preparer Office are appropriate
- Counsel referral — whether specialized litigation counsel is needed, what kind, and in what jurisdiction. The firm maintains working relationships with experienced tax malpractice litigation counsel and expert-witness CPA firms.
- Recommended next steps in priority order
What the Analysis Does Not Cover
The analysis is a roadmap, not the journey. It does not include:
- Tax advice or tax-return preparation
- Calculation of the tax consequences of any potential recovery
- ERISA, retirement-plan, or benefits-plan legal advice
- Expert-witness CPA review or retention (separate referral if warranted)
- Litigation, demand letter drafting, or representation in any forum
- Direct contact with the preparer, the IRS, or any state tax authority on your behalf
If you decide to act on the analysis, that is a separate engagement.
Ready to start? Request the questionnaire.
Call (888) 275-2620 or email Docs@RonCookLawFirm.com
How It Works
Request the Questionnaire
Call (888) 275-2620 or email Docs@RonCookLawFirm.com to request the intake questionnaire. Tell us briefly what kind of preparer was involved (CPA, EA, registered preparer, bookkeeper) and the general nature of the issue. This is also when we run a basic conflict check — if the firm has a relationship with the preparer or their firm that would prevent us from analyzing a malpractice claim against them, we’ll tell you immediately and refer you elsewhere.
Complete on Your Own Time
The questionnaire covers the parties and engagement, scope of work, alleged errors, causation, damages, timeline and notices, communications and records, insurance and complaints, prior or parallel proceedings, damages mitigation, and authorization for next steps. Most clients complete it over a few sittings. Attach or describe the relevant documents (engagement letter, returns, IRS or state notices, correspondence with the preparer). Return the completed questionnaire by email.
Initial Review and Engagement Decision
Attorney Cook reviews the completed questionnaire and supporting documents to determine whether the matter is one the firm can analyze, what the appropriate scope is, and what fee structure makes sense for your specific situation. You receive a written engagement letter with the scope and fee agreed in advance. No work is performed and no fee is owed until the engagement letter is signed.
Written Analysis Delivered
The completed analysis is delivered as a written document. You keep the document and use it to make decisions — whether to send a demand letter, retain litigation counsel, file a board complaint, pursue settlement, or close the matter. The deliverable is yours and can be shared with other counsel if you choose.
Geographic Scope
Tax preparer matters are frequently multi-state. The preparer may be in one state, the client in another, the work performed remotely. The firm’s analysis scope reflects this honestly:
| Matter Type | Scope |
|---|---|
| Federal tax matters | Analysis available nationwide. Federal tax law applies uniformly; the firm can analyze federal tax preparer malpractice regardless of which state the preparer or client is in. |
| New York state tax matters | Analysis available. NY tax law and the NY State Department of Taxation and Finance procedures are within the firm’s scope. |
| Other states’ state tax matters | Not analyzed. Substantive analysis of another state’s tax law would require admission in that state. The firm will identify the issue and refer to qualified counsel in the relevant jurisdiction. |
| Litigation in any forum | Not handled by the firm. The analysis identifies whether litigation is warranted, what kind of counsel is appropriate, and where the matter properly lives. The firm refers to experienced tax malpractice litigation counsel where the matter warrants representation. |
About the Firm
Ronald S. Cook, PC is a New York law firm. Attorney Ronald S. Cook holds a J.D., dual LL.M. degrees in Bankruptcy and Taxation, and an MBA. The firm has practiced in New York for over 25 years. Tax practice areas include taxpayer-side audit defense, Offer in Compromise, Voluntary Disclosure, FBAR/FATCA compliance, Responsible Person assessments, and related matters — the same body of substantive law that informs tax preparer malpractice analysis from the other side.
The firm has over 3,000 client testimonials across Google, BBB, Trustpilot, and other platforms. View verified client reviews.
Frequently Asked Questions
What if I’m not sure whether my situation qualifies?
Request the questionnaire anyway. The questionnaire is free to request and complete. If your situation isn’t a fit after review, the firm will tell you and refer you to a more appropriate resource where one exists.
What if I’m already past a deadline?
One of the things the analysis addresses is whether deadlines have run, and which deadlines — statutes of limitations, statutes of repose, IRS amendment windows, state-specific deadlines, contractual notice requirements — apply to your facts. Don’t assume a deadline has run before having someone competent look at it. Some deadlines have discovery rules, equitable tolling, or other extensions that aren’t obvious.
What if the preparer is in a different state?
Common. The questionnaire and the analysis address the multi-state situation directly. For federal tax matters, the firm can analyze regardless of where the preparer or client is located. For state tax matters in states other than NY, the firm identifies the issue and refers to qualified counsel.
What if I want to handle the matter myself?
The analysis is designed to support exactly that. Many clients who pursue these matters never retain litigation counsel — a well-drafted demand letter or board complaint resolves the issue at the E&O carrier level. The analysis tells you whether you are likely to be in that group based on your facts, and what specifically would need to be in the demand letter or complaint.
Will the analysis tell me whether I have a claim?
Sometimes the answer is yes, sometimes no, sometimes “yes but not the one you thought.” Honest analysis is the value proposition. If you do not have a viable claim, the analysis says so — which is also useful, because most clients in that situation prefer to know rather than spending months wondering.
Is the questionnaire confidential?
Information shared with the firm during intake is treated as confidential under NY Rule of Professional Conduct 1.18 (duties to prospective clients), regardless of whether the firm ultimately engages on the matter. Submitting the questionnaire does not by itself create an attorney-client relationship — that relationship is created only when an engagement letter is signed.
Can I share the analysis with another lawyer or expert?
Yes. The deliverable is yours. Many clients share the analysis with the litigation counsel they ultimately retain, or with a separate expert-witness CPA evaluating the matter on the technical accounting side.
What does the analysis cost?
Fee structure is determined after the questionnaire is reviewed, based on the document volume, complexity, and scope of analysis appropriate to your specific facts. The fee is agreed in writing in the engagement letter before any work begins. Requesting and completing the questionnaire is free.
What if I want to retain the firm to act on the analysis?
That is a separate engagement. The firm does not handle tax malpractice litigation directly — the analysis identifies whether litigation is warranted and refers to experienced tax malpractice litigation counsel where appropriate. For pre-suit demand letters, board complaints, or other administrative steps that fall within the firm’s scope, the firm may be available to handle them under a separate engagement.
How long does the analysis take?
Turnaround depends on document volume, the complexity of the questions presented, and current workload. The engagement letter specifies the expected delivery timeframe.
Request the Questionnaire
Call toll-free: (888) 275-2620. Available 24/7.
Email: Docs@RonCookLawFirm.com
When you call or email, briefly identify the type of preparer involved (CPA, enrolled agent, registered tax preparer, bookkeeping service) and the general nature of the issue (filing error, bad advice, missed election, foreign reporting, multi-state, or other). The firm will run a basic conflict check and send you the questionnaire.
Suffolk County Office: 12 Bank Avenue, Smithtown, NY 11787
Nassau County Office: 1225 Franklin Avenue, Suite 325, Garden City, NY 11530
Our law firm has over 3,000 client testimonials across Google, BBB, Trustpilot, and other platforms. View verified client reviews.
Related pages: Tax practice · IRS and NYS tax audit assistance · FBAR and FATCA compliance · Litigation · Contact the firm
Last reviewed by Attorney Ronald S. Cook — May 2026
This page is for informational purposes only and does not constitute legal advice. Requesting or completing the questionnaire does not create an attorney-client relationship; that relationship is created only when an engagement letter is signed by the firm and the client. The firm does not handle tax malpractice litigation; analysis-only engagements may include referral to experienced litigation counsel where appropriate. Prior results do not guarantee future results.
