Title tag: Tax Attorney vs CPA for an Audit: Who to Hire | KR Taxes
Meta description: Facing an IRS or ADOR audit? See exactly when a CPA is enough, when you need a tax attorney, and when you actually need both.
Most IRS and Arizona Department of Revenue audits are resolved with a CPA or enrolled agent handling the case, and no attorney ever gets involved. But a specific set of situations genuinely require a lawyer, not because a CPA lacks the technical skill, but because of what a CPA legally cannot protect. Here's how to tell which situation you're in before you hire anyone.
Key takeaways
- For the large majority of civil audits, a CPA or enrolled agent is enough. Both have unlimited rights to represent you before the IRS, the same as an attorney.
- CPAs and enrolled agents have a limited privilege under IRC §7525, but it does not apply in criminal tax matters or state and local tax proceedings, and it never covers the underlying work of preparing a tax return.
- If your audit shows signs of what the IRS calls "badges of fraud" (unexplained deposits, missing income sources, altered records), a CPA's communications with you offer no protection if the case is referred for criminal investigation.
- An attorney can hire your CPA through a Kovel arrangement, extending full attorney-client privilege to the accounting work, something a CPA cannot do on their own.
- In Arizona, CPAs and enrolled agents can represent you at ADOR's administrative hearing level under a specific Arizona Supreme Court rule, but only a licensed attorney can represent you in Arizona Tax Court.
- The safest approach when you're unsure: consult an attorney first, even for a single conversation, before you or your CPA say anything that can't be protected later.
What a CPA or enrolled agent can actually do in an audit
Both CPAs and enrolled agents have unlimited rights to represent taxpayers before the IRS, meaning they can handle any audit, appeal, or collection matter regardless of who prepared the original return. This authority comes from Circular 230, the Treasury regulations governing everyone who practices before the IRS, and the IRS spells out exactly what each credential authorizes in its guide to understanding tax return preparer credentials and qualifications. For a standard audit, being asked to substantiate deductions, explain a discrepancy, or walk through a Schedule C, a CPA or enrolled agent's technical accounting knowledge is often more directly useful than a general tax attorney's, and typically at a lower cost. The IRS's own audit guidance confirms taxpayers have the right to representation by an authorized representative of their choice, and for most examinations, that's exactly where the case starts and ends.
The privilege problem: what CPAs can't protect
Here's what a lot of taxpayers don't realize until it matters: communications with a CPA are not protected the same way communications with an attorney are. IRC §7525 extends a limited privilege to "federally authorized tax practitioners," including CPAs and enrolled agents, for tax advice. But that privilege has real limits written directly into the statute. It only applies to noncriminal tax matters before the IRS or noncriminal tax proceedings in federal court. It does not apply in criminal tax matters, it does not apply in state or local tax disputes, and it does not cover the underlying work of preparing a tax return in the first place, only advice given separately from that preparation.
The U.S. Supreme Court settled the broader question decades before §7525 existed: there is no general accountant-client privilege at common law. In United States v. Arthur Young & Co., the Court held that an independent accountant serves a "public watchdog" function rather than a confidential advisor role, which is precisely why the accountant-client relationship never received the same protection as the attorney-client relationship. §7525 narrowed that gap, but only partway, and only for the specific situations Congress wrote into the statute.
When the situation actually calls for an attorney
A handful of specific circumstances shift the calculation:
Any sign of criminal exposure. IRS examiners are trained to watch for what the agency's own manual calls "badges of fraud": consistent income omissions, unexplained large cash transactions, two sets of books, or a pattern of understated income across multiple years. If a revenue agent identifies firm indications of fraud, the civil audit can be suspended and referred to IRS Criminal Investigation, often without the taxpayer being told. A CPA's testimony and work papers from the civil phase are generally not protected from being used later in a criminal proceeding. This is the single biggest reason to bring in an attorney immediately if you have any reason to believe your situation involves more than an honest mistake.
Litigation, or the real possibility of it. Once a dispute moves beyond the administrative audit and into Tax Court or federal district court, representation is generally limited to attorneys, with one notable exception unique to the Tax Court itself: under IRC §7452, a non-attorney who passes the Tax Court's own written bar examination can be admitted as a United States Tax Court Practitioner (USTCP) and represent taxpayers there on equal footing with attorneys. Fewer than 300 people nationwide hold this credential, and it doesn't carry attorney-client privilege even though it carries litigation rights, so for most taxpayers facing Tax Court, the practical choice remains between an attorney and a specialized USTCP, not a general CPA or enrolled agent without that additional credential.
Multi-state or complex privilege situations. Since §7525 doesn't extend to state and local tax matters at all, a state-level audit that could escalate, or one that runs alongside a separate federal issue, is a scenario where attorney-client privilege matters more, not less.
How attorneys and CPAs work together: the Kovel arrangement
The two professionals aren't mutually exclusive, and in higher-stakes situations, using both in the right order is standard practice. When an attorney needs accounting expertise to advise a client but wants the accountant's work protected by attorney-client privilege, the attorney can retain the CPA directly under what's known as a Kovel arrangement, named for United States v. Kovel, a 1961 case in which the Second Circuit held that a non-lawyer accountant working under an attorney's direction and supervision could be covered by the attorney-client privilege. The key structural requirement is that the client hires the attorney, and the attorney hires the accountant, not the other way around. Structured correctly, this lets a CPA's technical work (reconstructing records, analyzing transactions, preparing financial exhibits) stay protected under a privilege that exists only through an attorney relationship.
Arizona's specific wrinkle: administrative hearings vs. Tax Court
Arizona adds a layer that's worth understanding if your audit is with the Arizona Department of Revenue rather than the IRS. Under a rule adopted by the Arizona Supreme Court, a taxpayer may be represented by a CPA or other federally authorized tax practitioner, not just an attorney, in an administrative hearing before ADOR or the Office of Administrative Hearings. This means a routine ADOR audit, informal conference, or administrative protest can generally be handled entirely by a CPA or enrolled agent, the same as a federal audit. That changes if the dispute isn't resolved administratively and moves to the Arizona Tax Court or the Arizona Board of Tax Appeals as formal litigation: at that point, representing another party in court is the practice of law, and only a licensed attorney can appear on your behalf.
A practical way to decide
Ask these questions before you hire anyone, and if you're starting from scratch, the IRS's own guide to choosing a tax professional is a reasonable starting point for verifying credentials either way:
- Is this a routine request for documentation or an explanation of a specific line item? A CPA or enrolled agent is typically sufficient.
- Do I have any unreported income, questionable deductions, or record-keeping issues I'm worried the examiner will interpret as intentional? Loop in an attorney before you or your CPA say anything further.
- Has the tone of the audit changed, has the examiner gone quiet, started asking about intent rather than numbers, or mentioned a "special agent"? Stop talking and call a criminal tax attorney immediately.
- Is this an Arizona state audit that's still at the administrative level? A CPA or EA can generally handle it. Has it moved to Tax Court? You need an attorney.
- Am I unsure which category I'm in? That uncertainty is itself a reason to get at least a short attorney consultation before proceeding.
For the overwhelming majority of audits, a qualified CPA or enrolled agent with the right technical knowledge of your return is not just adequate, it's usually the more cost-effective and more directly useful choice. The calculation changes the moment privilege matters more than technical accuracy, whether that's because of potential criminal exposure, looming litigation, or a state proceeding where the federal privilege rules never applied in the first place. Knowing which situation you're actually in, before you start talking to an examiner, is the decision that matters most.
Facing an IRS or ADOR audit and not sure where your case falls? K&R's IRS Representation team, staffed by credentialed CPAs and enrolled agents, handles civil audit representation, notices, and negotiations directly, and can help you assess early whether your situation calls for attorney involvement before you respond to the examiner. Contact K&R to review your notice.
Frequently asked questions
Can a CPA represent me in front of the IRS the same way an attorney can? For civil matters, yes. CPAs and enrolled agents have unlimited representation rights before the IRS under Circular 230, identical in scope to an attorney's rights for audits, appeals, and most collection matters. The difference isn't representation authority; it's the scope and durability of privilege protecting what you tell them.
What exactly does the accountant-client privilege under IRC §7525 cover? It covers tax advice communications with a CPA, enrolled agent, or other federally authorized tax practitioner, to the same extent those communications would be privileged if made to an attorney, but only in noncriminal IRS matters and noncriminal federal court tax proceedings. It doesn't cover tax return preparation itself, state tax matters, or anything once a case becomes criminal.
If my CPA prepared the return that's now being audited, should I switch to a different professional? Not necessarily for a routine audit; your original preparer often knows the return best. If the audit raises questions about the accuracy or completeness of that same return in a way that could implicate your preparer's own judgment, an independent second opinion, potentially from an attorney, is worth getting before proceeding further.
What is an eggshell audit? It's a civil audit where the taxpayer is aware of an issue, unreported income, for example, that the examiner hasn't yet discovered. These situations carry real risk: continuing to answer questions as though it's a routine audit can inadvertently provide the examiner with exactly the information that triggers a criminal referral. This is a classic case for attorney involvement before any further communication with the examiner.
Does hiring an attorney mean my CPA is no longer involved? No. In a Kovel arrangement, the attorney retains the CPA directly, and the CPA's technical work continues, now under the broader protection of attorney-client privilege. You typically get both professionals' expertise, structured to protect the accounting work that would otherwise fall outside privilege on its own.
How much does adding a tax attorney typically cost compared to just using a CPA? Attorney rates for tax controversy work are generally higher than CPA or enrolled agent rates for comparable audit representation, reflecting the different training and the litigation capability involved. For a routine audit, this cost difference is usually the reason CPAs and enrolled agents remain the default choice; for situations with real privilege or criminal exposure concerns, the added cost is what buys the protection the situation actually requires.
Internal links used: IRS Representation (services, most relevant), Strategic Tax Advisory and Preparation (services), Accounting & Business Performance (services), The Best Time for Tax Planning: Today, Contact Us. All verified live via direct fetch or matching live search content this session, July 4, 2026.
External gov/academic sources used (10): 26 U.S. Code § 7525 (Cornell LII); 26 U.S. Code § 7452 (Cornell LII, Tax Court non-attorney representation); United States v. Kovel, 296 F.2d 918 (2d Cir. 1961) (Justia); United States v. Arthur Young & Co., 465 U.S. 805 (1984) (Cornell LII); IRS Internal Revenue Manual 25.1.6, Civil Fraud (badges of fraud); IRS Office of Professional Responsibility and Circular 230; IRS "Understanding Tax Return Preparer Credentials and Qualifications"; IRS "Choosing a Tax Professional"; IRS "IRS Audits" overview page; Arizona Department of Revenue Individual Income Audits page (Arizona Supreme Court Rule 31 representation rule). All verified live via search/fetch, July 4, 2026.
