A public accountant is an accounting professional who works independently of the organizations they serve, providing audit opinions, tax preparation, and advisory services to multiple outside clients rather than to a single employer. The word “public” refers to who the accountant ultimately answers to: the investors, lenders, and tax authorities who rely on accurate financial information, not the management team that pays the bill. That independent posture is what allows a public accountant’s work, especially an audit opinion, to carry weight with banks, the SEC, and the IRS.
Who Public Accountants Serve
Public accounting firms range from solo practitioners handling local tax returns to global networks with hundreds of thousands of employees. Regardless of size, every firm shares the same structural requirement: the accountant must maintain objective distance from the client’s management. The AICPA’s Code of Professional Conduct requires members in public practice to be independent in both fact and appearance when performing audit and attestation work.1AICPA & CIMA. Professional Responsibilities That means no financial stake in the client, no management role, and no personal relationships that could bias judgment.
Underneath the ethics rules sits a professional mindset called “professional skepticism,” which the PCAOB defines as “an attitude that includes a questioning mind.”2PCAOB. Professional Competence and Skepticism Are Essential to Quality Audits In practice, that means the accountant doesn’t simply accept management’s explanations at face value. When a company reports an unusually complex transaction or relies heavily on estimates, professional skepticism is what pushes the accountant to dig deeper and demand stronger evidence.
What Public Accountants Do
Audit and Assurance
The most regulated work a public accountant performs is the external audit. An audit is an independent examination of a company’s financial statements to determine whether they present fairly, in all material respects, the entity’s financial position in conformity with Generally Accepted Accounting Principles.3PCAOB. AU Section 411 – The Meaning of Present Fairly in Conformity With Generally Accepted Accounting Principles When the accountant finds no material misstatements, the result is a “clean” opinion, telling investors and lenders they can rely on those numbers.
Independence is the non-negotiable prerequisite. The SEC requires auditors of public companies to be free from financial interests in the client and from any role resembling management.4U.S. Securities and Exchange Commission. Office of the Chief Accountant The PCAOB’s ethics rules reinforce this: independence is impaired if a firm partner or professional employee simultaneously serves as a director, officer, or employee of the audit client.5PCAOB. ET Section 101 – Independence
For publicly traded companies, the audit also covers the effectiveness of internal controls over financial reporting. Not every organization needs a full audit, though. Smaller private companies often opt for a review engagement, which provides limited assurance, or a compilation, where the accountant assembles financial statements from management’s data without expressing any opinion.6AICPA & CIMA. What Is a Private Company Audit The level of assurance drops with each step down, and so does the cost.
Tax Compliance and Planning
Public accountants handle tax work for individuals, corporations, partnerships, trusts, and nonprofits. The compliance side involves preparing and filing returns in accordance with the Internal Revenue Code.7Cornell Law School Legal Information Institute (LII). Title 26 – Internal Revenue Code The real value often comes from the planning side: structuring transactions, timing asset sales, and identifying deductions before the tax year closes rather than scrambling to find them afterward.
CPAs also have the authority to represent clients directly before the IRS during examinations, appeals, and collection matters. Treasury Department Circular 230 governs who can practice before the IRS, and CPAs qualify automatically by virtue of their license.8Internal Revenue Service. Treasury Department Circular No. 230 That representation covers everything from negotiating a disputed deduction to corresponding with the IRS on a client’s behalf.9Internal Revenue Service. Office of Professional Responsibility and Circular 230 Enrolled agents and attorneys also hold this privilege under Circular 230, so CPAs aren’t the only option, but they’re often the default choice because clients already work with them on the underlying returns.
Multi-state compliance is a growing part of tax practice. Remote work and e-commerce have created tax obligations in states where a business has no physical office but does have employees or customers. Public accountants help companies figure out where they’ve triggered filing requirements, prepare returns in each relevant state, and handle sales and use tax obligations.
Advisory and Forensic Work
Advisory is the fastest-growing segment of public accounting, and it extends well beyond number crunching. Engagements include cybersecurity risk assessments, merger and acquisition due diligence, technology system implementations, and enterprise-wide risk management. Firms must carefully manage the boundary between advisory and audit work, because providing consulting services to the same client you’re auditing can create the exact kind of conflict that destroys independence.
Forensic accounting is a specialized branch where CPAs act as financial investigators. The work involves examining records to detect fraud, tracing hidden assets, quantifying financial losses, and identifying patterns of embezzlement or misrepresentation. Forensic accountants often prepare expert reports and testify in court, translating complex financial evidence into terms a jury can follow.
Public Accountant vs. Private Accountant
The core distinction is who they answer to. A private accountant, sometimes called a management accountant or corporate accountant, is an employee of a single company. Their work is internally focused: budgeting, cost analysis, management reporting, and performance measurement. They help executives make operational decisions and allocate resources. The Certified Management Accountant credential is the private-sector counterpart to the CPA, emphasizing financial planning and strategic management within organizations rather than external assurance.
A public accountant, by contrast, serves outside clients and produces work that external parties rely on. The investor reading an annual report, the bank evaluating a loan application, the IRS reviewing a tax return — all of them depend on the public accountant’s independence and competence. A private accountant cannot sign an external audit opinion on their own employer’s financial statements. That prohibition exists precisely because salaried employees lack the independence the role demands.5PCAOB. ET Section 101 – Independence
Neither role is inherently more important. A skilled corporate controller is essential to running a business well. But when outside stakeholders need to trust the numbers, the job belongs to a public accountant whose livelihood doesn’t depend on keeping that particular employer happy.
The CPA License
“Public accountant” describes the function. The credential that unlocks the most important parts of that function is the Certified Public Accountant license. Only a licensed CPA can sign an audit opinion attesting to the fairness of a company’s financial statements.6AICPA & CIMA. What Is a Private Company Audit Licensure is governed at the state level by boards of accountancy across all 55 U.S. jurisdictions, including U.S. territories and the District of Columbia.
Most states have historically required 150 semester hours of college credit, which effectively means a fifth year of schooling beyond a standard bachelor’s degree. That requirement is currently in flux: roughly half of all states have recently adopted or are actively pursuing alternative pathways that allow candidates to qualify without the extra 30 hours, often substituting professional experience instead. Candidates then sit for the Uniform CPA Examination, which was restructured in January 2024 into three Core sections plus one Discipline section chosen by the candidate.10AICPA & CIMA. Navigating CPA Evolution’s New CPA Exam Model
After passing the exam, candidates must complete a supervised work experience requirement, typically one to two years under an active CPA. Earning the license is only the beginning. CPAs must complete continuing professional education to renew, commonly 80 hours per two-year renewal period with a required ethics component. The specifics vary by jurisdiction, but the principle is universal: the profession expects its members to stay current on evolving standards, tax law changes, and emerging risks.
One boundary worth flagging. A handful of states still recognize an older Public Accountant (PA) license that predates the CPA’s dominance. New PA licenses are essentially no longer issued, and individuals who hold a grandfathered PA license generally cannot perform the full range of audit services required by the SEC for publicly traded companies.4U.S. Securities and Exchange Commission. Office of the Chief Accountant For practical purposes, the CPA license has replaced the PA designation.
Regulation and How to Verify a Credential
Public accountants operate under overlapping layers of regulation. The SEC oversees financial reporting for publicly traded companies and sets auditor independence requirements. The PCAOB, created by Congress after the Enron-era accounting scandals, sets auditing standards and inspects firms that audit public companies. State boards of accountancy handle individual CPA licensing, discipline, and enforcement. And the AICPA’s Code of Professional Conduct applies to all members, requiring integrity, objectivity, competence, and client confidentiality.1AICPA & CIMA. Professional Responsibilities
State boards can revoke, suspend, or refuse to renew a CPA’s license for dishonesty, gross negligence, incompetence, or violations of professional conduct standards. They can also impose civil penalties, require additional continuing education, or mandate a peer review of the firm’s work.11AICPA & CIMA. Final Version of New AICPA Peer Review Standards Update Now Available
If you want to check whether a CPA or firm is properly licensed and in good standing, NASBA operates a free national database called CPAverify.org. It pulls official licensing data directly from state boards of accountancy and includes markers for disciplinary actions, enforcement orders, and non-compliance.12NASBA. CPAverify: What Is It and How Can It Help Running that check before you hire a public accountant takes about thirty seconds and can save you from engaging someone whose license has been suspended or revoked.