certified public accountant
/ CPA = say the letters C-P-A /
Think of the difference between someone who is good with cars and a licensed mechanic whose signature your insurer will accept. Many people can do accounting work, but some tasks — above all, formally auditing a public company's financial statements — are reserved for a licensed professional whose competence the state has vouched for. In the United States, that license is the CPA, the Certified Public Accountant.
Becoming a CPA is demanding and is granted by individual US states, not a private club. The usual requirements are summarized as the 'three Es': Education (often around 150 semester hours of college credit, more than a standard bachelor's degree), Examination (passing the rigorous, multi-part Uniform CPA Exam), and Experience (a period of supervised work). Once licensed, a CPA must keep up continuing education and follow a code of professional conduct, and only a CPA can sign the audit opinion that accompanies a public company's financial statements. CPAs work far beyond auditing, too — in tax, advisory, forensic accounting, and as company finance leaders.
The CPA matters because it is the trust badge of the profession: when a CPA signs off, users rely on that license as a signal of competence and accountability, backed by the threat of losing it. Two honest clarifications: the CPA is a US credential — other countries have their own (the UK and many Commonwealth nations use the Chartered Accountant, or CA; there are also the CMA for management accounting and the CIA for internal auditing). And holding a CPA does not by itself guarantee ethical behavior; it raises the stakes by making the holder formally accountable when they fall short.
A small business hires a bookkeeper to keep its day-to-day records — no license needed. But when the business wants a bank loan and the bank demands audited financial statements, only a licensed CPA can perform that audit and sign the opinion the bank will trust. The license is what unlocks that specific, legally reserved task.
Anyone can keep books, but only a licensed CPA can sign a public audit opinion.
CPA is a US license granted state by state, not a universal title — elsewhere the equivalent is often the Chartered Accountant (CA). And not every accountant is a CPA: a bookkeeper, a tax preparer, or a corporate accountant may do excellent work without the license, which is required mainly for signing audits.