Few pieces of post land with quite the same jolt as an envelope from the Internal Revenue Service marked "examination." The instinct is to assume the worst. Yet an audit is not a verdict, an accusation, or a fine — it is a request to check that what you reported matches the records the IRS already holds. Understood correctly, and answered calmly, most examinations are far less alarming than they first appear.
The word "audit" carries a weight it rarely deserves. The IRS itself prefers the term examination, and that distinction matters: an examination is a process of verification, not a presumption of guilt. The overwhelming majority are resolved by post, with documents rather than confrontation. Knowing how the system works — and what your rights are within it — is the difference between an anxious ordeal and an orderly correspondence.
This guide explains what an IRS examination actually is, what tends to prompt one, how to respond, and what happens if you disagree with the result. Because US federal tax rules are detailed and change from year to year, treat what follows as orientation rather than a substitute for advice tailored to your circumstances — and always confirm current figures and deadlines at IRS.gov.
What an IRS audit actually is
An IRS audit is a review of an individual's or organisation's accounts and financial information to confirm that the figures on a tax return are reported correctly under the law. It can conclude with no change at all, with a refund in your favour, or with additional tax owed. There are three broad types, distinguished mainly by how the IRS contacts you and how much is in question.
Correspondence audit
By far the most common, this is conducted entirely by mail. The IRS writes to ask for documents supporting a particular item — a deduction, a credit, or a source of income — and you respond by sending copies. Many correspondence audits are narrow, focused on a single line of the return, and resolved without anyone ever meeting in person.
Office audit
Here you are asked to bring specified records to a local IRS office for an interview with an examiner. Office audits typically cover a slightly wider range of issues than a correspondence audit, but they remain limited in scope to the matters set out in the notice.
Field audit
The most comprehensive type, a field audit involves an IRS agent visiting your home, business, or representative's office to examine records in greater depth. These are less common and usually reserved for more complex returns, particularly those involving businesses.
Crucially, every legitimate examination begins with a notice sent by mail. This is also a vital point of scam awareness: the IRS does not initiate an audit by telephone, email, or text message, and it will never demand immediate payment by gift card, wire transfer, or cryptocurrency. A "call from the IRS" out of the blue is, almost without exception, a fraud.
An IRS notice is an invitation to verify, not a sentence to be served. The taxpayers who fare worst are rarely those who made an error — they are those who panicked, ignored the letter, or spoke to a scammer first.
What commonly triggers an examination
Most returns are never examined, and selection does not imply wrongdoing. Some examinations are genuinely random; others follow from computer scoring that flags a return as statistically unusual. Understanding the common triggers helps you file carefully — and worry less if a notice does arrive.
No single factor guarantees an examination, but these are among the situations that more often draw IRS attention:
- Mismatched information returns. The IRS receives copies of your W-2s and 1099s directly. If the income on your return does not match what employers and payers reported, the discrepancy is flagged automatically.
- Unusually large or out-of-pattern deductions. Deductions that are disproportionate to reported income, or far above the norm for similar taxpayers, can attract scrutiny.
- Mathematical or clerical errors. Simple arithmetic mistakes and transposed figures often generate a notice in their own right.
- Random selection. Some returns are chosen by statistical sampling with no specific cause at all.
- Foreign-account and offshore issues. Undisclosed foreign accounts or assets, and inconsistencies with international reporting, are a recognised area of focus.
The single best protection is straightforward: report income completely and accurately, keep contemporaneous records to support every deduction and credit, and reconcile your return against the W-2s and 1099s you receive before you file. Accuracy at the filing stage prevents most problems before they begin.
Your rights and how to respond
Taxpayers facing an examination are not without protection. The IRS publishes a Taxpayer Bill of Rights, a set of ten fundamental rights that apply throughout any interaction with the agency — including the right to be informed, the right to quality service, the right to challenge the IRS's position and be heard, the right to appeal, the right to privacy, and the right to retain representation. These are not slogans; they shape how an examination must be conducted.
Among them, the right to representation is one of the most important. You may have an authorised representative — such as a tax adviser or attorney — deal with the IRS on your behalf, and you do not have to attend an interview in person if you are represented. With that framework in mind, the practical rules for responding are simple and consistent.
- Never ignore a notice. Doing nothing does not make an examination go away; it forfeits your chance to respond and can lead the IRS to assess additional tax based on the information it already has.
- Respond by the deadline. Every notice states a date for reply. If you need more time, ask for it in writing before the deadline rather than letting it pass.
- Answer only what is asked. Provide the specific documents and explanations the notice requests. Volunteering unrelated information can broaden the examination unnecessarily.
- Keep organised records. Retain copies of returns and supporting documents, and keep a record of every exchange with the IRS, including dates and the names of any officers you deal with.
- Be courteous and factual. An examiner is verifying figures, not pursuing a personal grievance. Clear, accurate documentation resolves most questions quickly.
- Get advice early. If the amounts or issues are significant, involve a qualified representative at the outset rather than after a position has hardened.
Outcomes and how to dispute a result
An examination ends in one of three ways: no change, an agreed change, or a proposed change you do not accept. If you agree with the IRS's conclusions, you sign to confirm and arrange payment of any additional tax, often with options to pay over time. If you disagree, you are entitled to challenge the outcome — and the system is built to let you do so.
The first route is the IRS Office of Appeals, an independent function separate from the examiners who conducted the audit. Its role is to consider disputes impartially and to reach a fair resolution without litigation wherever possible. If a matter cannot be settled there, you may ultimately take it to the United States Tax Court, which allows certain disputes to be heard before you pay the contested amount. There are also designated small-case procedures for more modest sums.
Where additional tax is owed, the IRS may add penalties and interest. Penalties are generally scaled to behaviour — an honest mistake is treated very differently from deliberate concealment — and many can be reduced or removed where you can show reasonable cause, meaning you acted in good faith and took ordinary care. The precise penalty types, rates, and relief criteria change over time, so confirm the current position on IRS.gov or with an adviser rather than relying on figures you have seen quoted elsewhere.
One further word of caution belongs here. Because the IRS name carries authority, IRS-impersonation scams are common — bogus calls, emails, and texts demanding instant payment or personal details. Genuine examinations begin by mail and proceed through documented channels. If you are ever unsure whether a contact is real, stop, do not pay or disclose anything, and verify independently through official IRS channels. This is the same impersonation playbook we describe in our work on fraud, and the same defence applies: slow down and confirm before you act.
- An IRS audit is an examination to verify your return, not an accusation — and many end with no change or even a refund.
- There are three types — correspondence (by mail), office, and field — and every genuine one begins with a mailed notice, never a cold call, email, or text.
- Common triggers include mismatched W-2s and 1099s, outsized deductions, math errors, foreign-account issues, and plain random selection.
- You have a Taxpayer Bill of Rights, including the right to representation; respond by the deadline, keep records, answer only what is asked, and never ignore a notice.
- If you disagree, you can take the matter to the IRS Office of Appeals and ultimately the US Tax Court; penalties scale with behaviour and may be reduced for reasonable cause — confirm current rules on IRS.gov.
How Crejj & Partners can help
Our tax team acts for individuals and businesses on both sides of the Atlantic, and an IRS examination is exactly the kind of moment where calm, competent representation makes a tangible difference. We help you understand precisely what a notice is asking, assemble and present the right documentation, respond within the deadlines, and deal with the IRS on your behalf so that you do not face an examiner alone. Where a result is unfair, we pursue it through the Office of Appeals and, if necessary, the Tax Court, and we work to mitigate penalties where reasonable cause can be shown. If a letter has arrived — or you simply want reassurance that your filings are in good order — the time to speak to us is before the deadline, not after it.
This article is provided for general information only and does not constitute legal or tax advice or create a solicitor–client (or attorney–client) relationship. US tax rules are complex and change; always confirm current requirements with the IRS (irs.gov) or a qualified adviser. Crejj & Partners is a fictional firm presented for illustrative purposes on this website.