An audit is a procedure, not a verdict
Most of what business owners call "an IRS audit" does not look like an inspector walking into the office. It is a letter. The agency asks you to explain one or two items on the return — income, an expense, a deduction — and to attach documents. By the IRS's own numbers, these mail examinations make up the bulk of audits; in-person meetings happen far less often and on more complex cases.
For a foreign-owned company one detail matters here. What gets examined is the return, not the person or their citizenship: whether the figures reconcile, whether related-party reporting was filed, whether a loss is explainable. An audit asks "show that the return is correct," not "explain why you are foreign." And that question is far easier to answer when the documents were gathered over the year rather than reconstructed under a deadline.
How a company ends up under audit
The first and main mechanism is automatic. The IRS runs the return through a statistical model and compares it with the profile of similar companies. The further the numbers sit from the expected range, the more likely a manual review. The agency states plainly that random selection and computer screening are a primary method: the system evaluates a return "based solely on a statistical formula."
The second mechanism is related examinations. If your counterparty, partner, or an affiliated company is under audit, your return can be pulled in next, because it reflects the same transactions from the other side.
Foreign-owned companies have their own typical triggers. A missing or late Form 5472. Related-party transaction amounts that do not match between the US and the foreign side. Years of zero or loss returns against a live turnover. Round, "even" expense figures that read like an estimate rather than bookkeeping. None of these is a violation on its own — but each adds a question to the return, and questions accumulate.
Three formats of examination
Audits differ not in severity but in format — and the format decides what actually happens.
A mail audit (correspondence audit) is the most common. A letter arrives listing the items that need explanation and documents. You reply by mail or through your account. Per IRS rules, for this kind of audit you can get a one-time automatic 30-day extension to prepare your response if you request it in writing. Most cases close at this level and never turn into a meeting.
An office audit happens when the agency needs to work through several related questions and finds it easier to do so in conversation. You are invited to an IRS office with a specific list of documents.
A field audit is the deepest format: an examiner comes to the place of business, the accountant, or the representative. This is how complex structures and large amounts are reviewed. For a typical non-resident company with clean reporting it is a rare scenario — but it is the one worth being ready for in advance, because here they look at the whole picture, not a single line.
How far back the IRS looks
This is where fear and the rules give different answers. As a general rule, returns filed within the last three years are in scope. If substantial errors turn up, the agency adds years — but, in its own words, usually goes no further than the last six. And most often the returns in play are from the last two years: the fresher they are, the simpler it is for both sides.
There are limits, and it is worth being honest about them. If a return was never filed, or shows signs of deliberate misstatement, no statute of limitations applies — an examination can come years later. The right to know that limit — "how long the IRS has to audit a particular tax year" — is written into the Taxpayer Bill of Rights as the right to finality. It also works in your favor: on closed years, the agency cannot reopen an audit indefinitely.
In short. Most audits are a letter with a question about one or two items, not an inspector's visit. Selection is usually automatic (a statistical model) or through related parties. Standard depth is 3 years, up to 6 with substantial errors, and no time limit on unfiled returns. Format ranges from mail to a field visit. What really decides the outcome: documents gathered on time and correct related-party reporting.
Form 5472 — where non-residents stumble most
For a foreign-owned company the most expensive knot is not the tax itself but related-party reporting. A US company that is 25% or more foreign-owned discloses transactions with its owner and related parties on Form 5472: loans, service payments, supplies, capital contributions. A single-member foreign-owned "disregarded" LLC falls under this too — it files 5472 together with a pro forma 1120, even when it owes no tax of its own.
The cost of an error here is fixed and high. Per the IRS instructions for Form 5472, the penalty for failing to file the form on time and in the manner prescribed is 25,000 dollars. The same amount applies for failing to keep the supporting records. And if the failure is not corrected within 90 days of an IRS notice, another 25,000 dollars is added for each subsequent 30-day period. This is not a penalty that gets waived on the first explanation: we covered its mechanics in detail in our pieces on the automatic Form 5472 penalty and on how it is challenged.
So an audit that touches 5472 follows a simple logic: the agency checks whether the forms were filed, whether they are complete, and whether the amounts match what the other side of the transaction reports. A discrepancy here is not a dispute over interpretation — it is arithmetic, and it is closed with documents, not arguments.
Your rights during an examination
Taxpayer rights are the last thing owners think of, and that is a mistake — they change the very tone of the conversation with the IRS. The Taxpayer Bill of Rights has ten points; a few matter most in an audit.
The right to representation. You are not required to talk to the IRS yourself. With a power of attorney, your tax professional handles the communication entirely — and that is often the better outcome, because an owner's stray sentence in correspondence sometimes costs more than the disputed item itself.
The right to challenge the IRS position and be heard. You may disagree, present documents and objections, and the agency must consider them rather than simply issue a bill.
The right to appeal in an independent forum. If you cannot settle with the examiner, the case goes to a separate body — the IRS Independent Office of Appeals, which was not part of the audit.
The right to finality. You are entitled to know the deadlines: how long the agency has to audit a year and to collect. That is what keeps an examination from stretching out indefinitely.
How an audit ends
An audit has three possible endings, and the agency names them directly: "no change," "agreed," and "disagreed." The first — the return is confirmed, no questions. The second — you accept the adjustment and pay. The third — you disagree, and this is where the appeal procedure begins.
First comes a letter with the proposed changes and a deadline to respond — usually 30 days. If the additional tax and penalty for the period is 25,000 dollars or less, IRS rules allow a small case request; above that, a formal written protest is required. The examination office tries to resolve the case first, and only then does it move to the independent Appeals office.
If Appeals does not settle the disagreement either, the last stop is judicial: the agency issues a statutory notice of deficiency, and from that point the taxpayer has a set period to petition the US Tax Court before the assessment becomes final. Very few cases reach this stage — but its very existence is the reason it pays to speak to the IRS through documents and a representative, not emotion.
How you prepare for an audit in advance
The paradox of an audit is that it is won not when the letter arrives but a year or two before. When the request comes, one company has its books in order — bank statements, contracts, invoices, forms filed on time — and the reply takes a few days. Another has to rebuild all of it against a deadline, and every mismatch turns into a fresh question from the examiner.
We deliberately avoid step-by-step "how to survive an audit yourself" instructions here — because real preparation is not in steps but in keeping the books and reporting in a state where you can return to any year and have it all reconcile. For a non-resident company that means, above all, clean and timely tax reporting, an accurate Form 5472 with amounts that match the other side, and preserved source documents. Dull — yes. But that dullness is exactly what turns a frightening envelope into a week of correspondence.
How Edeal runs this
An IRS audit rarely touches a single line — it reaches the whole chain: how the company is set up, how the books are kept, how returns and related-party reporting are filed. Sorting that out once the letter has already arrived is costlier and more stressful than keeping it in order from the start.
At Edeal we run bookkeeping and tax support so that the company is audit-ready by default: the books close on time, forms (including 5472) are filed correctly, and documents are kept and retrievable in days rather than weeks. If an audit has already started, we take over IRS communication on your behalf under a power of attorney — from the reply letter through appeals — while the CPA team owns the numbers. We do not offer workarounds and do not promise to "make it go away": the goal is a return that holds up on its own, so you run the business, not the correspondence.
Got a letter from the IRS, or want to prepare in advance?
On a consultation we will work through your situation, assess the risk on your returns and Form 5472, and, where needed, take over bookkeeping, reporting and IRS communication.
FAQ
How does a foreign-owned company get selected for an IRS audit?
Most often the selection is automatic: a computer scores the return against a statistical formula and compares it with similar businesses, and some audits arrive through related examinations when a counterparty or partner is already under audit. The IRS names random selection and computer screening as one of the main selection methods. For foreign-owned companies, related-party reporting is added on top: a missing or mismatched Form 5472 is a common reason to look closer.
How far back can the IRS audit your returns?
As a general rule the IRS includes returns filed within the last three years. If substantial errors are found, it adds years, but usually goes no further than the last six years. Most audits focus on returns filed within the last two years. Where there are signs of fraud, or a return was never filed, no statute of limitations applies.
How large is the Form 5472 penalty?
Per the IRS instructions for Form 5472, the penalty for failing to file the form on time and in the manner prescribed is 25,000 dollars. The same penalty applies for failing to keep the required records. If the failure is not corrected within 90 days of an IRS notice, an additional 25,000 dollars is added for each subsequent 30-day period.
Can you dispute the result of an IRS audit?
Yes. If you disagree with the outcome, you have the right to appeal to an independent body, the IRS Independent Office of Appeals. When the additional tax and penalty for the period is 25,000 dollars or less, the IRS rules allow a small case request; above that, a formal written protest is required. The right to representation and the right to appeal are set out in the Taxpayer Bill of Rights.