What an IRS Tax Audit Really is, and How the IRS Starts One
An IRS tax audit is the federal tax agencies’ review of an individual’s or business’s books, accounts, and financial records to verify that the return reported income, deductions, credits, and tax correctly under federal law. Selection for audit does not automatically mean the IRS believes you committed fraud. The IRS says returns may be selected through random selection and computer screening based on statistical norms, or through related examinations involving business partners, investors, or other connected taxpayers. The IRS also states that filing an amended return does not protect the original return from selection, and that receiving a refund is not necessarily an audit trigger.
Just as important, the IRS says it will notify you of an audit by mail and will not initiate the audit by telephone. In-person examinations may later involve calls from the assigned revenue agent, but the first contact should be written. The IRS explains that audits are conducted either by correspondence or in person. An in-person audit may take place at an IRS office, at your home, at your business, or at your representative’s office. That means one of the first practical questions is not whether the IRS contacted you at all, but whether the contact method matches actual IRS procedure and whether the notice identifies a mail audit, office audit, or field audit.
What the IRS Can Ask for in an Audit, and What You Should Do First
The IRS says it will give you a written request for the specific documents it wants to review, and those requests should focus on the records you used to prepare the return. IRS guidance expressly says the request should not require you to create something new. The agency may accept some electronic records, and for correspondence audits, it instructs taxpayers to send copies rather than original documents. This matters because taxpayers often make a dangerous mistake at the start of an audit by trying to rebuild, “clean up,” or improve records after the fact. In a routine case that can undermine credibility. In a high-risk case, it can begin to look like intentional concealment or manipulation of the record.
You should approach the first audit response strategically. Taxpayers who retain representation generally do not have to attend an interview with their representative unless the IRS formally summons them, and that in most situations the IRS must suspend an interview if the taxpayer asks to consult a representative. Those rights matter even more when the audit involves large deductions, unreported income, related entities, offshore accounts, payroll problems, cash-intensive operations, or any facts that could support fraud.
How Far Back an IRS Audit Can Go, How Long it Can Last, and Why Statute Decisions Matter
The IRS says most audits involve returns filed within the last two years, and generally, it can include returns filed within the last three years. If the agency identifies a substantial error, it may add additional years, and it says it usually does not go back more than the last six years. The broader statutory rule is also critical. The IRS states that the normal assessment period is generally three years from the date the return was filed, that the period extends to six years if omitted income exceeds 25 percent of the gross income shown on the return or involves more than $5,000 attributable to foreign financial assets, and that there is no assessment limit when a taxpayer files a fraudulent return or no valid return.
Audit timing also affects defense strategy. The IRS says that if an audit is not resolved, it may ask the taxpayer to extend the statute of limitations for assessment. That is never a routine administrative detail. Extending the statute gives the government more time to develop issues, expand the scope, and negotiate from a stronger position. In some cases, a limited extension tied to specific issues may be strategically preferable to a broad extension. In others, refusing to extend may force the IRS either to narrow its case or issue a statutory notice of deficiency before it is fully prepared. That decision should be made carefully because once the IRS issues a Notice of Deficiency, it generally cannot extend the 90-day Tax Court petition deadline merely because the taxpayer needs more time to gather support.
What Happens When You Disagree with the Audit, and When a Civil Audit Starts Looking Criminal
If you do not respond by the deadline on the audit notice, the IRS says it can complete the audit and issue an audit report with proposed changes. If you disagree with proposed changes, the IRS Independent Office of Appeals serves as the administrative forum for contesting many compliance actions, and IRS materials point taxpayers to Publication 556, Publication 3498, and other appeals resources. In many audit cases, the taxpayer first receives a 30-day letter giving time to provide information or request Appeals review. If the matter is not resolved and the IRS issues a statutory Notice of Deficiency, the taxpayer generally has 90 days from the date of the notice, or 150 days if addressed outside the United States, to petition the U.S. Tax Court without first paying the proposed deficiency. That deadline is one of the most important dates in the entire audit process.
A closed audit does not always end the matter. Audit reconsideration may be available when the taxpayer did not respond to the original audit, moved and did not receive the correspondence, has additional information the auditor did not consider, or otherwise disagrees with the assessment while the liability remains unpaid. That can be valuable in the right case, but it is not a substitute for handling the original audit correctly when the stakes are high. Once the IRS has locked in facts, assessed tax, and begun collections, the taxpayer usually has fewer clean options than during the active examination itself.
The most dangerous audits are those that begin as civil examinations and develop firm indications of fraud. The IRS’s fraud handbook states that civil personnel are trained to recognize badges of fraud and that fraud is substantiated by affirmative acts, called firm indications of fraud, taken to deceive or defraud. The IRS also maintains formal criminal-referral procedures once those facts are developed. That means an audit involving false documents, altered books, concealed income, nominee accounts, inconsistent explanations, double sets of books, or fabricated deductions is not just a documentation problem. It is a case that can move from civil adjustments to a civil fraud penalty case or to a life-altering criminal tax referral if handled poorly.
Contact the Tax Law Offices of David W. Klasing if You Are Facing an IRS Tax Audit
At the Tax Law Offices of David W. Klasing, we approach IRS audits as more than a document-production exercise. Our boutique California tax firm is comprised of award-winning, nationally recognized dual-licensed Tax Attorneys and CPAs, and we combine over 75 years of tax and business experience to help taxpayers resolve complex federal and international tax issues. That matters because an audit defense strategy should account not only for the immediate issue the IRS identified, but also for related-year exposure, related-entity exposure, appeal rights, statute decisions, and whether the facts suggest high-risk eggshell or reverse-eggshell audits.
Our dual-licensed Tax Attorneys and CPAs can help you screen whether the notice is legitimate, define the scope of the examination, control the flow of records and explanations, and determine when an audit should be resolved through substantiation, negotiation, Appeals, Tax Court positioning, or a broader civil and criminal tax defense strategy. Where risk already exists, our CPAs work under attorney supervision as part of the legal team to support the delivery of legal advice and to help preserve applicable attorney-client privilege and work-product protections as the law allows. That structure can be critical when the IRS is no longer just checking arithmetic and is instead evaluating intent, credibility, and patterns across years or entities.
If you received an IRS audit notice, if the IRS is requesting books and records you cannot cleanly support, or if the examination has begun to expand across years, issues, or related taxpayers, this is the stage to act. The IRS itself says taxpayers have the right to challenge the government’s position, appeal in an independent forum, retain representation, and know the maximum amount of time the IRS may audit a tax year. Using those rights effectively before a civil audit turns into a civil fraud case or a criminal tax investigation is where experienced audit defense makes the greatest difference. Call the Tax Law Offices of David W. Klasing at 800-681-1295 for a confidential, reduced-rate initial consultation HERE.
