Audits feel chaotic from the inside because nobody hands you the map. Here is the map - the stages every examination moves through, and the decision points where the outcome actually gets made.
Selection and First Contact
Most audited returns are picked by scoring algorithms that flag statistical outliers, by document matching that catches unreported income, or by connection to another audit. Selection is not an accusation; it is arithmetic. First contact comes by letter - never by phone call demanding payment, which is the signature of scammers - and the letter defines the type: correspondence audit by mail on narrow issues, office audit at an IRS location, or field audit at your business for the complex cases.
The Information Stage
The examiner issues information document requests listing what they want to see. This stage is the audit. Documents get assembled, organized, and delivered against each request - complete on what is asked, silent on what is not. Issues the examiner can verify quickly tend to close quickly; gaps invite expansion into other line items and sometimes other years. The pace is managed too: extensions are routine, and a rushed response is usually a damaged one.
Findings and the Fork in the Road
The examination ends with a report: no change, agreed adjustments, or proposed adjustments you dispute. Sign an agreed report and the additional tax gets assessed - so nothing gets signed until the numbers and the penalty positions are actually right. Disagree, and the 30-day letter gives you the path to Appeals, where an independent officer can settle based on the hazards of litigation.
Ignore everything, and eventually the Notice of Deficiency arrives - the 90-day letter - opening the Tax Court window. That deadline is rigid, and missing it converts a disputable proposal into an assessed debt.
Where Representation Changes the Map
At every stage there is a version of events where the taxpayer responds personally, volunteers generously, and signs what is put in front of them - and a version where counsel controls the flow, contests the contestable, and preserves every appeal right on the calendar. The tax difference between those versions is routinely the largest number in the whole case. If you are anywhere on this map right now, call me and I will tell you exactly which stage you are in and what the next move is.