A person who buys a lot of things is often described as a shopaholic.
Each year, the IRS audits around 0.5% of individual tax returns. This percentage varies depending on factors like income level and types of deductions claimed.
Laryngitis is inflammation of the voice box (larynx), leading to hoarseness or loss of voice. Pharyngitis is inflammation of the pharynx, causing a sore throat. Laryngitis primarily affects the voice, while pharyngitis primarily affects the throat.
The government audits McDonald's just like it audits any other company.
"Detecting" tax evasion can be a hard thing to do if you don't have the legal rights of a private investigator for instance. At any rate, tax evasion is not "detected" in the sense that there are certain behaviors to look for, evaders are caught.
An audit trail is a formal record or log of the financial transactions of an organization.