What usually triggers an audit?

What usually triggers an audit includes a combination of statistical anomalies, mismatched information, and specific red flags that make a return stand out from norms. The IRS uses automated systems to compare income reported on your return with W-2s, 1099s, and other third party information, and any large discrepancy triggers a notice. Unusually high deductions compared to your income level, such as charitable contributions that are disproportionately large, or business expenses that wipe out most income on Schedule C, trigger audits. Claiming 100 percent business use of a vehicle, large meal and entertainment deductions, or repeated business losses that look like a hobby rather than a business are common triggers. High income itself increases audit likelihood, especially over $500,000. For businesses, large cash transactions, payroll that does not match, or being in a cash intensive industry like restaurants triggers attention. Other triggers include failing to report foreign bank accounts, cryptocurrency transactions, large alimony payments, rental real estate losses, and Earned Income Tax Credit claims with errors. The IRS also uses a discriminant function score that rates how far your return deviates from similar returns, with high scores selected for audit.