Your next audit may be an "audit lite"
In-person audits with an IRS agent are becoming more uncommon. The IRS is instead handling many routine reviews through form letters called correspondence audits.
These IRS letters are a kind of “audit lite” the agency uses to ask for clarification and justification of specific deductions on your tax return. Common issues that trigger a correspondence audit are large charitable deductions, withdrawals from retirement accounts and education savings plans, excess miscellaneous deductions, and small business expenses.