Key Insights
- Less than 1% of individual tax returns are audited — but it's still essential to respond correctly.
- Not responding to an IRS audit notice automatically results in the IRS position being accepted.
- Enrolled agents and tax attorneys have the same authority to represent you before the IRS as a CPA.
- TaxWave handles all IRS communication during your audit, so you never have to speak to the IRS directly.
Types of IRS Audits
Correspondence Audit
The most common type. The IRS sends a letter asking you to verify specific items on your return — usually a deduction or credit. You respond by mail with supporting documentation.
Office Audit
You're asked to bring documentation to a local IRS office. This is more in-depth and typically involves several line items on your return.
Field Audit
An IRS agent visits your home or place of business. This is the most comprehensive type and typically reserved for complex returns or business audits with potentially large adjustments.
TCMP / Research Audit
A thorough audit selected as part of IRS statistical research, requiring documentation for virtually every line on your return regardless of whether there's a specific issue.
What Triggers an IRS Audit?
- Unusually large deductions relative to your income level
- Unreported income detected on W-2s or 1099s
- Home office deductions on Schedule C
- Large charitable contributions without adequate documentation
- Rental losses that exceed passive activity limits
- Business losses reported multiple years in a row (hobby loss rules)
- Cash-intensive businesses with high reported income
- Cryptocurrency transactions not reported
TaxWave Audit Representation
When TaxWave represents you in an audit, we establish power of attorney and take over all communication with the IRS. You don't have to worry about saying the wrong thing or inadvertently expanding the scope of the audit — we handle everything.
Our team gathers your records, prepares a thorough response, and presents your case to the IRS examiner with the goal of closing the audit with no additional tax owed — or the lowest possible adjustment. If you disagree with the IRS's findings, we can appeal to the IRS Appeals Office or pursue litigation in Tax Court.
Real Questions People Ask About IRS Audits
Lack of records is one of the most common audit problems — and it doesn't automatically mean you lose. The tax code allows for reconstruction of records using secondary evidence: bank statements, credit card records, prior-year returns, business logs, testimony from clients or vendors, and industry averages. The IRS uses "Cohan rule" (from Cohan v. Commissioner) which allows estimated deductions where exact records are unavailable but there's credible evidence the expense occurred. A professional representative can build a reconstructed documentation case that the IRS will accept.
For most Americans, less than 0.5%. The IRS audited approximately 0.44% of individual returns in 2022 (IRS Data Book). However, your personal audit risk depends heavily on your income level and return complexity: returns over $500,000 face roughly 1.3% audit rates; returns over $10 million face over 8%. Self-employment income (Schedule C), large charitable deductions, home office deductions, and earned income tax credit claims all elevate risk. The IRS uses a scoring system (DISCRIMINANT INFORMATION FUNCTION, or DIF) to identify returns that deviate from statistical norms.
Correspondence audits (the most common type) can resolve in 4–8 weeks with a proper response. Office audits typically take 3–6 months. Field audits can run 6–18 months or longer for complex business returns. The duration also depends on how quickly you respond, how organized your documentation is, and whether the IRS expands the audit scope. TaxWave's goal is to resolve audits as quickly as possible by responding completely and correctly the first time.
The standard IRS audit statute of limitations is 3 years from the due date of the return (or the date you filed, if later). However, there are important exceptions: if you omitted more than 25% of gross income, the statute extends to 6 years. If you filed a fraudulent return or never filed at all, there is NO statute of limitations — the IRS can audit any year. For unfiled returns, this is especially dangerous: the 3-year clock never even starts.
Many do, but not all — and having professional representation significantly changes the outcome. Among unrepresented taxpayers, acceptance of the IRS's initial position is common because they don't know what to dispute or how to document their case. With professional representation, audits frequently close with reduced adjustments, no change, or in some cases a refund when additional deductions are identified during the audit process. The IRS's initial position is often negotiable.
Not responding is one of the worst things you can do. The IRS will automatically accept its own proposed changes — disallowing deductions, adding income, assessing additional tax, penalties, and interest — and issue a statutory notice of deficiency (90-day letter). If you don't respond to the 90-day letter, the IRS assesses the tax and begins collection. You lose your right to contest the amount in Tax Court without paying first. Missing audit deadlines can be permanently damaging.
You have the right to represent yourself — but it carries significant risk. IRS auditors are trained to ask open-ended questions that can expand the scope of the audit to other years or income sources. Many taxpayers who start by answering "a few questions" end up with broader audits than originally proposed. Under IRS power of attorney (Form 2848), TaxWave communicates with the IRS entirely on your behalf — you're never in the room or on the phone with auditors. This protects you from inadvertent disclosures.
You have several layers of appeal rights. First, you can request an IRS Appeals conference — a separate IRS officer reviews your case independently and settles a large percentage of disputes. If Appeals fails, you can petition U.S. Tax Court (before paying the tax), file a refund suit in U.S. District Court or the Court of Federal Claims (after paying), or request mediation through the IRS's Fast Track Settlement program for certain business taxpayers. TaxWave pursues every available avenue when the initial audit outcome is unjust.