Yes, the IRS sends official notification by mail if you are being audited. You will not receive a notification of an audit over the phone or by email. These letters, typically sent via U.S. Mail (often certified mail), explain which tax return is under review, identify specific items being questioned, and provide instructions on how to respond.
The IRS performs audits by mail or in person. The notice you receive will have specific information about why your return is being examined, what documents if any they need from you, and how you should proceed.
Remember, you will be contacted initially by mail. The IRS will provide all contact information and instructions in the letter you receive. If we conduct your audit by mail, our letter will request additional information about certain items shown on the tax return such as income, expenses, and itemized deductions.
Unreported income
The IRS receives copies of your W-2s and 1099s, and their systems automatically compare this data to the amounts you report on your tax return. A discrepancy, such as a 1099 that isn't reported on your return, could trigger further review.
An IRS audit letter typically contains the taxpayer's name, tax ID number, contact information, and a request for additional documentation to support claims on the tax return. It may also include the name of the IRS officer handling the case and invite the taxpayer to a meeting.
Filers most commonly receive letters from the IRS notifying them of the examination in the fall or winter months of the previous tax filing year. Yet, the auditors can mail the notifications throughout the year.
We may send you a notice or letter if:
What happens during an audit? Internal audit conducts assurance audits through a five-phase process which includes selection, planning, conducting fieldwork, reporting results, and following up on corrective action plans.
Not reporting all of your income is an easy-to-avoid red flag that can lead to an audit. Taking excessive business tax deductions and mixing business and personal expenses can lead to an audit. The IRS mostly audits tax returns of those earning more than $200,000 and corporations with more than $10 million in assets.
You know the IRS might be investigating you through official mail (first contact), phone calls (often with automated messages to IRS.gov), or in-person visits, but signs of a criminal probe include contact with IRS Criminal Investigation (CI) agents, subpoenas to you or your bank, questions to your accountant/bank, unusual account activity (freezing/refusing transactions), or agents suddenly going silent after an audit. Key indicators are official IRS letters, contact from CI special agents, third-party inquiries, and formal summonses for records, signaling serious scrutiny beyond a simple audit.
One-time forgiveness, officially known as First-Time Penalty Abatement (FTA), is an IRS program that allows qualified taxpayers to have certain penalties removed from their tax accounts.
The 7 steps in the audit process generally cover Planning, Risk Assessment, Internal Control Testing, Fieldwork/Evidence Collection, Reporting, and Follow-Up, focusing on a systematic review from initial engagement to ensuring corrective actions are taken for operational improvement. This framework ensures comprehensive evaluation, from understanding the client's business to delivering actionable insights and ensuring accountability for identified issues.
Five Common Audit Findings and How to Address Them: Insights from Page Kirk
Preparing the Audit Report
The audit report is perhaps the most critical deliverable of the audit process. It provides an independent opinion on the fairness and accuracy of the financial statements.
Audit tips and tricks key takeaways:
A notice may reference changes to a taxpayer's account, taxes owed, a payment request or a specific issue on a tax return. Taking prompt action could minimize additional interest and penalty charges.
The Internal Revenue Service (IRS) will send a notice or a letter for any number of reasons. It may be about a specific issue on your federal tax return or account, or may tell you about changes to your account, ask you for more information, or request a payment.
The IRS sends letters now (typically early in the year or year-round) for various reasons, including matching tax return info to third-party data (like W-2s/1099s), questioning discrepancies, requesting identity verification, notifying of account changes, asking for payments on balances due, or informing you about a return processing delay or change to your return, so you should always open and read IRS mail carefully, as it requires action or provides important info about your taxes, often concerning a discrepancy.
The "20k rule" refers to the traditional IRS threshold for reporting income from payment apps and online marketplaces on Form 1099-K: over $20,000 in gross payments AND more than 200 transactions in a calendar year. While a law (the American Rescue Plan) temporarily lowered the threshold to $600, recent legislation, the One Big Beautiful Bill Act (OBBBA) (OBBBA), has reinstated the $20,000/200-transaction rule for tax years starting in 2025, providing relief for casual sellers and gig workers.