IRS audits for S corporations are most commonly triggered by paying shareholder-employees unreasonably low salaries to avoid payroll taxes, having high gross receipts ( > $ 1 𝑀 > $ 1 𝑀 ), reporting consistent losses, or unmatched income/deductions. Other triggers include large, round-number deductions, misclassified employees, and personal expenses claimed as business expenses.
If the records of your corporation show that the owner is receiving minimal or no salary, you are likely to face an audit. Owners of S corporations generally must be paid reasonable compensation for their services.
The likelihood of your small business being audited
For the returns it had examined as of May 2024, the IRS has audited business tax returns at the following rates: Partnership: 0.1 percent. S-corporation: 0.1 percent. All corporations: 0.4 percent.
That being said, it's important to be aware of “triggers” for IRS audits, below is a list of some of the more egregious items.
You're required to take reasonable salary if you perform services for the corporation. Taking zero salary while receiving distributions is an automatic red flag. Large distributions with minimal reported compensation inconsistent with the services performed triggers audit selection.
The "2% rule" for S Corporations treats shareholders owning more than 2% of the company's stock (or voting power) differently for fringe benefits, classifying them like partners in a partnership, not regular employees; this means benefits like health insurance premiums paid by the S Corp must be included as taxable wages on their W-2, rather than being tax-free, though the shareholder can often deduct these premiums as an "above-the-line" deduction. This rule prevents them from participating in tax-advantaged Section 125 cafeteria plans, making benefits like Health FSAs unavailable on a pre-tax basis.
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.
The IRS uses several different selection methods: Random selection and computer screening - sometimes returns are selected based solely on a statistical formula. We compare your tax return against "norms" for similar returns.
Business- Section 44AB(a)
A business is required to get an income tax audit if its total sales/turnover/gross receipts exceed ₹1 crore in a financial year. However, the limit for tax audit has been relaxed to ₹10 crore if: Cash receipts ≤ 5% of total receipts, and. Cash payments ≤ 5% of total payments.
Translation: S Corps are less likely to be audited than individual taxpayers. In fact, S Corps have among the lowest audit rates of any business entity type. The IRS tends to focus its limited resources on high-risk categories: large corporations, high-income individuals, and returns with obvious red flags.
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.
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.
There are five potential threats to auditor independence: self-interest, self-review, advocacy, familiarity, and intimidation. Any lack of independence compromises the integrity of financial markets.
It's good to be specific, but there's a danger in words such as “everything,” “nothing,” “never,” or “always.” “You always” and “you never” can be fighting words that can distract readers into looking for exceptions to the rule rather than examining the real issue.
If the deductions, losses, or credits on your return are disproportionately large compared with your income, the IRS may want to take a second look at your return. Taking a big loss from the sale of rental property or other investments can also spike the IRS's curiosity.
The 5 Cs of audit (Criteria, Condition, Cause, Consequence, Corrective Action) are a framework for structuring clear, actionable audit findings, explaining what should be (Criteria), what is found (Condition), why it happened (Cause), what the impact is (Consequence/Effect), and how to fix it (Corrective Action/Recommendation) to drive organizational improvement and compliance.
Here's a list of seven symptoms that call for attention.
In 2025, tax authorities are using advanced analytics and AI to identify audit risks more accurately than ever. While the chances of an audit remain relatively low, certain patterns and red flags on a tax return can significantly increase your odds.
1st, 2nd, and 3rd party audits classify audits by who performs them, differing in objectivity and purpose: a 1st Party Audit is internal self-assessment for improvement; a 2nd Party Audit is by a customer or partner on a supplier for relationship management; and a 3rd Party Audit is by an independent body for certification and public credibility.