Receiving an IRS audit notice can be one of the most stressful experiences for taxpayers and business owners. While audit rates have historically been low, certain factors can significantly increase your chances of being selected for examination.
At Taveras Tax Firm, we help clients understand audit risks and prepare for IRS examinations. This comprehensive guide explains what triggers audits, how to reduce your risk, and what to do if you’re selected for an audit.
Understanding IRS Audits
What Is an IRS Audit?
An IRS audit is an examination of your tax return to verify that income, deductions, credits, and other items were reported correctly. Audits can range from simple correspondence audits (conducted by mail) to comprehensive field audits (conducted in person at your business or representative’s office).
Types of IRS Audits
Correspondence Audit: The simplest form, conducted entirely by mail. The IRS requests documentation for specific items on your return. These account for the majority of audits.
Office Audit: You’re asked to bring specific documents to an IRS office for review. These typically focus on particular issues or deductions.
Field Audit: The most comprehensive type, conducted at your business, home, or tax professional’s office. IRS agents examine your books, records, and business operations in detail.
Common Audit Triggers
1. High Income
Statistically, higher earners face higher audit rates. In recent years, taxpayers earning $1 million or more have been audited at rates several times higher than average taxpayers. This is partly because high-income returns often involve more complex transactions and greater potential tax revenue if adjustments are made.
2. Unreported Income
The IRS receives copies of all Forms W-2, 1099, and other information returns. Their computer systems automatically match these against reported income on your tax return. Discrepancies trigger automatic correspondence asking you to explain the difference or pay additional tax.
This is one of the easiest triggers to avoid—simply ensure all income is properly reported.
3. Math Errors and Inconsistencies
Simple math errors on your return don’t typically trigger a full audit, but they do result in correction notices. More concerning are inconsistencies between different parts of your return or between your return and supporting schedules.
4. Excessive Deductions
Claiming deductions that are disproportionately large compared to your income raises red flags. The IRS uses statistical models to identify returns that fall outside normal ranges for particular income levels and professions.
Common areas of scrutiny include:
- Unusually large charitable contributions (especially non-cash donations)
- Home office deductions that seem excessive
- Business expense deductions that exceed industry norms
- Meal and entertainment expenses that appear unreasonably high
5. Business Losses Year After Year
The IRS distinguishes between legitimate businesses and hobbies. If you report losses for your business year after year, especially while maintaining outside employment, the IRS may question whether you’re operating a for-profit business or pursuing a hobby.
The hobby loss rule limits deductions for activities not engaged in for profit. To demonstrate business intent:
- Maintain detailed records
- Create a business plan
- Adjust operations to improve profitability
- Document time and effort invested in the business
6. Cash-Heavy Businesses
Businesses that deal primarily in cash—such as restaurants, car washes, salons, and retail stores—face higher scrutiny because cash transactions are harder to track and easier to underreport.
If you operate a cash business, implement strong internal controls and record-keeping systems to document all transactions accurately.
7. Large Cash Transactions
Banks and businesses are required to report cash transactions exceeding $10,000 on Form 8300. “Structuring” transactions—breaking them into smaller amounts to avoid reporting requirements—is illegal and can trigger criminal investigation.
8. Foreign Accounts and Assets
U.S. taxpayers must report foreign bank accounts exceeding $10,000 at any time during the year (FinCEN Form 114, also known as FBAR). Additionally, Form 8938 may be required for specified foreign financial assets.
The IRS has significantly increased enforcement in this area. Failure to report foreign accounts can result in severe penalties, even if no tax was actually evaded.
9. Claiming 100% Business Use of Vehicle
Claiming that a vehicle is used 100% for business purposes almost always raises questions. It’s statistically unlikely that you never use the vehicle for personal purposes.
Be honest about business-use percentage and maintain a contemporaneous mileage log to support your claims.
10. Round Numbers
Expenses reported in round numbers ($5,000, $10,000) suggest estimation rather than actual record-keeping. While estimating certain expenses is permitted in limited circumstances, it can attract attention.
Report actual amounts based on receipts and records rather than rounding to convenient figures.
How the IRS Selects Returns for Audit
Computer Scoring (DIF System)
The IRS uses a Discriminant Information Function (DIF) scoring system to identify returns with the highest probability of error. Returns are scored based on how they compare to statistical norms for similar taxpayers.
High DIF scores indicate greater likelihood of audit, though the exact formula is secret.
Related Examinations
If you have business or financial relationships with someone being audited, your return may be selected for examination as well. This is particularly common with business partners, related entities, and large transactions between related parties.
Random Selection
Some returns are randomly selected for audit as part of the IRS’s research programs to update their statistical models and understand taxpayer compliance patterns.
Reducing Your Audit Risk
Report All Income
This is non-negotiable. Ensure every Form W-2, 1099, and other information return you receive is properly accounted for on your tax return.
Keep Excellent Records
Maintain organized documentation for all income and expenses. Save receipts, invoices, bank statements, and other supporting documents for at least three years (longer for certain items).
Be Reasonable with Deductions
Claim all deductions you’re entitled to, but be reasonable. Extreme deductions compared to your income level will attract attention. Ensure you have proper documentation for everything you claim.
Be Honest About Business vs. Personal Use
Don’t claim 100% business use when some personal use occurs. Be honest about the business-use percentage of vehicles, home offices, and equipment.
File Complete and Accurate Returns
Double-check all math, ensure all required schedules and forms are included, and make sure information is consistent throughout the return.
Work with a Tax Professional
Professional tax preparation significantly reduces errors and ensures deductions are properly documented and claimed. A qualified tax professional understands what triggers audits and how to present your tax situation accurately while minimizing risk.
What to Do If You’re Audited
Don’t Panic
Being audited doesn’t mean you did something wrong. Many audits result in no change to the tax return. Stay calm and respond promptly to all IRS communications.
Read the Notice Carefully
Understand exactly what the IRS is questioning. Audit notices specify which items are being examined and what documentation is needed.
Gather Documentation
Collect all records, receipts, and documentation related to the items being questioned. Organize everything clearly and make copies—never send original documents to the IRS.
Respond Promptly
IRS notices include deadlines. Missing a deadline can result in automatic assessment of additional tax, penalties, and interest. If you need more time, request an extension before the deadline expires.
Consider Professional Representation
You have the right to representation during an audit. CPAs, enrolled agents, and attorneys can represent you before the IRS. For anything beyond a simple correspondence audit, professional representation is often worthwhile.
Representatives can handle communications with the IRS, helping ensure you don’t inadvertently say something that expands the scope of the audit or creates additional issues.
Know Your Rights
The Taxpayer Bill of Rights includes:
- The right to professional and courteous treatment
- The right to privacy and confidentiality
- The right to challenge the IRS’s position and be heard
- The right to appeal IRS decisions
- The right to representation
Don’t let the IRS intimidate you—you have legal protections throughout the audit process.
Possible Audit Outcomes
No Change
The IRS accepts your return as filed. This is the best outcome and happens more often than you might think, especially when you have strong documentation.
Agreed Assessment
You agree with the IRS’s proposed changes and pay any additional tax, interest, and penalties. This closes the audit without further proceedings.
Disagreed Assessment
You disagree with the IRS’s findings and can appeal through the IRS Office of Appeals. If still unresolved, you can take your case to Tax Court.
Refund
Sometimes audits result in discovering you overpaid your taxes. The IRS will issue a refund if you’re entitled to one.
After the Audit
Once the audit is complete and any additional tax is paid or resolved, the issue is generally closed for that tax year. However, if significant issues were found, the IRS may audit other years or examine similar issues in future returns.
Use the audit as a learning experience. If certain deductions or reporting methods were questioned, adjust your approach for future years.
How Taveras Tax Firm Can Help
At Taveras Tax Firm, we provide comprehensive audit support, including:
- Accurate tax preparation to minimize audit risk
- Documentation guidance and record-keeping systems
- Audit representation at all levels
- Appeal support if you disagree with audit findings
- Strategic planning to address any issues identified
We understand the stress and complexity of IRS audits and provide professional representation to protect your interests throughout the process.
Conclusion
While IRS audits can be stressful, understanding what triggers them and how to prepare significantly reduces anxiety and improves outcomes. By maintaining excellent records, reporting all income accurately, and claiming only reasonable deductions, you can minimize your audit risk.
If you are selected for audit, professional representation can make a significant difference in the process and outcome. Contact Taveras Tax Firm today for expert guidance on audit preparation, representation, and resolution.