Yes, the IRS will usually let you know if they find a significant mistake on your tax return by sending you a notice or letter explaining the issue, such as a math error, an income discrepancy (like a missing W-2/1099), or a claimed deduction that doesn't make sense. They might delay your refund or request more information, but ignoring IRS correspondence is not recommended as it explains the error and how to fix it, often without needing an amended return.
After filing your original return, you may determine that you made an error or omitted something from your return. Although the IRS often finds and corrects errors during processing, there are certain situations in which you may need to file an amended return to correct an error or make other changes to your return.
If the IRS is reviewing your return, the review process could take anywhere from 45 to 180 days, depending on the number and types of issues the IRS is reviewing. Follow these steps if you know you made a mistake, before the IRS contacts you.
Does the IRS Check Every Tax Return? The IRS does not check every tax return. It does not check the majority of them, but the IRS implements methods that track certain factors that would result in a further examination or audit by them.
An IRS notice may alert you to a mistake on your tax return or that it's being audited. You can verify the information that was processed by the IRS by viewing a transcript of the return to compare it to the return you may have signed or approved.
If you make a mistake on your tax return, you usually correct it by filing Form 1040-X, Amended U.S. Individual Income Tax Return, to adjust income, deductions, or credits, but the IRS often corrects simple math errors or missing forms automatically; if you owe more tax, you'll incur interest and penalties, so fixing errors promptly with an amendment can reduce costs, but you must file it within the specified time frame, usually three years from the original filing date.
We may be able to remove or reduce some penalties if you acted in good faith and can show reasonable cause for why you weren't able to meet your tax obligations. By law we cannot remove or reduce interest unless the penalty is removed or reduced.
Most people can breathe easily because the majority of individual returns escape the audit machine. In recent years, the IRS has audited significantly less than 1% of all individual tax returns, and we expect this figure to continue to decline in the near future.
CP-Series Notice – When the IRS thinks it detects a potential issue with your tax return, it will contact you via U.S. mail; this is done with a CP-series notice. Please note that the IRS's first contact about a tax delinquency or discrepancy will never be a phone call or email.
IRS audits are triggered by discrepancies the IRS's automated systems catch, like unreported income from 1099s, claiming excessive deductions (charity, business meals, home office) compared to your income bracket, large business losses, math errors, significant income jumps, or claiming hobby losses as business expenses, with higher-income earners generally facing more scrutiny.
The IRS $600 rule refers to a change in reporting requirements for third-party payment apps (like Venmo, PayPal) for taxable income from goods and services, where platforms must send a Form 1099-K if you receive over $600 in a year, intended to capture gig economy/side hustle income, though delays and phased implementation have adjusted the timeline, with current rules for 2024 using a higher threshold ($5,000) before fully phasing to $600 for future years, but remember all taxable income, regardless of form, must always be reported.
Math Error Notices (e.g., CP11 Notice): If the IRS finds a miscalculation or discrepancy on your return, they may adjust it and send a notice showing the correction. Request for Additional Information: Sometimes the IRS needs more documentation to verify items on your return, such as income, deductions, or credits.
According to the IRS , the error rate for paper returns is 21%, compared with less than 1% among e-filed returns.
The IRS can audit you.
The IRS has a formula for picking out returns to audit. The IRS is more likely to audit certain types of tax returns – and people who lie on their returns can create mismatches or leave other clues that could result in an audit. Audits can be costly and long.
However, many errors will automatically be corrected by the IRS. If it is a math mistake, a wrong number is pulled from a chart, or a supporting form is missing, the IRS will send you a notice.
First Time Abate relief and unpaid tax
Example: You didn't fully pay your taxes in 2021 and got a notice with the balance due and penalty charges. You call us requesting penalty relief and we give you First Time Abate. We remove the penalty up to the date of your request.
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.
Although many cash transactions are legitimate, the government can often trace illegal activities through payments reported on complete, accurate Forms 8300, Report of Cash Payments Over $10,000 Received in a Trade or Business PDF.
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.
Avoid These Common Tax Mistakes