The IRS knows if you don't send a 1099 through an automated system called the Automated Underreporter (AUR) program, which cross-references tax returns with income reported by third parties. Because recipients (contractors/vendors) report income to the IRS even if they don't receive a 1099, the IRS identifies discrepancies, often triggering a CP2000 notice for, penalties, and interest.
The IRS knows about any income that gets reported on a 1099, even if you forgot to include it on your tax return. This is because a business that sends you a Form 1099 also reports the information to the IRS. The IRS cross-references tax returns with other income records that businesses submitted.
The IRS is likely to catch a missing 1099 form. Using their matching system, the IRS can detect errors in your returns. They also receive a copy of your 1099 form, so they know exactly how much you owe in taxes. Keep all your records safely.
If a business intentionally disregards the requirement to provide a correct Form 1099-NEC or Form 1099-MISC, it's subject to a minimum penalty of $660 per form (tax year 2025) or 10% of the income reported on the form, with no maximum.
The IRS receives information from third parties, such as employers and financial institutions. Using an automated system, the Automated Underreporter (AUR) function compares the information reported by third parties to the information reported on your return to identify potential discrepancies.
The biggest tax mistakes people make include filing late, math errors, incorrect personal info (like Social Security numbers), forgetting deductions/credits (like EITC), misreporting income, not signing forms, and making errors with bank details for direct deposit, all leading to delays, penalties, or missed savings, with using tax software or professionals helping avoid these common pitfalls.
Earned Income: Employer Wages
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.
How does the IRS check every 1099? Every tax return is automatically run through an IRS computer program, which checks for common mistakes and red flags — including missing 1099 income. (If the IRS had to manually audit every single tax form by hand, it probably wouldn't.)
1099 Drawbacks
For employers: Employers cannot exercise significant control over work performed—and must pay contractors for all hours they work, unlike exempt salary employees. There is a degree of risk with misclassification and non-compliant contracts.
But for individuals filing with a Schedule C—the necessary form you must use if you have 1099 income—your odds of getting audited are higher. Overall your odds of getting audited arelikely low—just a few percent out of 100—but certain actions or deductions will increase the likelihood of investigation.
Threats of civil and criminal penalties are not enough to deter some people from cheating, so the IRS employs ways to identify individuals who skip out on their taxes. It is believed that the IRS can track credit card transactions and other electronic information, using this added data to find tax cheats.
For most payments to individuals (like contractors or for other income/rents), the 1099 reporting threshold is $600, though this increases to $2,000 for tax years starting after 2025 under new law; for payment apps (Form 1099-K), the old threshold was $20,000/200 transactions, but for 2024, a phased-in $5,000 threshold was planned, with the $20k/200 rule (and $10+ in royalties/broker payments) remaining for now for 1099-MISC. Key forms are 1099-NEC for non-employee compensation and 1099-MISC for other payments, with 1099-K for third-party platform payments.
1099 Electronic Filing: How to Check File Status from IRS Site
No, the IRS doesn't catch every instance of unreported income, but their advanced data-matching systems catch most discrepancies involving third-party reporting (like W-2s, 1099s for freelance/interest/dividends) through automated checks, leading to CP2000 notices and potential penalties if missed; however, cash income, crypto, or lifestyle mismatches can also trigger scrutiny, though it's less certain than reported income, and high-income non-filers are a current focus.
If you are worried that you forgot to file a 1099, or if you recently caught a mistake on a 1099, you typically have three years to rectify the mistake but may differ depending on the form.
The IRS requires businesses to issue a form 1099 if they've paid you at least $600 that year. Depending on your money-making activities, you may receive a few different 1099 forms to track your income.
Here are a few mistakes small business owners should avoid:
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. You can access your tax records through your account.