Yes, a missing 1099 will likely trigger an IRS audit or, more commonly, an automated notice (CP2000) for unreported income. The IRS uses automated matching systems to compare 1099s sent by payers against your filed tax return; discrepancies in income, especially for self-employed individuals, often flag returns for review.
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.
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.
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.
The penalty for not filing a 1099 form can be significant, depending on how late the form is submitted. If filed within 30 days after the due date, the penalty is $60 per form. If filed after 30 days but by August 1, the penalty increases to $130 per form.
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.
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.
Failing to report income from a 1099 can lead to unreported income penalties, interest, or even an audit.
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.
The IRS usually reviews receipts during an audit — if you don't have the receipts, you can sometimes use bank statements or credit card statements to prove your claims instead. Consequences of being audited without receipts can include additional taxes, interest, and financial penalties.
Businesses that show losses are more likely to be audited, especially if the losses are recurring. The IRS might suspect that you must be making more money than you're reporting. Otherwise, why would you stay in business? Most likely to be audited are taxpayers reporting small business losses.
If the missing 1099 is for self-employment earnings, and your net self-employment income is at least $400 for the year, you should file a Schedule SE with your amended return. The IRS uses this form to calculate your self-employment tax. This includes Social Security and Medicare taxes.
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.
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.)
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.
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.
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.
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.
Key Takeaways
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 One Big Beautiful Bill Act of 2025 repeals the $600 threshold set by the American Rescue Plan Act of 2021, returning the Form 1099-K reporting threshold to $20,000 and 200 transactions.