How the IRS knows you didn't report income (2024)

Unreported income is huge deal to the IRS. The agency recently estimated that the U.S. loses hundreds of billions per year in taxes due to unreported income. Considering the amount of lost revenue, it's not surprising that the IRS has a process for determining unreported income.

When it suspects a taxpayer is failing to report a significant amount of income, it typically conducts a face-to-face examination, also called a field audit. IRS agents look at a taxpayer's specific situation to determine whether all income is being reported.

Here are some clues the IRS uses to determine if a taxpayer isn't being completely forthcoming.

T-account analysis: This is the method the IRS used to convict mob boss Al Capone of tax fraud. In this procedure, the IRS compares sources of cash on the left and cash expenditures on the right, which on paper looks a lot like budgeting. What the auditors are trying to determine is if taxpayers have sufficient funds for their personal living expenses. If not, they'll ask you to explain the imbalance. Perhaps you received other sources of nontaxable cash. The trigger here is that when the imbalance is $10,000 or more, and the agents' questions aren't reasonably answered, the IRS will examine your finances more closely.

Bank deposit analysis: The IRS will request all your bank account deposit activity to determine the sources of these deposits and whether this income was properly reported. It's perfectly legitimate for some deposits from nontaxable sources to go unreported on a tax return, such as life insurance proceeds, gifts and proceeds from loans and inheritances.

Website and e-commerce activity: If you have a business that conducts transactions online, this leaves a trail of clues about your sources of income that the IRS loves to look at. Your businesses website will provide insight as to the products you sell, types of payment accepted and the quarterly and annual amounts of income garnered. Even if you engage in sideline activities not related to your main business, such as online auctions, ride-sharing, advertising sales and so on, you need to report income from these activities.

Information statement matching: The IRS receives copies of income-reporting statements (such as forms 1099, W-2, K-1, etc.) sent to you. It then uses automated computer programs to match this information to your individual tax return to ensure the income reported on these statements is reported on your tax return.

Business financial ratios: If you're self-employed or own a small business, you're in it to make a profit, and profits usually result in taxable income. So, IRS agents like to compare financial ratios such as gross income and profit ratios for your business to those ratios as reported by similar business on sites such as BizStats.com. This site contains gross profit and net profit ratios, as well as ratios for expenses to sales. If your business generates lots of gross income but little or no profit and takes large deductions for travel and other expenses, expect plenty of questions from the IRS.

Ray Martin

How the IRS knows you didn't report income (2)

View all articles by Ray Martin on CBS MoneyWatch»
Ray Martin has been a practicing financial advisor since 1986, providing financial guidance and advice to individuals. He has appeared regularly as a contributor on the CBS Early Show, CBS NewsPath, as a columnist on CBS Moneywatch.com and on NBC-TV's morning newscast TODAY. He has also appeared on the Oprah Winfrey Show and is the author of two books.

How the IRS knows you didn't report income (2024)

FAQs

How the IRS knows you didn't report income? ›

When it suspects a taxpayer is failing to report a significant amount of income, it typically conducts a face-to-face examination, also called a field audit. IRS agents look at a taxpayer's specific situation to determine whether all income is being reported.

How does the IRS find out about unreported income? ›

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.

What happens if you accidentally underreported income? ›

If the IRS determines that you underreported your income, there are two types of tax penalties that can apply. One is the negligence penalty. The other is the penalty for substantial understatement of your tax liability. “Substantial” understatement is defined as understating your tax liability by at least 10 percent.

How does the IRS find out about under the table income? ›

How does the IRS uncover underreported income? Third-Party Reporting: This is perhaps the most common way the IRS discovers underreported income. Various third parties, such as employers, cash apps, and financial institutions, are required by law to report certain types of income to the IRS using forms like 1099s, W2s.

How does the IRS verify your income? ›

The IRS uses several different 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.

Does the IRS always catch unreported income? ›

More likely than not they will get to you. When you don't file taxes, IRS can come to you for back taxes anytime as there is NO statue of limitation for NOT filing. It is good to file to avoid the hassle of interest and penalties that will accrue for NOT filing on the tax liability.

Does IRS catch all mistakes? ›

The IRS does not check every tax return; in fact, it does not check the majority of them; however, the IRS implements methods that track certain factors that would result in a further examination or audit by them.

How much income goes unreported? ›

The gross tax gap nonfiling, underreporting, and underpayment component projections for Tax Years 2017-2019 timeframe are $41 billion, $433 billion, and $66 billion respectively. Given the complexity of the tax system and available data, no single approach can be used for estimating each component of the tax gap.

Does the IRS check your bank account? ›

Generally, the IRS won't go rifling through your bank account transactions unless they have a good reason to. Some situations that could trigger deeper scrutiny include: An audit – If you're being audited, especially for issues like unreported income, the IRS may request bank records.

Who gets audited by IRS the most? ›

But higher-income earners can face increased scrutiny. The odds rise for those reporting income over $200,000 and, according to research from Syracuse University published in January, millionaires are the most likely to be audited out of any income bracket.

How do tax evaders get caught? ›

Various investigative techniques are used to obtain evidence, including interviews of third party witnesses, conducting surveillance, executing search warrants, forensically examining evidence, subpoenaing bank records, and reviewing financial data.

What triggers IRS audit? ›

Unreported income

The IRS receives copies of your W-2s and 1099s, and their systems automatically compare this data to the amounts you report on your tax return. A discrepancy, such as a 1099 that isn't reported on your return, could trigger further review.

How long does the IRS take to verify income? ›

The review process could take anywhere from 45 to 180 days, as the IRS could be reviewing various issues such as wages and withholding, or credits or expenses shown on your tax return. Once the IRS finishes its review, it may send your refund, ask for additional information, or deny all or part of your refund.

Can you get audited after your return is accepted? ›

Key Takeaways. Your tax returns can be audited even after you've been issued a refund. Only a small percentage of U.S. taxpayers' returns are audited each year. The IRS can audit returns for up to three prior tax years and, in some cases, go back even further.

What are the consequences of underreporting? ›

The consequences of underreporting can be far-reaching and detrimental to individuals and society as a whole. Without accurate reporting, it becomes challenging to allocate resources, implement targeted interventions, or address systemic issues.

What are the IRS penalties for unreported income? ›

Penalties include $10,000 for failure to file each return, with an additional $10,000 added for each month the failure continues beginning 90 days after the taxpayer is notified of the delinquency, up to a maximum of $50,000 per return, and ten percent of the value of any transferred property that is not reported, ...

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