Why filing season creates a narrow but reliable window for fraud, and what actually happens once a Social Security number is stolen
Tax season already puts a lot on most people’s plates, and unfortunately, that same pressure creates opportunity for criminals. Tax identity theft happens when someone uses another person’s personal information, most often a Social Security number, to interfere with their IRS records or file a fraudulent tax return in their name. For many taxpayers, the first real sign of trouble isn’t a warning at all. It’s a rejected return, a delayed refund, or an unexpected notice from the IRS.
This risk has grown as more tax activity has moved online. Tax fraud and scams tend to spike during filing season specifically, when criminals know people are actively sharing sensitive information, watching closely for refunds, and responding quickly to emails or texts that look official. In 2024 alone, consumers reported more than $12.5 billion in fraud losses, underscoring just how widespread and costly these schemes have become across the board, not only within the tax system itself.
At Tax Guardian, the focus is on this specific blind spot in identity protection: monitoring IRS activity tied directly to a taxpayer’s identity. By watching for unusual filings, account changes, or refund activity, we help taxpayers spot problems earlier, often well before they turn into months-long delays or complicated disputes with the IRS.
What Tax Identity Theft Actually Is
Tax identity theft occurs when someone uses another person’s personal information, most commonly a Social Security number or an employer identification number, to commit fraud within the tax system. In most cases, the goal is straightforward: file a false return as early as possible and claim a refund before the real taxpayer has the chance to file their own.
Unlike credit card fraud, tax identity theft usually doesn’t show up on a credit report right away. It happens entirely inside IRS systems, which means many victims only discover the problem once something has already gone wrong with their own filing. A rejected e-file, a missing refund, or an unexpected IRS notice can all serve as the first real warning sign.
According to IRS data, more than one million tax returns are flagged each year for possible identity theft. For victims, the consequences tend to be frustrating and genuinely time-consuming: delayed refunds, additional paperwork, and months of back and forth with the IRS simply to prove who they actually are.
How Tax Identity Theft Actually Happens
Tax related fraud typically begins long before filing season itself. Criminals need personal information first, and there are several common ways they obtain it.
Stolen personal data remains one of the largest sources. Data breaches affecting employers, healthcare providers, financial institutions, and government agencies continue to expose names, Social Security numbers, and addresses on a large scale. Even breaches that seem completely unrelated to taxes can supply exactly the information later used to commit tax fraud.
Phishing, smishing, and fake IRS contact make up another major category. Many of these scams rely entirely on impersonation, with criminals posing as the IRS or a tax software company through email, text message, phone call, or even social media posts. These messages typically create urgency by claiming a refund problem, an account suspension, or a missed payment, all designed to pressure someone into clicking a link or sharing sensitive information before they’ve had time to think it through. The IRS has repeatedly warned that it does not initiate contact with taxpayers by email, text, or social media to request personal or financial details, yet these scams continue to increase every filing season regardless.
Early filing fraud is where stolen information usually gets put to use. Once criminals have enough information, they typically file a fraudulent return early in the season, sometimes weeks ahead of when most legitimate taxpayers file. When the real taxpayer later submits their own return, the IRS system flags it as a duplicate, and the burden of proof shifts entirely onto them.
Employment related tax fraud is a less visible variation. In some cases, a stolen identity gets used for employment purposes rather than a direct refund claim, and wages earned by someone else end up reported under the victim’s Social Security number. The IRS may later question why income the taxpayer doesn’t recognize is appearing on their own tax record.
Warning Signs the IRS Flags
Tax identity theft often comes to light through IRS communications or filing problems rather than any proactive alert. The signals worth watching for include an e-filed return rejected because a return has already been filed under the same Social Security number, an IRS notice referencing a suspicious or unverified return, an unrequested tax transcript arriving unexpectedly, IRS records showing income from an employer the taxpayer has never worked for, notification that an IRS online account was created or accessed without authorization, or being assigned an EIN that was never requested in the first place.
These issues frequently lead to refund delays and the kind of “Where’s My Refund?” frustration that can take months to fully resolve. The IRS maintains a central resource for prevention and response on its own website for taxpayers looking for official guidance beyond these warning signs.
Is Tax Identity Theft a Felony?
A common question worth answering directly: in most cases, yes. Filing fraudulent tax returns and stealing refunds are federal crimes that can result in significant fines and prison time for the person committing them.
The related question of whether identity fraud itself is a felony follows the same logic. When identity theft is used specifically to commit tax fraud, it typically qualifies as a felony offense under federal law. It’s worth being clear on one point here: victims are never held responsible for crimes committed using their stolen information. They are, however, responsible for reporting the issue promptly and working with the IRS through the resolution process that follows.
How to Report Tax Fraud and Identity Theft
Knowing how to report tax fraud quickly can meaningfully reduce delays and limit further damage. The IRS recommends filing a tax return regardless of suspected fraud, even if that means filing by paper because e-filing has been blocked as a result of the fraudulent activity. Alongside that, submitting IRS Form 14039, the Identity Theft Affidavit, alerts the IRS directly to the issue, though businesses affected by similar fraud typically need Form 14039-B instead.
From there, responding promptly to any IRS notices and completing identity verification requests as they arrive keeps the resolution process moving rather than stalling it further. Reporting the identity theft separately to the FTC at IdentityTheft.gov documents the issue formally and provides access to additional recovery tools. Finally, monitoring credit reports and placing fraud alerts where appropriate adds a layer of protection beyond the IRS process itself. The Federal Trade Commission also hosts Identity Theft Awareness Week and publishes ongoing consumer alerts to help taxpayers stay current on emerging threats.
IRS Warnings During Tax Season
Each year, the IRS increases its public warnings as filing season approaches. During National Tax Security Awareness Week in December, the IRS and its Security Summit partners specifically highlight rising threats, including social media tax scams and misinformation, phishing and smishing campaigns impersonating the IRS, scams disproportionately targeting seniors and retirees, and cyberattacks aimed at small businesses and tax professionals. The IRS Newsroom publishes regular updates on these trends, and reviewing them periodically is one of the simpler ways taxpayers can stay ahead of what’s actively circulating each season.
Practical Ways to Reduce Your Risk
No system catches everything, but taxpayers can meaningfully reduce their own exposure with a handful of consistent habits. Filing a return as early as possible remains one of the most effective single steps available, since it closes off the exact window early filing fraud depends on. Using multi-factor authentication on tax and financial accounts adds a real barrier against unauthorized access. Requesting an IRS Identity Protection PIN blocks fraudulent returns from being processed even when other personal information has already been exposed. Staying cautious with emails, texts, and social media messages that request sensitive information reduces the odds of falling for impersonation attempts. And securing devices, passwords, and sensitive documents closes off some of the more basic ways personal information gets exposed in the first place.
Early awareness and ongoing monitoring matter enormously here. Because tax identity theft happens entirely inside IRS systems, problems are almost always easier to address when they’re caught sooner rather than discovered only after refunds are delayed or accounts are locked.
The Bottom Line
Tax identity theft isn’t always loud or obvious while it’s happening, but it can carry lasting consequences when it goes undetected for too long. From delayed refunds to unexpected IRS notices, the impact tends to surface exactly when taxpayers are already under deadline pressure and least equipped to deal with it calmly. And as each filing season approaches, tax fraud and scams tend to become more frequent, more convincing, and harder to spot on sight.
At Tax Guardian, the goal is to help taxpayers stay informed about what’s actually happening inside their own IRS records, which is where tax identity theft genuinely occurs. With daily IRS transcript monitoring and clear alerts, unusual activity becomes visible early, well before small issues have the chance to turn into much bigger ones.
Frequently Asked Questions
What is tax identity theft?
Tax identity theft occurs when someone uses another person’s Social Security number or employer identification number to commit fraud within the tax system, most commonly by filing a false return early in the season to claim a refund.
How do criminals typically obtain the information used for tax identity theft?
Common sources include data breaches affecting employers, healthcare providers, and financial institutions, along with phishing and smishing scams that impersonate the IRS or tax software companies to trick people into sharing sensitive information directly.
What are the warning signs of tax identity theft?
Common signals include an e-filed return rejected as a duplicate, an IRS notice about a suspicious return, an unrequested tax transcript, unfamiliar income appearing on IRS records, or notification of an IRS online account created without authorization.
Is tax identity theft a felony?
In most cases, yes. Filing fraudulent tax returns and stealing refunds are federal crimes that can result in significant fines and prison time for the person who committed the fraud.
Am I responsible for fraud committed using my stolen identity?
No. Victims are not held responsible for crimes committed using their information. They are, however, responsible for reporting the issue promptly and working with the IRS through the resolution process.
How do I report tax identity theft?
File a tax return even if fraud is suspected, submitting by paper if e-filing is blocked. Submit IRS Form 14039, the Identity Theft Affidavit, respond promptly to any IRS notices, and report the incident separately to the FTC at IdentityTheft.gov.
How many tax returns does the IRS flag for possible identity theft each year?
According to IRS data, more than one million tax returns are flagged each year for possible identity theft, reflecting how widespread the problem has become across the filing system.
What is employment related tax fraud?
This occurs when a stolen identity is used for employment purposes rather than a direct refund claim, resulting in wages earned by someone else being reported under the victim’s Social Security number.
What steps reduce the risk of becoming a victim of tax identity theft?
Filing early, using multi-factor authentication on tax and financial accounts, requesting an IRS Identity Protection PIN, staying cautious with unsolicited messages, and securing devices and sensitive documents all meaningfully reduce exposure.
Does the IRS contact taxpayers by email or social media?
No. The IRS has repeatedly stated that it does not initiate contact with taxpayers by email, text, or social media to request personal or financial information, which makes any message claiming otherwise a significant warning sign.
