Yes, you can report someone to the IRS for not reporting rental income by submitting Form 3949-A, Information Referral. Reports can be made online or by mail, and you may remain anonymous. Providing specific details like the landlord's name, address, and estimated unreported income increases the likelihood of an investigation.
Failure to Report
Money earned from real estate rental is taxable income, less any allowable deductions. Failing to report it on a tax return can accrue the same types of penalties and late-payment interest as any other underreported income. The penalties that a taxpayer-landlord accrues depend on their situation.
Ways the IRS can find out about rental income include routing tax audits, real estate paperwork and public records, and information from a whistleblower.
For information on how to report suspected tax fraud activity, if you have information about an individual or company you suspect is not complying with the tax law, and you do not want to seek an award. You can remain anonymous.
In general, you are required to report all income on the return for the year you actually receive it, even though it may be credited to your tenant for a different year. If you receive rent for January 2026 in December 2025, for example, report the rent as income on your 2025 tax return.
The IRS considers rental income to be taxable unless there is a specific exception. One exception is if you rent your property for personal use, meaning that you or your family members use it for more than 14 days or 10% of the total days rented, whichever is greater.
Rental property / personal use
You're considered to use a dwelling unit as a residence if you use it for personal purposes during the tax year for a number of days that's more than the greater of: 14 days, or. 10% of the total days you rent it to others at a fair rental price.
Someone you report to the IRS might find out, especially if the information leads to a significant investigation or award, but the IRS has strong confidentiality laws and will protect your identity to the fullest extent possible, particularly if you provide an award-eligible tip; for anonymous tips, they won't know it came from you, but you won't get a reward. Your identity is generally protected, but IRS investigations can reveal details, and if you claim an award (Form 211), your identity becomes known to the IRS.
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.
Special Agents have no such pressure.
With a 90% conviction rate to protect, they dont bring cases they might lose. They take as long as necessary to make sure theyll win. That “luxury of time” is paid for with your anxiety. The typical IRS criminal investigation takes 12 to 24 months to complete.
You generally must include in your gross income all amounts you receive as rent. Rental income is any payment you receive for the use or occupation of property. Expenses of renting property can be deducted from your gross rental income. You generally deduct your rental expenses in the year you pay them.
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.
The IRS closely monitors rental properties because they are often vulnerable to inaccuracies and deliberate misreporting. One of the most common triggers for an IRS audit is underreporting rental income or claiming excessive deductions. Common audit triggers include: Incorrectly claiming expenses.
In the most serious cases of IRS audit unreported income, the government may pursue criminal charges. This is rare, but when it happens, the conviction rate is high. Criminal charges require proof of “willful” violation of a known legal duty.
Reporting cash payments
A person must file Form 8300 if they receive cash of more than $10,000 from the same payer or agent: In one lump sum. In two or more related payments within 24 hours. For example, a 24-hour period is 11 a.m. Tuesday to 11 a.m. Wednesday.
Name, address and taxpayer identification number (if known) of the person or entity you're reporting. Description of the alleged noncompliance. This should include specific and credible allegations where the person or entity failed to comply with laws the IRS is authorized to administer, enforce or investigate.
Section 7206 establishes, among other crimes, the federal tax crime of making false or fraudulent statements to the IRS, and aiding or assisting a taxpayer in making such statements. Common violations of section 7206 include falsely inflating deductions or underreporting income.
There are several ways to report fraud and scams, including anonymously. You can also submit a whistleblower claim for award. The IRS Whistleblower Office provides monetary awards for information that leads to proceeds collected.
Here's a closer look at the penalties you could face for not reporting rental income: Civil fraud penalties: If you knowingly owe taxes but fail to report them, the IRS considers it fraud. You could face a penalty of 75% of the amount owed.