Yes, significant, unexplained, or abrupt changes in income from one tax year to the next are considered a major red flag for the IRS. These fluctuations—whether a sharp increase or decrease—often signal potential issues like underreported income, unreported freelance earnings, or errors, triggering automated screening programs.
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.
Don't underestimate the benefits of filing an amended return, either. By making sure your tax return is accurate, you can maximize your refund or lower what you owe. You'll also reduce the risk of receiving a notice or IRS audit in the future.
2. Making a lot of money. While the overall individual audit rates are extremely low, the odds increase significantly as your income goes up (especially if you have business income). According to IRS audit statistics, about 0.4% of total individual returns get audited by the IRS.
Effective 2025 through 2028, individuals age 65 and older may claim an additional $6,000 deduction. This is in addition to the standard deduction for seniors available under existing law. Applies per eligible individual (or $12,000 for a married couple if both spouses qualify).
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.
Does the IRS Check Every Tax Return? The IRS does not check every tax return. It does not check the majority of them, but the IRS implements methods that track certain factors that would result in a further examination or audit by them.
Failing to Report All Taxable Income
A mismatch sends up a red flag and causes the IRS computers to spit out a bill. If you receive a 1099 showing income that isn't yours or listing incorrect income, get the issuer to file a correct form with the IRS.
Here's a list of seven symptoms that call for attention.
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.
Who must file. Generally, any person in a trade or business who receives more than $10,000 in cash in a single transaction or in related transactions must file a Form 8300.
The IRS will never initiate contact demanding immediate payment via gift cards, prepaid debit, or wire transfers; threaten immediate arrest or deportation; or contact you first by email, text, or social media; these tactics, especially involving urgent demands for specific payment types or threats, are key signs of a tax scam, as the IRS always mails a bill first and allows time to appeal.
Attorneys, certified public accountants, enrolled agents or anyone who gets paid to prepare tax returns may owe a penalty if they don't follow tax laws, rules and regulations.
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.
Should your account be selected for audit, we will notify you by mail. We won't initiate an audit by telephone. Assistance is available to help you understand the letter/notice received: Understanding your IRS notice or letter.
Lawmakers have passed legislation called the “One Big Beautiful Bill Act” to make the expiring tax cuts permanent, provide additional tax cuts and changes to the tax code, and reduce spending. President Trump signed the bill into law on July 4, 2025.
Tax Foundation estimates the OBBBA reduced individual taxes by $129 billion for 2025, and outside estimates suggest up to $100 billion of that could be received as higher refunds this filing season, pushing average refunds up by up to $1,000.
Some of the major tax changes effective from April 1, 2025, are revised tax slabs, rebate of up to Rs. 60,000, revised ITRU deadlines, calculation of partner's remuneration allowable as a deduction and revised TDS/TCS threshold limits. What is the Rebate available under section 87A?