No, filing a tax extension does not increase your risk of an IRS audit; in fact, it can actually decrease it by giving you more time to file a complete, accurate return, which reduces common errors that trigger audits, and some tax pros suggest audit quotas are often met by the original deadline. The IRS uses a system (DIF) to select returns, and extensions aren't a factor in that, with the key to avoiding penalties being to pay your estimated taxes by the original deadline.
While many believe that filing an extension increases your chance of an audit, the opposite is actually true.
And remember: tax filing extensions do NOT increase your audit risk. As long as you pay any taxes owed by the original deadline and file your return by the extended deadline, you're in good shape.
An extension gives you extra time to file, but not extra time to pay. After you file an extension, if you owe taxes when you file your return, you might also have to pay penalties and interest on the tax due.
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.
In this rush, the option to file for a tax extension is often seen as a last resort, the taxpayer has a lingering concern that it might raise red flags with the IRS or cause future tax problems. However, these worries are largely unfounded.
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.
If you file taxes after the October 15 extension deadline, the IRS will assess penalties and interest, primarily a failure-to-file penalty (5% per month, max 25%), plus a separate failure-to-pay penalty (0.5% per month) and daily interest on the unpaid taxes, though you can request penalty abatement for reasonable cause like natural disasters. The October deadline is for filing, not paying; if you owe, payment was due in April, so you'll likely face both penalties and interest until you file and pay, but you won't be penalized if you're due a refund.
Top IRS audit triggers
The CBDT's extension of the tax audit due date to October 31, 2025, provides a welcome relief for taxpayers and professionals. However, it is essential to utilise this additional time effectively to avoid penalties under Section 271B.
1. Missing Important Tax Documents. Filing too early can lead to mistakes if you don't have all the necessary tax documents, such as W-2s, 1099s, or deductions-related paperwork. Filing before receiving all necessary forms could result in an amended return later.
Most taxpayers will do anything they can to avoid tax audits. Filling out an accurate tax return is the best way to avoid an audit. Additionally, you should ensure you double-check your math and only claim legitimate tax deductions. E-filing may also be helpful.
As uncommon as they may be, most people still fear that an audit means they're in trouble. Just because you are facing an income tax audit, though, it does not necessarily mean you did anything wrong. For peace of mind and legal guidance, reach out to an tax lawyer in your area.
Your tax preparer can file for your extension. While there is usually a fee associated with this, you can let your accountant do the majority of the work for you. Use IRS Free File to electronically request an automatic tax-filing extension.
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.
Even if filed on time, some tax extension requests are rejected on or after the deadline. You'll get a notice from the IRS if your extension request is denied.
If you need more time to file your taxes, request an extension by the April tax filing due date. This gives you until October 15 to file without penalties.
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.
Remember, you will be contacted initially by mail. The IRS will provide all contact information and instructions in the letter you receive. If we conduct your audit by mail, our letter will request additional information about certain items shown on the tax return such as income, expenses, and itemized deductions.