What Is the Penalty for Filing Taxes Late?

Failure-to-file penalty

The failure-to-file penalty is the most costly consequence of missing the tax deadline. “If you’re behind on your IRS obligations, the priority should be to file the return, even if you can’t pay your tax bill,” said Tom Taulli, an enrolled agent and founder of Blue Sky Tax Prep in Pasadena, California.

The failure-to-file penalty only applies if you owe taxes. If you're expecting a refund, filing late won't cost you anything. But you only have three years from the original deadline to claim that money before it becomes property of the U.S. Treasury.

The IRS charges 5% of your unpaid tax balance for each month or partial month your return is late, and the clock starts ticking the day after the deadline. This means being even one day late triggers a full month's penalty. The charge maxes out at 25% of your unpaid balance after five months, though interest and other penalties continue accumulating beyond that point.

Returns filed more than 60 days late face a minimum penalty that can hit hard. "The minimum penalty is either $525 or 100% of the unpaid tax, whichever is less," explained Taulli. "In other words, you could be on the hook for a large penalty even if the unpaid tax is relatively low."

Failure-to-pay penalty

The payment penalty is much smaller than what you'd face for filing late: 0.5% of the unpaid tax balance per month or a part of the month after the due date. According to Taulli, this accrues until the tax is paid in full or until it reaches 25% of the unpaid tax.

When both penalties hit you in the same month, the IRS prevents double-charging by reducing the filing penalty to 4.5% while the payment penalty covers the remaining 0.5%. So you still pay 5% total, just split between the two.

Interest charges add another layer of cost beyond the penalties. The IRS sets the rate quarterly based on federal rates, and it compounds daily on both your unpaid taxes and any penalties already assessed. Currently at 7% annually, that daily compounding makes waiting to resolve your tax debt expensive.

If you can't pay your full tax bill, set up a payment arrangement with the IRS to stop penalties from accumulating. Payment plans let you pay off your balance in monthly installments, but interest will keep accruing on the remaining balance.

» EXPLORE: Pros and cons of IRS payment plans

Penalty relief options

The IRS gives you two ways to reduce or wipe out penalties when you have a legitimate reason for missing deadlines: First-Time Penalty Abatement and reasonable cause.

First-time penalty abatement

First-time penalty abatement works like a one-time tax forgiveness. You can use it if you've filed everything correctly, paid what you owed or arranged a payment plan and stayed penalty-free for the past three years.

“There’s no need to show hardship,” said Taulli. It covers both failure-to-file and failure-to-pay penalties, making it the simplest way to clear charges from your record.

Reasonable cause

Reasonable cause requires proving that your failure happened due to circumstances outside your control. It might include:

• Serious health issues
• Natural disasters
• Death of an immediate family member
• Difficulties accessing necessary records

But “reliance on a faulty tax professional seldom qualifies,” noted Joshua Katz, a certified public accountant and founder of Universal Tax Professionals.

Whichever path you choose, you'll need to formally request relief by calling the IRS or submitting a written request with supporting documentation. Understanding what qualifies as tax relief helps you build a stronger case when you make your request.

Filing extensions and their impact

Filing Form 4868 on or before April 15 gives you an automatic six-month extension to submit your tax return, pushing your deadline to October 15. The process requires no explanation or IRS approval.

This extension protects you from the costly 5% monthly failure-to-file penalty as long as you submit your return by October 15. However, it doesn't eliminate payment penalties. “Even with the extension, your tax payment is still due in April,” Katz stressed. If you don't pay at least 90% of what you owe by the original deadline, you'll face the 0.5% monthly failure-to-pay penalty starting April 16.

Interest also starts accumulating on any unpaid balance from April 16 forward, regardless of your extension. That’s why it’s smart to estimate what you owe in back taxes and pay as much as possible by the original deadline, even if you're not ready to file yet.

» DISCOVER: How to get help with back taxes

Consequences of not filing

Not filing your tax return at all triggers consequences far worse than filing late. Taulli pointed out that the IRS eventually takes action, even if it takes months or years.

You can expect to experience some or all of these consequences for not filing.

• Tax collection: The IRS will file a Substitute for Return (SFR) using income information from your employers and banks without any deductions or credits, so you'll owe far more than if you'd filed yourself.
• Collection efforts: The IRS charges the maximum 25% penalty and starts collection efforts. Tax liens on your property can ruin your credit score, making it tough to get approved for loans or mortgages. Levies go further by seizing money directly from your wages, bank accounts and future tax refunds.
• Passport blocked: Substantial unpaid tax debt can lead to passport issues. The State Department may revoke or refuse to renew yours until you settle the balance.

If the IRS owes you a refund, you forfeit that money if you don't file within three years. But the longer you wait, the more serious the consequences get. Criminal tax evasion charges are also possible but rare. They typically involve deliberate fraud rather than someone who simply didn't file.

Consider using tax software services to help you file your taxes on time and avoid penalties.