Every year, the IRS estimates that nearly 10% of people who are required to file a tax return never file one at all. That’s millions of taxpayers. And while the sheer volume means a few people may slip through the cracks, you should never depend on that happening. With today’s advanced technology and data‑matching systems, staying “under the radar” with the IRS is harder than ever.

How Long Can the IRS Pursue You?

There are statutes of limitations—but only for certain things.

Criminal charges:  

• The IRS has six years from the date the return was due to pursue criminal prosecution for failure to file.

Civil penalties and tax collection:  

There is no deadline.  

• Even if the IRS can’t throw you in jail for a return from the year 2000, they can still demand that return forever if you were required to file it.

If You Didn’t Owe Anything

Here’s the good news:

If you don’t owe any tax for the unfiled year, the IRS won’t assess penalties. Both the Failure to File and Failure to Pay penalties are based on the amount of tax owed. If the tax owed is zero, the penalty is zero.

If You Do Owe Taxes

Now cue the horror music.

If you owed taxes for that unfiled year, then:

• Penalties

• Fines

• And interest

…continue to grow indefinitely until the return is filed and the balance is resolved. The IRS meter never stops running.

The silver lining? While the IRS can pursue unfiled returns forever, they typically don’t go digging past six years unless there’s something significant going on. So if you’re beyond that window, don’t panic.

Filing vs. Not Filing: Big Difference

If you choose not to file a return and you owe taxes, that’s considered a crime.

If you do file your return but simply can’t pay, there is no criminal penalty. You may still face interest and penalties, but the IRS is generally willing to set up payment plans.

If you intentionally don’t file and owe taxes, the IRS can fine you up to $25,000 per unfiled year and/or sentence you to one year in prison per year unfiled.

(Realistically, jail is extremely rare—even for people who owe hundreds of thousands.)

Bottom Line

It is always in your best interest to file your tax return—especially if you expect to owe. Not filing only makes things worse in the long run. Being proactive with the IRS will always work out better than being reactive.

Fun fact: Even if you make below the filing threshold, filing a return helps protect your identity. It creates a legitimate record for your Social Security number, making it much harder for someone else to file fraudulently under your name.

If You’re Behind, Don’t Panic—Get Help

If you suspect you’re behind on filing and might owe the IRS, reach out to a tax professional who can help you get back on track safely and correctly.