It remains to be seen whether there will be some sort of grace period for those who miss the deadline as a result of the IRS's own digital problem.
The mission is to help low-income people file their taxes no matter how complicated their situation.
Taxpayers don't have to complete any special steps to receive the extra time. As such, it's no surprise the IRS payments system fails on the one day it's most needed.
"The IRS is highly vulnerable to IT breakdowns and cyberattacks, " said Pete Sepp of the National Taxpayers Union, a nonpartisan group that has pushed for changes to the IRS.
The IRS has not issued a statement about the outage but did tweet out that you can file for a six-month extension if your taxes aren't finished. TAX DAY TIPS: How to file an extension and moreH&R Block said it's handling its clients' returns differently.
The IRS is supposed to have sophisticated computer systems that can process millions of last-minute filers. The IRS is looking into the issue and will provide updates as soon as possible.
The online payment systems have all been restored.
If you were waiting until the last minute to pay your taxes and were depending on IRS.gov to make a payment from your checking account, there's some bad news. And it appears that the efiling system is also at least partially down.
On Tuesday, the IRS alerted consumers to a new email tax scam.
This service is temporarily unavailable.
"If we can't solve it today, we'll figure out a solution", Kautter said. Clicking on "Make a payment" on the payments page redirects users to a page titled "unplannedOutagePage".
On the other hand, if you owe them money, it's important to file for the automatic extension. The system was back online by late Tuesday.