India, April 16 -- With about an hour left to the IRS tax filing deadline, several social media users reported seeing a 'payment plan submission error' on Tuesday. The glitch could be caused by an outage on the IRS Online Payment Agreement (OPA) tool during high-traffic periods like tax season. Errors like "We are unable to process your request" or "Payment plan submission error" can indicate a temporary system issue.

The IRS is yet to respond to the issue.

"Tax filing deadline with an hour and 15 remaining... And you guessed it.. The IRS's system is experiencing an outage," one person reported on X, platform formerly known as Twitter.

"Is there an issue with the IRS payment plan site? I've tried several times to set up a payment plan ...