The IRS has announced that it is sending automatic payments of up to $1,400 to about 1 million taxpayers for one key reason.

The IRS is sending about 1 million eligible American taxpayers a payment this month for the pandemic-era Recovery Rebate Credit that they didn't claim on their 2021 tax returns.

In the coming weeks, the Internal Revenue Service is set to send approximately 1 million taxpayers $1,400 stimulus checks, according to officials.

The Internal Revenue Service, IRS, will mail checks worth up to $1,400 to taxpayers who did not claim their stimulus checks during the COVID-19 pandemic. Around one million U.S. taxpayers who were eligible for the check can expect a lump sum mailed to them during tax season.