India, July 9 -- Tens of millions of Americans may still be able to claim a COVID-era tax refund, but they must act before the July 10 deadline. The refund is linked to IRS penalties, late fees and interest charged during the COVID-19 emergency period. The IRS has now made it easier to file claims by launching an online filing option for eligible people.

Earlier, taxpayers had to send Form 843 by mail or file it through a tax professional. On July 1, the IRS quietly added an electronic filing option for Form 843, but only for COVID-related refund claims. The online filing option is available through the IRS' "Mobile-friendly forms" webpage for eligible individual taxpayers with an IRS Online Account. Businesses and people who do not want...