The clock is ticking for Americans to file tax refunds for 2020 as the May 17 deadline nears.

About 1 million people failed to file, leaving refunds collectively worth more than $1 billion sitting with the Internal Revenue Service.

The median refund for 2020 is $932, with Texas, California, Florida and New York leading the states that have the largest number of taxpayers eligible for the money.

FOX Business, courtesy of the IRS, provides a list of the states with the likely cash refunds.

Estimates of individuals who may be due 2020 income tax refunds, per IRS data:

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FOX Business' Megan Henney contributed to this report.