The IRS has started paying interest on Refunds. Apparently even before you get the Refund. See IRS notice posted August 18, 2020
https://www.irs.gov/newsroom/13-point-9-million-americans-to-receive-irs-tax-refund-interest-taxable...
Write a big note to yourself in your tax papers for it so you remember to enter the interest into your return next year as it will be taxable interest income.
