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Americans who filed their 2019 federal income tax returns on time should expect a refund this week. The Internal Revenue Service and the Treasury Department will send interest payments with an average of $18 to about 13.9 million taxpayers, according to a statement by the IRS.

The interest payments will be deposited to taxpayers who filed their tax return by this year's July 15 deadline and either received a refund in the past three months or will receive a refund. Most interest payments will be issued separately from tax refunds, according to the statement.

More than 12 million taxpayers who received their refund by direct deposit will see their interest payment direct deposited in the same account. ...