Where’s My Refund? is available almost all of the time. However, IRS systems may not be available every Monday, early, from 12:00 am (Midnight) to 3:00 am Eastern Time.
IRS Change of Address and Refund Trace features are not available during the following times (Eastern Time):
Sunday: 12:00 am (Midnight) to 7:00 pm
Monday: 12:00 am (Midnight) to 6:00 am
Tuesday: 3:30 am to 6:00 am
Wednesday: 3:30 am to 6:00 am
Thursday: 3:30 am to 6:00 am
Friday: 3:30 am to 6:00 am
Saturday: 3:30 am to 6:00 am and 9:00 pm to Midnight
Also, occasionally IRS systems may be unavailable on Sundays between 1:00 am and 7:00 am Eastern Time.
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