Where's My Refund? is updated no more than once every 24 hours, usually overnight.
When to check status of your refund:
When the IRS processes your tax return and approves your refund, you can see your actual personalized refund date. Even though the IRS issues most refunds in less than 21 days after we receive your tax return, it’s possible your tax return may require additional review and take longer.
You should only call if it has been: