Once Form 3911 is submitted, the IRS will investigate and begin the refund replacement process. If the check was not cashed, the IRS will cancel the original and issue a new one.

Here’s What You Need to Remember: To request a trace, first call the IRS at 800-919-9835 or mail or fax a completed Form 3911, “Taxpayer Statement Regarding Refund.” ...

Still missing your $1,400 stimulus check? Find out how to claim the Recovery Rebate Credit and file a 2021 tax return by April 15, 2025.