For most Americans who are eligible to receive the latest round of coronavirus stimulus checks, they likely already have those funds in their bank accounts.

But know that there have been concerning reports that are indicating that some U.S. payers still haven’t seen the checks that are rightfully theirs.

For those individuals who are part of this unenviable group, there are indeed ways to still try to claim that cash.

Some people have reportedly received a confirmation letter—shown as Notice 1444 or Notice 1444-B—from the IRS stating that their payment was issued even though they have yet to receive it.

In this particular situation, the affected individuals have the option to request an IRS payment trace, which has become the go-to method for many people who have grown frustrated over their lost or missing stimulus checks.

This handy tool can also be tapped into if the IRS “Get My Payment” portal at www.irs.gov/coronavirus/get-my-payment shows that the stimulus funds have been transferred but nothing has changed in the recipient’s bank account.

To request a payment trace, make sure to first call the IRS at 800-919-9835 or mail or fax a completed Form 3911, “Taxpayer Statement Regarding Refund.”

Be sure to set aside some time to complete this process because some people have been left on hold for minutes to up to an hour. If the trace request was done via phone, then know that one does not have to fill out Form 3911.

On the Form 3911, first write “EIP3” on the top of the form, then fill out the form answering all of the refund questions as they relate to the missing or lost stimulus check. When one reaches item seven under section one, check the box for “Individual” as the type of return. For “Date Filed,” leave that blank and then sign the form. Keep in mind that for those who are married and filing together, both spouses must sign the form.

Also, be aware that a Recovery Rebate Credit has been added to all returns this tax season, so that people can eventually receive their overdue payments. “If you didn’t get any payments or got less than the full amounts, you may qualify for the Recovery Rebate Credit and must file a 2020 tax return to claim the credit even if you don’t normally file,” the IRS website writes.

Another solid option is to track USPS mail delivery, for which people can sign up here. Informed Delivery enables them on a daily basis to digitally preview and manage USPS deliveries, such as stimulus checks and debit cards—all at no charge.

“Informed Delivery provides eligible residential consumers with a digital preview of their household’s incoming mail scheduled to arrive soon,” the USPS website says. “Users can view greyscale images of the exterior, address side of incoming letter-sized mailpieces (not the inside contents) via email or an online dashboard.”

It can, however, take up to three days to activate Informed Delivery on an account.

Ethen Kim Lieser is a Minneapolis-based Science and Tech Editor who has held posts at Google, The Korea Herald, Lincoln Journal Star, AsianWeek, and Arirang TV. Follow or contact him on LinkedIn.