Taxpayers who receive an Economic Impact Payment should keep Notice 1444, Your Economic Impact Payment, with their tax records. This notice provides information about the amount of their payment, how the payment was made and how to report any payment that wasn’t received. For security reasons, the IRS mails this notice to the last known address within 15 days after the payment goes out. It’s especially important for people to keep this notice if they think their payment amount is wrong. When tapayers file their 2020 tax return, they can refer to Notice 1444 and claim additional credits, if they are eligible.