https://www.irs.gov/newsroom/economic-impact-payments-on-their-way-visit-irsgov-instead-of-calling
The direct deposit payments may take several days to post to individual accounts. Some Americans may have seen the direct deposit payments as pending or as provisional payments in their accounts before the scheduled payment date of January 4, 2021, which is the official date funds are available.
Paper checks also began going out and will continue to be sent through January. Some people will be mailed debit cards in January, and the IRS urges people to carefully check their mail. Mailed payments will require more processing and mailing time. Those who reside abroad will have longer wait times for checks as disruptions to air travel and mail delivery in some countries will slow delivery.
