If you didn't receive your $1,200 stimulus check from the CARES Act, first ensure you qualify based on income and dependency status. If you didn't file a tax return for 2018 or 2019, you can apply for your payment through the IRS website. Verify the IRS has the correct address on file for you. If everything is in order and you still haven't received your check, it may be due to postal delays, so wait a few more weeks.