What if I didn't receive a Form 1099-INT, or I lost my Form 1099-INT?
If you know the amount of interest income you received:
If you're filing a joint return with your spouse, choose the person who received the interest income as the owner of 1099-INT form even though you didn't receive the form. If you're not filing a joint return, we'll automatically assign the interest income to you.
Enter the name of the bank or other institution that paid the interest income as the Payer Name.
Enter the amount of interest income that you received in 2018.
Many times, year-end statements or other documents besides the 1099-INT Form
will show the amount of interest income you received for the year. You can call your bank or broker to find out the taxable amount of interest income you had for the year.