Where could I find the Tax Identification Number for my bank? I earned $1.43 in interest and need to report it on Form 1099-INT.

Did you get a 1099-INT from your bank?  If so, you can find it here:  

Since you received  less than $10 in interest from your financial institution, they're not required to send you Form 1099-INT, but you're still supposed to report the interest.

1. Open your return (or continue if it's not already open).
2. Select Search In the upper right menu,
3. Enter 1099-INT ,
4. Select the Jump to 1099-INT,
5. Answer Yes to Did you receive any interest income?
   • If you see Review your 1099-INT info, select Add another 1099-INT or select Review next to the correct 1099-INT.
6. On the following screen, select I'll type it in myself or Continue.
7. On the next screen, input the required information.
8. Select Continue.