I received a form from IRS, 1099-int. It's very vague. Just has a payer's fed id number and amount of interest paid or credited. No other info

The form is reporting that you were paid interest by the IRS.  The IRS is the payer of the interest and you received the amount shown that is to be entered in box 1 of the Form 1099-INT.

If the form you received is a Form 1099-INT, that indicates that the issuer of the form paid you interest instead of you paying the interest to an entity.

If the form came from the IRS, it would indicate that they paid you interest income, possibly from a delayed refund.  You will report that interest as income reported on Form 1099-INT box 1, with the payer shown as the IRS.  Use the following steps to get started:

• On the top row of the TurboTax online screen, click on Search (or for CD/downloaded TurboTax locate the search box in the upper right corner) 
• This opens a box where you can type in “interest income” and click the magnifying glass (or for CD/downloaded TurboTax, click Find)
• The search results will give you an option to “Jump to interest income”
• Click on the blue “Jump to interest income” link and enter your information

@tgab7457 

Enter interest from the IRS like a 1099Int and put the amount in box 1.  Enter it manually and just enter IRS for the payer.  Don't enter any other info like the address or a EIN.

Enter a 1099-Int  under

Federal on left

Wages & Income at top

Interest and Dividends

Interest on 1099INT - Click the Start or Revisit button