I JUST INPUTTED A FORM 1099-INT. BOX 15 REQUIRES AN "STATE." MY BOX 15 IS BLANK. IT APPEARS THAT TURBO TAX REQUIRES A STATE. THE STATE IS WA & NOT AVAILABLE ON THE FORM

[MinhT1]

Nine states — Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington and Wyoming — have no state income taxes.

As your state Washington has no state income tax, it isn't in the drop down menu of Box 15 of form 1099-INT. Just leave boxes 15 and 16 blank even if WA is listed in box 15 and box 16 is filled with an amount on your form 1099-INT.