1099-INT is a Interest Incomeform. Use Form 1099-INT Copy A to print and mail federal interest payment information to the IRS. 1099-INT Forms are pre-printed 2up on an 8 1/2 x 11" sheet with a 1/2" side perforation and are printed with required red scannable ink on 20# laser paper. Order the quantity equal to the number of recipients for which you file, 25 forms per pack.