https://ttlc.intuit.com/ Entering your 1098 forms in TurboTax Online: IRS tax form 1098, without a letter (such as E, T, or C), is a mortgage interest statement. If you have a mortgage on your home, your lender should send you a Form 1098 by early February. To learn about entering your 1098 tax form in TurboTax Online, watch this helpful TurboTax Support video. For more answers to your questions, visit TurboTax.com/Support.