https://ttlc.intuit.com/community/taxes/discussion/form-8453-please-help/01/3297720#M1213258 <P>I hace a Form 8453 generated from my 1099-B. Do I have to send this in even though I e-filed. Do I still have to fille and send in by mail Form 8453 as well as Form 8949? I have sent in the total loss and the basis. Do I have to send in a form with all the details although there are only 4 listed?</P><P>&nbsp;</P><P>PLEASE HELP</P> Wed, 11 Feb 2026 09:20:46 GMT lavender Mary 2026-02-11T09:20:46Z https://ttlc.intuit.com/community/taxes/discussion/form-8453-please-help/01/3297720#M1213258 <P>I hace a Form 8453 generated from my 1099-B. Do I have to send this in even though I e-filed. Do I still have to fille and send in by mail Form 8453 as well as Form 8949? I have sent in the total loss and the basis. Do I have to send in a form with all the details although there are only 4 listed?</P><P>&nbsp;</P><P>PLEASE HELP</P> Wed, 11 Feb 2026 09:20:46 GMT https://ttlc.intuit.com/community/taxes/discussion/form-8453-please-help/01/3297720#M1213258 lavender Mary 2026-02-11T09:20:46Z https://ttlc.intuit.com/community/taxes/discussion/re-form-8453-please-help/01/3297967#M1213371 <P>Based on the info I found on the IRS website, <STRONG>you DO</STRONG> need to mail Form 8453 and include (see the box on the form to check) Form 8949 if it was not included in your e-filed return.</P> <P>&nbsp;</P> <P>See the attached webpage from the IRS.&nbsp; The instructions include both Form 8453 and instructions on mailing your forms to the IRS.&nbsp; You need to do this within 3 days of having your return accepted by the IRS, so don't delay.&nbsp; You also may want to mail this via certified mail so that you have proof of receipt by the IRS.</P> <P>&nbsp;</P> <P><A href="https://www.irs.gov/pub/irs-pdf/f8453.pdf" target="_blank">2023 Form 8453 (irs.gov)</A></P> Wed, 03 Apr 2024 01:43:13 GMT https://ttlc.intuit.com/community/taxes/discussion/re-form-8453-please-help/01/3297967#M1213371 Kat 2024-04-03T01:43:13Z