wrote:@Rosangelina
Do the 1040 and 3115 have to be mailed together?
You have to attach Form 3115 to your 1040 and also file a copy of the signed Form 3115 (duplicate copy) with the IRS National Office.
See https://www.irs.gov/instructions/i3115#en_US_202212_publink63215hd0e217
