first the IRS only has tax INFO gong back 6 years. second if your LLC was a partnership, there is no way for you to access the info online. you will need to file forM 4506 to get copies of the return. if it was a single member LLC you will need to get a transcriptS of your 1040. YOU'LL HAVE TO REGISTER IF YOU HAVE NOT USED THIS SERVICE BEFORE. USE YOUR SSN NOT THE LLC EIN Try wage and income transcript type. ONLY 2015-2018 ARE AVAILABLE ON-LINE. USE 4506 TO GET COPIES OF PRIOR RETURNS.
