topic Is mailing 2017 taxes and efiling 2018 taxes at the same time allowed? I'll be using some data from 2017 (such as federal refund) in 2018 filing. in Get your taxes done using TurboTax https://ttlc.intuit.com/community/taxes/discussion/is-mailing-2017-taxes-and-efiling-2018-taxes-at-the-same-time-allowed-i-ll-be-using-some-data-from/01/243631#M102009 Sat, 01 Jun 2019 19:59:13 GMT shash 2019-06-01T19:59:13Z Is mailing 2017 taxes and efiling 2018 taxes at the same time allowed? I'll be using some data from 2017 (such as federal refund) in 2018 filing. https://ttlc.intuit.com/community/taxes/discussion/is-mailing-2017-taxes-and-efiling-2018-taxes-at-the-same-time-allowed-i-ll-be-using-some-data-from/01/243631#M102009 Sat, 01 Jun 2019 19:59:13 GMT https://ttlc.intuit.com/community/taxes/discussion/is-mailing-2017-taxes-and-efiling-2018-taxes-at-the-same-time-allowed-i-ll-be-using-some-data-from/01/243631#M102009 shash 2019-06-01T19:59:13Z Yes, mailing your 2017 taxes and e-filing your 2018 taxes... https://ttlc.intuit.com/community/taxes/discussion/yes-mailing-your-2017-taxes-and-e-filing-your-2018-taxes/01/243642#M102012 <P>Yes, mailing your 2017 taxes and e-filing&nbsp;your 2018 taxes at the same time is allowed.</P><P>In order to e-file your 2018 Tax Return, you will need to enter -0- for your 2017 AGI since that return hasn't been processed by the IRS yet.</P> Sat, 01 Jun 2019 19:59:14 GMT https://ttlc.intuit.com/community/taxes/discussion/yes-mailing-your-2017-taxes-and-e-filing-your-2018-taxes/01/243642#M102012 Rachel_W 2019-06-01T19:59:14Z Thank you. https://ttlc.intuit.com/community/taxes/discussion/thank-you/01/243648#M102015 Thank you. Sat, 01 Jun 2019 19:59:16 GMT https://ttlc.intuit.com/community/taxes/discussion/thank-you/01/243648#M102015 shash 2019-06-01T19:59:16Z