Hi,
If I am understanding your question correctly you are asking if you can file jointly during this current tax season and you are getting married Oct 2019? If that is your question then no you can't file married or jointly because you're filing for 2018 this season and you weren't married in 2018 ...you will file for 2019 next tax season in 2020 in which you can file jointly...hope this helps...congrats on your marriage and Best wishes!!!
