I went on deployment in 2018 for 5 months but never filed my taxes for that year. I already filed my taxes for 2019 because I work now. How do I do back taxes for 2018?
To complete and file a 2018 tax return using TurboTax you would need to purchase, download and install on a personal computer one of the 2018 desktop editions from this website - https://turbotax.intuit.com/personal-taxes/past-years-products/
A 2018 tax return can only be printed and mailed, it cannot be e-filed.
Is there a way to do it for free through the IRS website?
@DWhit21 wrote: Is there a way to do it for free through the IRS website?
No, not for 2018. The IRS Free File site is only for the current tax year, 2019 - https://apps.irs.gov/app/freeFile/