Yes, you can file a tax return and claim a refund for up to three years past the filing due date. For example, April 15, 2019, is the last day to file your original 2015 tax return to claim a refund. Unless you received an extension of time to file, then your deadline is October 15, 2019.
To file your prior year return, you will need to purchase TurboTax CD software as online software is no longer available. You must also mail this type of return. Please click the link below if you need to purchase prior year software.
https://turbotax.intuit.com/personal-taxes/past-years-products/
