Last year for 2017 or 2018? Sorry, Online is closed now so you can not start a new 2018 return or finish one. Oct 15, 2019 was the last day to efile. 2018 is now the prior year.
How to finish a prior year online return
You can only buy the download for prior years. You have to buy a separate program for each year. They only sell the last 3 years. You need a full Windows or Mac computer to install it on. Buy the download here
You have to print and mail prior year returns. When you mail a tax return, you need to attach any documents showing tax withheld, such as your W-2’s or any 1099’s. Use a mailing service that will track it, such as UPS or certified mail so you will know the IRS received the return. Don’t forget state.
Important! Mail Federal and State in separate envelopes and mail each year in separate envelopes.
If you are getting a refund, there is not a penalty for filing past the deadline. You have 3 years to file for a refund. If you owe taxes, the interest/penalties will be calculated by the IRS based on how much you owe and when they receive your return and payment. The IRS will bill you for this; it will not be calculated by TurboTax.
How to file a prior year
Or If you have a simple return You can fill out the blank forms for free.
Here is the new IRS 2018 Form 1040
And instructions https://www.irs.gov/pub/irs-pdf/i1040gi.pdf
2018 Tax and EIC Tables https://www.irs.gov/pub/irs-pdf/i1040tt.pdf
IRS 2018 Schedules 1 thru 6 (only if needed)
He can ask his employer for a copy of the W-2.
If he cannot obtain the W-2 from his employer, then for a fee you can get a complete copy of a W-2 from the Social Security Administration - https://faq.ssa.gov/en-us/Topic/article/KA-02501
"Can't find his W-2's" "last year"
By W-2 do you really mean the Wage and Tax Statement that was issued by the employer in January to show tax, Social Security, Medicare, etc. that was withheld--or are you using that term to refer to his tax return? (Form 1040)
By "last year" what tax year do you mean--2017 or 2018?
TurboTax does not have copies of anyone's W-2's. Those come from employers, or you can pay Social Security $86 for each one.
To get a copy of a W-2 from Social Security https://faq.ssa.gov/en-us/Topic/article/KA-02501
You can get a wage and income transcript from the IRS: It will not show the actual W-2, 1099’s, etc, but will show the income information the IRS received. It will not, however, show your state information. It will only show the federal information.
In order to file a past year return, you will have to print it, have your BF sign it in ink, and mail it in. It is too late to e-file 2017 or 2018.
When you mail a tax return, you need to attach any documents showing tax withheld, such as your W-2’s or any 1099’s. Use a mailing service that will track it, such as UPS or certified mail so you will know the IRS/state received the return.