Yes you can, but you might incur some penalties if you owed money.
You can file up to 2 years back taxes.
You can file as back as you want. If you owe taxes, the IRS will only prosecute up to seven years back, so it's recommended to only file the last seven years. If you are due a refund, the IRS will only refund the previous three years.
how do I file for my refund from my time spent in prison (last 3 years)
Yes, if you had a Marketplace plan in the previous year, you will need to file Form 1095-A when you file your taxes.
Yes, you can file your 2016 taxes in 2018 as long as you meet the deadline for filing back taxes, which is usually three years from the original due date.
No, you cannot file a homestead exemption for previous years.
No, you cannot file a homestead exemption for previous years.
You would have to file a amendment to that years tax. You can go to the IRS website for the correct forms.
You can always file them the next year, or the year after that. In fact, if you don't have the necessary paperwork, contact the IRS and they will send you all the tax papers from the previous years. Since they have all the information on file, you can complete multiple returns in one year. However, after a certain amount of years you will not get a refund back. So don't delay, go out and get your money back!
NO
You will have to pay a fine. And pay all the money back that you owe.
No, you do not need special training to submit back taxes. You simply have to file for that particular year.