Every January, everyone eagerly await the arrival of his or her W-2 form. All they have on their minds is when can I file taxes. If that is the only form you need, you can file immediately.
However, if you have or had interest from a bank account, an IRA, stocks, and bonds, you may have to wait for a 1099 form. Did you pay any type of mortgage interest? If so, you need to wait for a 1098 form. Did you contribute to an HSA account? If so, you may have to wait for a form from the holder of your HSA.
For many people, the question of when to file depends on when they will receive all of the proper forms. Anyone who is simply in need of their W-2 form or forms are able to file as soon as they receive them. They can also do it online and receive a faster return if they are due a refund.