Who has to file a return
If you are being claimed as a dependent on your parents or anyone else's return then you will have to file a tax return. If not then no you don't have to file a return.
Each state has its own rules as to who has to file a return.
how can I file an amendment to my 2010 tax return?
You can file one federal return. And you can file one return in each state. If you made a mistake or left something out, you have to file what is called an "amended return."
There is a form that you are required to file when you paper file your PA state tax return.
can i e file my mass tax return for free
eveyone who earns income above a certain level has to file a tax return
If companies file a consolidated tax return do they become liable for each other's liabilities
You can still file your tax return, however, there may be some late fees for the late filing.
If you have filed a tax return but you then realize that your return is inaccurate in some way and you wish to correct the inaccuracy, you can file a revised tax return which would be called an amended tax return.
Yes, you can file a state tax return without filing a federal tax return if you meet the state's filing requirements.
As long as you are still married to each other, you can file a joint return. However, it is not mandatory for married couples to file a joint return.