Can I amend my prior returns through TurboTax even if they were not originally filed with TurboTax?

I have had an accountant do our taxes the last several years and this year I am doing them myself with TurboTax. I have found several deductions that the accountant did not do for us (Home office, etc).  Can I use TurboTax to file amendments for 2007,2008 and 2009 even if they were not originally filed with TurboTax?  If so, should I do these amendments before I complete my 2010 return?
    Well you would first have to fill out a new return in Turbo Tax like you were doing it for the first time and hopefully come out with the same results as your original filed return. Then when it exactly matches what you filed and amounts are the same for every line on the 1040 you can do the amended return.

    If you want to amend a 2009 or earlier return you would have to buy the desktop version of Turbo Tax.
    You can buy the 2006-2009 desktop versions here....
    (Look on the right side for years 2006 to 2008.)  You need to buy each year separately.

    Or you can check for  Turbo Tax for all years on Ebay or Amazon, etc.
    • Ok, I think I get that part....should I do those prior year amendments BEFORE I complete my 2010 return?

      Does that matter?  If I go back through and amend the prior years, will the amended result of the 2009 have an impact on my 2010 that could make it different from the 2010 I am working on now?
    Contribute an answer

    People come to TurboTax AnswerXchange for help and answers—we want to let them know that we're here to listen and share our knowledge. We do that with the style and format of our responses. Here are five guidelines:

    1. Keep it conversational. When answering questions, write like you speak. Imagine you're explaining something to a trusted friend, using simple, everyday language. Avoid jargon and technical terms when possible. When no other word will do, explain technical terms in plain English.
    2. Be clear and state the answer right up front. Ask yourself what specific information the person really needs and then provide it. Stick to the topic and avoid unnecessary details. Break information down into a numbered or bulleted list and highlight the most important details in bold.
    3. Be concise. Aim for no more than two short sentences in a paragraph, and try to keep paragraphs to two lines. A wall of text can look intimidating and many won't read it, so break it up. It's okay to link to other resources for more details, but avoid giving answers that contain little more than a link.
    4. Be a good listener. When people post very general questions, take a second to try to understand what they're really looking for. Then, provide a response that guides them to the best possible outcome.
    5. Be encouraging and positive. Look for ways to eliminate uncertainty by anticipating people's concerns. Make it apparent that we really like helping them achieve positive outcomes.