My mother transferred her coop shares to me last December while she will continue living in the coop and making all necessary payments. Do I need to file a tax form?

[Mike9241]

nothing for you to file but your mom probably needs to file a gift tax return (form 709) if the value was over $16,000. Turbotax does not do these returns. . From a tax perspective that was not the best move.  you will inherit the coop with the same tax basis that your mother had.  you will not get a step up to fair market value in the event of her death.   you will pay capital gains on the full amount of gain unless you move in and live there for 2 years before selling.