Why do I need turbotax deluxe for a 1099 form when I already paid the taxes on it when I withdrew it?

[MaryK4]

If you received a 1099 and had taxes WITHHELD, you still need to report the income and file the tax return once a year- you do not pay the tax at the time of the wihdrawal.  The income must be added to your other income and deductions and credits are applied before you get your tax liability.