it's hard to tell without a full review of your tax return.
1) what is your adjusted gross income? (line 8b)
2) how old were you on the date you received the pension payout? (over or under 59.5 years old)
3) what code is in Box 7 of the 1099-R?
4) are you filing single, joint or head of household?
5) are you taking social security? and is a portion of that taxable (what is on Line 5A and 5B?). Did you have any federal tax withheld from your social security payments (look at the 1099-SSA form on the right about half way down)
6) why do you think there is a minimum tax of 10% up to 25%. I am not familiar with that rule.
