I am about to start intern year and was trying to find out what my options are for trying to take time off for a legit reason for one year.
Depends what the "legit" reason is. If you used the NRMP or other match service to get your position, without a waiver from the match, you are potentially in danger of violating the match if you are considering not starting.
If you start and work at least 1 day, then the NRMP plays no role in any potential sanctions.
Do program allow taking time off in the middle for the year and then coming back at the some point on year later?
Depends on the program; would be unlikely for a call heavy specialty as this puts them in a severe bind.
Would it be better to take time off after completing my intern year?
Yes. That gives them time to find a replacement for you. What people fail to realize is that by taking time off the amount of work does not change. Most programs function on bare bones resident staff. One person leaves means more work the rest left behind, especially if you leave in the middle of the year. Its awfully hard, if not impossible to find a replacement. If you give them advance noticed about taking a year off at the end of the year, its much easier to finagle the call schedule, rotations, etc.
Most contracts require 90 days notice of a desire not to sign a contract for the following year.
How accommodating do you thing they might be if i tiried to take it off right now?
Not very.
What you are contemplating is not only a match violation, but is horribly inconsiderate. The year has been planned out assuming you were coming...call schedules, rotations, vacations, etc. You can almost assuredly expect that if you bail now that you will not fare well in the match next year (ie, I do not imagine your program will "save" your spot for you until next year). Residency is not like medical school - you can't enter and leave at will.
If you leave now, do so with the expectation that it will not be well received and that you will not get a match waiver which means you are not allowed to participate in the match for a period of 3 years. Hope its a legit reason that you just found out about for your sake.