After you file


@Mike9241 wrote:

yes it is elective but my understanding is if you don't make the election any distributions for the year have to be made before year-end.   if distributions could be made any time after year-end and be treated as prior-year distributions 663(b) would be meaningless - why choose 65 days if you had until the due date of the return.


That is correct and the initial post was not exactly straightforward.

 

The OP has now clarified this in a subsequent post.