Fiscal Close is a process you run to close out one fiscal year and begin another. Fiscal Close is usually done on July 1st or within a few days, possibly weeks, after.
There is always some amount of preparation to be done before performing your fiscal close. This can begin even a few months in advance, continuing right up until fiscal close. See the Fiscal Close Checklist for a list of cleanup tasks.
You should check these before fiscal close to be sure they are set the way you want them. See Fund Propagation and Rollover for more information.