The rut is more or less finished in my area,in some areas you might find individuals continuing to show rutting activity till the end of the month or occasionally into September, you will know when its finished as you will hardly see a Buck on your ground this state will last a few weeks maybe a month before you see them again
even then its usually young Bucks you will see after the rut.
Personally I will have no more let days for Bucks but might cull a few yearling Bucks myself in September which can be an OK time catch up with yearlings you would like to remove but which would not have been of interest to clients.
If you are Lucky you may see some rutting activity to wards the end of September, the so called false rut, don't see it every year and even when you do its usually yearling Bucks that get involved and only a small proportion of them at that.