Tenant paying rent on the 15th okay?

[Matthew Leitch]

I have a tenant that would like to pay the rent on the 15th of every month. They are about to move into the property and are most likely asking because we require a full month's rent as a deposit as well as a pet-deposit. On top of the first month's rent  - that can be a lot at one time.

Is it okay to accept rent on the 15th of every month? Personally, I do not have a problem with it, however, most of what I have read is that this is a bad sign and that rent should always be paid on the first of every month? Any insight will be helpful. Thank you.