What to do with new tenant who submits rent past agreed due date?

[Mark Belenky]

I have a new tenant of two months and as of now has submitted rent payment past the due date of the 1st of the month but, prior to the official "late date" of the 5th.  We're definitely not off to a good start but, I do understand that getting settled in can take more time for some more so than others.

Can anyone share their thoughts on how to best deal with this?