It's times like these that I'm thankful to insist upon first/last/deposit and only do monthly leases anyways. 

Tenant has been nothing but a problem since moving in. Made up claims and accusations, that upon professional inspection turned out to be baseless. 

Now here we are, the due date/grace period for rent was yesterday. Of course banks were closed but they could have paid Saturday or any number of other days the bank was open.

So I email them and ask that if they have paid to disregard my email but if they have not, since rent was now late (I only accept rent deposited in a business checking account) to include the $25 late fee ($15 general late fee + $10 per day late). She replies, "No problem" and that's that.

Well, these people have yet to pay today. Looks like in a few hours I'll be stopping by to serve them their notice. Sigh, I may very well just ask them to move out at the end of the month anyways even if they do pony up the money. Nothing but problems from these people from the beginning and I don't imagine it getting better.