If you refer to your lease, it will probably tell you that pre-paid rents (in this case they would be post-paid rents) cannot be used for damages or considered as security deposits. 

Here's something to consider- there's a company called Legal Shield (formerly known as Prepaid Legal Services).

Maybe you can install a pre-paid card system to avoid that. 

Disregarding the tenant quality, as an example in Florida prepaid rent must be held in a segregated account and drawn on as the rent comes due.

Can you place the prepaid rent in legal trust? 

I obviously believe in Legal Shield (aka Pre-paid Legal), so I signed up to be an associate for them too.

So follow up on my insurance endeavor.No longer using the big insurance company.Went with a local agent and received the following:home ins on my primary residence @ 300-400 price reductionhome ins on my rental (3unit) @ 200-300 price reductionI'm getting 80-90% back from my prepaid insurance premiums on both propertiesput all my autos (wife's, mom's and mine) @ increase of 200 (oh well)also, got umbrella ins so #dontsuemebroNet Savings of ... $300 / year on the low end.

I can MAIL it to you, but you would have to send a self-addressed stamped envelope to:I**********Li***** ME 040**Sorry for any inconvenience, but keywords provide unlimited access, and therefore must be protected.Chuck--------------------------------------- From: clary <*****@****.com>To: Administration <*****@*****.com> Sent: Wednesday, March 5, 2014 1:13 PMSubject: RE: Question I sent an overnight package to the address you emailed me with a return prepaid overnight envelope.

Do it in volume and you can make more on the winners than you lose on the losers.I had one about six years ago where the owner had deeded the property to a friend and then conspired with the friend to draft up a fake ten year lease that was all prepaid by way of her "selling" the house to him at a $500K discount. 

The only thing I'd want to confirm is the very unlikely situation that several tenants have pre-paid the next several months in advance.