@ Nathan, I was thinking the same thing as a potential flaw in my strategy. Going forward I would require one to be put on file. I wondered about the legality of doing that, but most hotels and car rental places demand a credit card for incidentals, so I think I would be good as far as tenant screening.
@ Anthony, after a bit of digging, I found the square app can have manually entered credit card numbers, but they charge a higher rate. This will be taken into account upon invoicing so it won't affect me so much.
I had not thought of using the card to invoice for incidentals, but that is a great idea as well! I have only gotten burned once with a terrible move out, but it certainly was painful enough. A credit card will be very useful in this situation, if worded correctly in the lease.
To capture everything suggested thus far, I am thinking something like this to be added to the lease, "On the 6th day of the month, if the rent has not been paid, the tenant agrees to have their credit card charged for the total rent amount, plus a $50 late fee, as well as any credit card processing charges. If at any point, the tenant has canceled their above listed credit card, this will be interpreted as voluntarily ending the lease, effective the date of cancellation. Upon move-out, should any damages exceed the amount of the security deposit, the tenant agrees to have their credit card charged for the balance owed on the damages."
What do you guys think?