The phrase "rent amount" refers to the specific cost or price of renting something, such as a house or apartment, for a certain period of time. Full definition
Management fees are typically 3 % to 10 % of the gross monthly rent amount. (richdadadvisors.com)
Likewise, I've always been under the impression the 4 % could be based on the entire rent amount as there is nothing that explicitly says you can't. (biggerpockets.com)
The standard here is to make sure that your tenant has income that is 2.5 to 3 times the asking rent amount. (rentalutions.com)