Instructions for using this Simple 1 Percent Calculator

The values in the fields below are example values.

To begin, enter the total expected gross monthly rent and the purchase price.

As you enter your values, the calculator works continuously in the background to calculate and display the gross monthly rent as a percentage of the purchase price. Feel free to play with the numbers and try various what-if scenarios so you can see percentage changes as you adjust the gross monthly rent and/or the purchase price.

If the result is 1.00% or greater, your property will most likely have a positive monthly cash flow. This means that as long as your property is fully rented, you can expect to have some money left over each month after paying all the usual expenses, including the mortgage payment.