Ian, thanks for the feedback. We do a lot of user testing and the problems you are experiencing are new to us. We pay $30 for a user test session, can you email me at info at smartasset dot com, so we can get something lined up. Thank you.

On the change in your income. When you buy a property there is an opportunity cost associated with the cash that you use to purchase the property (down payment + closing costs). This money would have accrued interest income had you continued to rent, hence the larger value for income in the rent scenario.