Listening to one of Brandon Turner's books and he mentions this (https://www.biggerpockets.com/blog/plan-to-make-a-million)My question is how do you calculate your loan paydown for the principal and how much equity you've built up?

Yeah, I did a calculation it is really hard to get a positive cash flow in beaverton where we live. 

Start running potential purchases though the BP Calculators!

They have a good and simple lease builder as well.Use rentometer and the BP Pro rental calculator to be sure you price it correctly, and take into consideration any expenses you might not have considered.

You should be able to get a DSCR financing without including the PM fee in the calculation as well which would give you more leverage.

Will average all deposits over last 12 months to calculate monthly income, and then depending on the type of business, apply an expense ratio. 

Understand that there are always risk when you are doing something but risk can always be calculated.

If you don't believe me, head over to the BP rental calculator, plug in a $1 million property with very average appreciation and see what happens over 30 years.Instead, look at buying or starting a business.

Lead magnets like property search tools, home valuation calculators, or free guides.

When you’re evaluating a potential deal, what are the key metrics or calculations you always focus on?