So from a mathematical standpoint, is the "good tenant" discount worth 10%?

Basically, all loan calculators work on the  similar mathematical formula: [P x R x (1+R)^N]/[(1+R)^N-1where P stands for the loan amount or principal,R is the interest rate per month [if the interest rate per annum is 11%, then the rate of interest will be 11/(12 x 100)],and N is the number of monthly installmentsAs you have all three figures i.e your total loan amount, rate of interest and the period, then you can easily calculate its EMI on the basis of above formula.

* paying off the mortgage with the lowest balance created the greatest cashflow & brought all properties to a zero-balance fastest (mathematically, this is not always the case, and you could easily find a counter-example if the purchase prices are very far apart)I really want to learn how you're going to amass 15 properties!

Mathematically, the statement that you can have more debt and less risk is incorrect.

Surprisingly very doable mathematically speaking.

Mathematically it only works were some form of forced appreciations is occurring...generally fix and flip in the sfr arena.

Excel or a financial calculator is essential and actually running the numbers on a prospective property is better than a rule of thumb.Anyone who cannot cope with mathematics is not fully human.

There are some more complex mathematical ways to calculate backwards such as using a Net Present Value calculation but if this is all new, stick with the easy math first.

It makes mathematical sense and made sense to me at the time.

If during the interview the applicant said they make $50k per year, the origination team verifies that number against the collected paystub and tax forms and corrects the number to be mathematically correct to the supporting documents.