There is also likely to be a reduction for vacancy and credit loss (to acct. for turnover)Finally, while your lender will have their methodology for calculating DSCR to determine cash flow potential, when you underwrite your own deals, its important to both understand the differences and base it on your own situation, risk tolerance and unique advantages.Bottom Line - An important piece of real estate investing is to understand your cash flow and DSCR is the best metric to evaluate it.

This lowers GDP, which can lead to recessions (although they changed the methodology to not measure a recession by GDP so maybe this part isn't applicable.)

Again, your ego are going to explode and freak out because you'll never hear this concept from Grant Cardone, so here we go.There's a concept in ancient Chinese spirituality called Wu Wei.

If you are doing a conventional financing, then they are likely following the same rulebook and methodology on your income as everyone else since it all needs to qualify for Agency financing. 

I know of at least 2 methodologies that I think are cannot miss.  

I agree with David Dachtera on the expensiveness of D&B, but I personally believe that experian business credit will overtake D&B, it will take a couple more years but experian is much more popular than the ancient D&B.

Would need to know more, but I've always preferred first hand research vs. secondary research until I confirm I trust the source and methodology of the secondary source.

I'm an industrial engineer by trade, and we are always focused on figuring out a fast or efficient way to get things done, so I'll try and write here in the forums about any new and unique analysis or paperwork methodologies I come across in the near future. 

Finally, a residential appraisal versus a commercial appraisal will use a different methodology. 

You will find many informative posts about their very odd bidding methodology.