The bigger pockets calculators definitely help a lot.

They control the tax bracket and tax calculation.

Johann , there're already software like that from 4 years ago LOL ... it has nothing to do with "AI" in my opinion LOL as I can calculate comps in 38 seconds LOL.

These all require applicants to submit an acceptable Letter of Explanation addressing each specific issue and occurrence.Rental HistoryBecause a current landlord may say anything to get rid of a bad tenant out of desperation, we also require information for the previous landlord of all applicants…Analyze IncomeMany landlords require a month of paystubs from applicants and just use these to calculate a monthly qualifying income…Employment StabilityUnless an applicant has exceptional credit, we strive to determine their stability of employment…AssetsWe are one of the few management companies that requires a bank statement as part of our application process…Letter Of ExplanationAny time there are credit issues or we discover an inconsistency, we require a written letter of explanation (LOX)…UnderwritingTraditionally, landlords have only looked at the income of applicants…ApprovalOnce an applicant is approved, we require a nonrefundable Holding Fee to make sure they are serious…

How much vacancy do you calculate into your numbers?  

It really becomes a time value of money calculation based on when you want to sell your Class A rental.

As we all know, the standard way BP says to calculate cash flow actually leads investors away form long-term opportunity and leaves a lot of investors on the sidelines because they don't understand IRR and the multi layered dynamics of investing long-term.  

View report*This link comes directly from our calculators, based on information input by the member who posted.

I suspect I can build this in 6 to 10 hours, but it is always helpful to have another brain on the job. 3) There is an advanced function I would like to build, but sadly I can't recall the mathematical functions necessary to make the calculations. 

Per this NY Times article, the average American knows around 600 people.https://www.nytimes.com/2013/02/19/science/the-average-american-knows-how-many-people.html#:~:text=The%20average%20American%20knows%20about,do%20you%20know%20named%20Kevin%3FPer the US Census Bureau, the average American moves 11.7 time in their life, which based upon an approximate lifespan of 84 years, works out to be about every 7 years.https://www.census.gov/topics/population/migration/guidance/calculating-migration-expectancy.html#:~:text=Using%202007%20ACS%20data%2C%20it,one%20move%20per%20single%20yearSo, if the average American knows 600 people and they each move about every 7 years, that means that the average American knows around 85 people that move in any given year.How many of those moves do you want to be involved in?