You can also get creative, YOU ARE LITERALY USING THE SAME FORMULA TODAY! 

For purchase price, use this formula,  (Arv * .70%)- Rehab = Purchase Price

The formula is pretty straightforward Total expenses/ total gross income = cannot exceed 50%.

People who sign up for his course automatically become members of the “RAND” clubs (Robert Allen Nothing Down clubs) where the emphasis is on buying real estate with “nothing” down.1979 - Wade Cook (convicted felon), Ted Thomas, Carlton Sheets, and Ed Beckley pioneer using late night infomercials to sell their books, tapes. and “complete systems” for $999 discount to $599 if “you act now”1981 - Real estate investment clubs are formed around the country following a REIA formula - many RAND clubs are merged into these REIAs1981 - Jimmy Napier, Joe Land, Ernie Kessler, and John Beck appear at REIA Clubs as featured guest speakers, selling books, tapes, etc “in the back of the room”.  1983-1995 - The guru industry is dominated by late night infomercial gurus, many trying to disguise the commercial as if they’re a guest on a talk show.  

My unique approach combines deep market analysis with a strong network of motivated sellers, ensuring you access the best deals before they hit the mainstream market.I’d love to know more about your target market areas and buying formula.

I just looked at the sheet again, you must have that growth built into your formulas ( i have not downloaded it, just looking at your link) you should have a way to have a growth input %, some areas do not Appreciate like others and you should be able to adjust that.

Do you have a particular formula or method you rely on to make sure the numbers add up?

You don't need a formula to borrow funds.

Quote from @Devin James: @Jon K.The average return is not the same as an annualized return, as it ignores compounding.Your calculation takes compounding into account.https://www.investopedia.com/terms/a/averagereturn.asp#:~:text=Key%20Takeaways-,The%20average%20return%20is%20the%20simple%20mathematical%20average%20of%20a,return%2C%20as%20it%20ignores%20compounding.Links to the formula for ARR, which was the subject of your original post unless I misunderstood you.https://www.investopedia.com/terms/a/arr.asphttps://www.adventuresincre.com/glossary/average-rate-returnhttps://www.highradius.com/resources/Blog/accounting-rate-of...

My lease says I get paid $40/hr to do work tenants are supposed to do or fix their damage.The job sounds easy, especially if you have leftover paint or the paint formula.