First, a little disclamier:  This is thumbnail, and there are a NUMBER of factors we can't touch on, so here's the quick and dirty:  Multiply the monthly Revenue X 12. 

For the mortgage, my spreadsheet just uses a multiplier to estimate, but when I ran zillows mortgage calculator, I used 25% down and 5% for 30 years and it came out to $382.

A quick and dirty (conservative-ish) calculation for Indy investment properties is to look at the assessed value and multiply by 2.5% per year.

You go under contract and are now "live for locking," the lender pulls up the rate sheet, sees the above, looks at 14.25%, multiplies 2.123% by $400k, arrives at $8492, and offers you 14.25% to help with closing costs (which includes 8 months of property taxes, your first year of homeowner's insurance, and other things).

It would be nice to know the % that I can multiply to my purchase price so I can estimate taxes.

Then good investments can start to multiply. 2 years into my house hack of a multi I am at 23 units, quit my full time job and only work part time to supplement my rental income.

(Comps) There is an income approach using the gross rent multiplier, but it is secondary analysis.

As long as the fund keeps earning about the same, the return multiplies year after year (I know its not this simple with fluctuating returns, this is just for the example).

We are getting a cash on cash ROI of 10.19% and a gross rental multiplier of 9.37.My concern is that I am tying up $18,000 for a profit of only $158 per month/$1896 per year.

Im $140,000 in debtNOI:  $6,944.00Cash on Cash ROI:17.56%Monthly Cashflow:
$439.09Income-Expense Ratio (2% Rule):
1.96%Total Initial Equity:
$94,000.00Gross Rent Multiplier:
1.89Debt Coverage Ratio:
4.15Purchase Cap Rate:27.78%Pro Forma Cap Rate:
5.79%