I multiply the rent by the occupancy rate.As we speak i'm analyzing a deal where the rent is $900/mo, in an area which typically sees a vacancy rate of 10% - which translates to a 90% occupancy rate90% of $900 is $810 and that's the number I use for my analysis

I don’t underwrite my deals like that, or see any sort of statistics based on multipliers as an agent. 

One of the simplest to understand is the Gross Rent Multiplier (GRM) approach.

Where the opportunity is, every distressed list that is being targeted now will multiply in a recession. 

Multiplied the Investment By a lot!

The single family and duplex will not increase in value when you increase rents and a 4-plex or more units will increase in value almost exponentially when you increase rents due to the Gross Multiplier. 

@Steven Luttman After doing more research, according to smartassest calc, Albany County property tax rate is 2% (Am I correct to assume you multiply the purchasing price of house (Foreclosed home @ $17,500 x 2%, which would give me $368) OR would I have to multiply the ARV x 2%? 

Customers cant do math , All they hear is the hourly price , they dont understand the term " Man hour" and they cant multiply . 

Going forward, if you want to estimate the first year's monthly MIP for an FHA loan (the amount decreases each year), simply take your purchase price, multiply by your LTV (ex: .965 for 3.5% down), multiply by 1.0175 (unless you don't plan to finance the upfront MIP...most people finance it), multiply by .0055 (or .005 if you'll put 5%+ down), and divide by 12.https://www.hud.gov/press/pres...

That amount is 188,312. b) Since that is the maximum, and you have 100K already charged, you have to subtract the amount charged from the maximum available.  188,312 minus 100K is 88,312 remaining guaranty. c) Last, since the guaranty is 25% of the max amount, you have to take 88,312 and DIVIDE it by 25% (or multiply it by 4 obviously) to get your NEW maximum with zero down - 353,250...