It's pretty self explanatory. The only number you won't be able to pull from somewhere is the homeowner's insurance. A lender friend of mine (here in Vegas) tells me they calculate by multiplying the purchase price by .0033 to get a fairly close estimate of the yearly premium rate. As for the vacancy, maintenance, cap-x, and management costs, I use 8%, 5%, 5%, and 8%. 8% vacancy = 30 days. Homes in Vegas are not all that old and most have been remodeled (or will be before they are leased) so 5% maintenance works. 5% for bigger items (roof, A/C, water heater, etc.) is just an estimate. It does work out fairly well for an estimate but should be adjusted once the usable life of these items has been calculated. (Example, you know a roof is good for 25 years and costs $25,000 to replace, so you should budget $1,000/year of your rental income towards the roof, A/C, XXX, whatever.) Finally, 8% management fee. I know 10% is most prominent but here in Vegas we can find a couple of PMs for an 8% fee. Hope that helps!