Your basis is the purchase price plus all improvements.For tax purposes we take your basis and subtract the land, as land is not depreciable.

Anything in front of the foreclosing lien has to be subtracted off your maximum bid.

Subtract the cost of repairs.

You can usually get a realtor to give you comps (or comparable prices) pretty easily if it's someone who's investor friendly or someone you may have worked with before.When trying to negotiate the price on an owner financed opportunity, I usually take what it would sell for on the open market, and subtract 10% from it.

Do I just wait until the day he moves out and subtract from his security deposit any costs that occur due to cigarette smell in the house, if there is any?

I also add up their current payments on all debts via the credit report, the rent payment, utilities and others and then use that final number to subtract from their net income to get an idea of what their disposable cash position is each month.

Are you subtracting something you're supposed to be adding?

After that calculation was done you could then subtract the amount of rent  you're currently paying just to see what the overall result would be rather than putting that directly into the original calculations.    

i have all the income and expenses, but im not really sure what to do.i subtracted income-expenses and it came out to 56,000 /year and it could be more because theres a large retail space that is vacanthow do i know what a good offer would be?  

Now, as a wholesaler, you have to subtract your fee from the offer.