Rough estimate after subtracting hard costs is that you are walking away with $12k?

Then, subtract out the repairs.

;)What happens if we just stay with addition, subtraction, multiplication and division?

Subtract off 50%, then your P&I payment.

Then you would subtract your mortgage from the remaining $1000.

I usually take that amount and subtract 10 to 20% from it and negotiate the payment of the draw from there.

I never pay more than $100 earnest when contracting on a property from an individual.You need to have accurate comps to determine the ARV, then subtract 30% which means you will be selling at 70 cents on the dollar, subtract repairs from the 70% of the ARV, and that is what you need to sell the property at to your cash buyer.

Then subtract any specific expenses to the property.If this property was designed as a double, and there are separate water meters, that will help.You can do better on the mortgage rate.

To calculate your cash flow:Take your monthly rent, subtract your monthly loan payment on the property, subtract 1/12 of your annual property taxes, subtract 1/12 of your annual insurance premium, subtract any HOA fees.

@George Frye No, you can't go by annualized payments and call it good in the note business, you need to amortize the loan applying payments first to accrued interest and then to any late payment, if any, then to principal for each period.1st payment period; 25,000x8%=2,000/360=5.56x30=166.67500-166.67=333.33 (subtract late payment if any)= application to principal, here it would be 25,000-333.33=24,666.67 for the balance of principal for the next period.2. 24,666.67 x 8%= 1,973.33/360=5.48x30=164.44500-164.44=335.56.24,666.67-335.56=24,331.113. 24,331.11x8%=1946.49/360=5.41x30=162.21Say this payment was 1,0001,000-162.21=837.7924,666.67-837.79=23,828.88 is the new principal balance for the next period4. 23,828.79 x 8%.......and so on.Notes are on a 360 day basis, divide by 30 for each period.