$23,087.34 month
Residential (or Property) Taxes are a little harder to figure out... the average residential tax rate seems to be around $14 per year for every $1,000 of your property's assessed value. Let's say that your property's assessed value is 85% of what you actually paid for it - $3,310,750.00. This would mean that your yearly residential taxes will be around $46,350.50.
This could add $3,862.54 to your monthly payment.
Since you are putting LESS than 20% down, you will need to pay PMI (Private Mortgage Insurance), which tends to be about $55 per month for every $100,000 financed (until you have paid off 20% of your loan).
This could add $1,928.03 to your monthly payment.
This could add $1,928.03 to your monthly payment.