Here's some additional information that may or may not apply to your situation.
If you have "RESIDENTIAL" rental property (as opposed to commercial rental property) and there is a mortgage on that property, it is not common for residential rental property to actually show a taxable profit on paper, at tax filing time. Doesn't mean it won't show a profit... just that it's not common to show a profit.
This is because when you add up the deductible expenses of mortgage interest, property taxes and property insurance along with the depreciation you are required to take on the rental property each year, those four items alone will usually exceed the total amount of rental income received for the tax year.
Add to that the other allowed rental expenses (repairs, maintenance, etc) and you're practically guaranteed to show a loss for every year the property is classified as a rental.
While it certainly doesn't hurt to send it quarterly tax payments if you want to, if you end up getting all of it back plus some, then all you're doing is allowing the taxing authority to utilize "your" money interest free, until you file a tax return and end up getting it all refunded.
