"I am filing Married Filing Separately and I lived away from my wife for all of 2018. I have a rental house with losses it says zero deduction and don't understand why?

[JulieR]

I don't know the details of your other income however, married people who file separate tax returns and live separately for the entire year are each entitled to a $12,500 offset. But if you are married filing separately, rental losses are not allowable if your adjusted gross income is more than $75,000.