Answer:
The second exception allows individuals to deduct up to $25,000 of losses from real estate rental activities against active and portfolio income. This deduction is lowered by 50% of the individual's AGI in excess of $100,000. This entire deduction is completely phased out if the individual's AGI reaches $150,000. For married couples filing separately, this deduction is lowered to $12,500 and starts to phase out at an AGI of $50,000.
In order to qualify for this deduction, the individual must own at least 10% of all interests in the real estate activity for the full year, and he/she must actively participate in the activity.