The Special Rental Real Estate Loss Allowance is based on income, not marital status. Your joint marital income may be too high for the deduction, whereas you qualified under a single income. The income limit is same for single or married taxpayers (unless filing separately).
If you or your spouse actively participated in a passive rental real estate activity, you may be able to deduct up to $25,000 ($12,500 if married filing separately) of loss from the activity from your non-passive income.
The deduction begins to phase-out between $100,000-$150,000 ($50,000-$75,000 if married filing separately) and is suspended after that, meaning the loss is not deductible but is carried forward.
Exception for Rental Real Estate With Active Participation