rental property's expenses exceeded the rental income received. Which form do I report this on?
All rental income and expense is reported on Schedule E. Just follow the Turbotax rental interview.
<a rel="nofollow" target="_blank" href="https://ttlc.intuit.com/questions/3168732-mortgage-more-than-rent">https://ttlc.intuit.com/questions/3168732-mortgage-more-than-rent</a>
and remember that mortgage principal is not deductible.
Also see:<a rel="nofollow" target="_blank" href="https://ttlc.intuit.com/questions/3051195-negative-monthly-cash-flow-on-a-rental-property">https://ttlc.intuit.com/questions/3051195-negative-monthly-cash-flow-on-a-rental-property</a>