What is the primary condition under which one cannot simultaneously receive PA and SSI in NYC?

The primary reason one cannot simultaneously receive Public Assistance (PA) and Supplemental Security Income (SSI) in New York City is that individuals who qualify for SSI, which is a federal benefit for individuals with limited income and resources who are aged, blind, or disabled, will often find their PA benefits reduced or eliminated. When an individual becomes eligible for SSI, the expectation is that SSI will take precedence due to its specific focus on supporting those with disabilities or age-related income needs. Consequently, once a person is determined to be eligible for SSI, they typically lose their PA benefits. This is rooted in the principle of ensuring that the same set of needs is not funded by two separate programs simultaneously, as they both serve to provide financial support based on limited resources.

The nuances of applying for different benefits and residency guidelines do not directly impact the simultaneous receipt of these two specific benefits as pointed out in the other options. Therefore, it is the transition from PA to SSI that primarily accounts for the inability to receive both benefits at the same time.