Generally, you must file a New York State resident income tax return if you are a New York State resident and meet any of the following conditions. Use the free New Jersey Online Filing Service to file your 2024 NJ-1040 return.It's simple and easy to follow the instructions, complete your NJ tax return,. Form 6166 is a letter printed on US Department of Treasury stationery certifying that the individuals or entities listed are residents of the United States. Deadline to file is October 31, 2024. This legal process is known as probate, and it occurs regardless of whether the deceased (also known as the decedent) had a valid will or not.