New York State's estate tax is calculated using the tax table provided on Form ET706. There are multiple versions of Form ET-706.You must also attach federal form 706, United States Estate Tax Return. The Estate Tax is a tax on your right to transfer property at your death. Explore 2023 state estate tax rates and state inheritance tax rates. All required New Jersey Estate Tax returns must be filed within nine (9) months of the date of a resident decedent's death. Travis County Tax Office Website The Tax Office collects fees for a variety of state and local government agencies and proudly registers voters in Travis Count.