By when must all New Jersey taxpayers file their income tax returns for property deductions?

The correct answer is April 15th because it aligns with the traditional deadline for filing federal income tax returns in the United States. In New Jersey, property tax relief programs, including deductions for senior citizens and disabled persons, require taxpayers to complete their income tax returns by this date to qualify for any deductions related to property taxes paid in the prior year. This deadline ensures that the information used to assess eligibility for these deductions is up-to-date and reflects the taxpayer's income accurately.

The timing of this deadline is crucial as it allows both taxpayers and local tax assessors to process the necessary documentation efficiently. It ensures that any deductions claimed are based on current and relevant income information, facilitating a smooth process for property tax relief.

While other options might seem feasible as deadlines for various tax-related matters, they do not correspond with the specific filing requirement for New Jersey property tax deductions.