For a general exemption you should file your exemption application between January 1 and April 30. Early applications will not be accepted. For Over 65 or Disabled Person Exemptions; if you turn 65, become totally disabled or purchase a property during this year, you can apply to activate the Over 65 Exemption or Disabled Person Exemption for this year. You have one year from the date you qualify to apply for the exemptions for the tax year you first qualified. For example; if you turn 65 during the year you have until your 66^th birthday to apply to receive the exemption for the tax year in which you turned 65.