For a general exemption you should file your exemption application between January 1 and April 30. Early applications will not be accepted.The typical deadline for filing a Collin County homestead exemption application is between January 1 and April 30. Pay property taxes on time. Property Tax Statements are mailed out in October, and are due upon receipt. What is the Deadline? Your application must be submitted between January 1 and April 30 of the tax year. The typical deadline for filing a county appraisal district homestead exemption application is between January 1 and April 30. GENERAL INFORMATION: Property owners applying for a residence homestead exemption file this form and supporting documentation with the appraisal district in. Today we're actually applying and doing the homestead filing so you know how it gets done.