You may file this application online at onestop.md. Online: Go to Homestead Tax Credit Eligibility Application page, and complete the online form.Filing an online application will be faster than mailing one in. File this form and all supporting documentation with the appraisal district office in each county in which the property is located generally between Jan. Homestead exemption applications are free to file. Most appraisal districts have them online. How to Apply for the Maryland Homestead Tax Credit. Maryland requires all homeowners to submit a onetime application to establish eligibility for the Homestead Tax Credit. A homestead exemption is a legal provision that shields a home from some creditors following the death of a homeowner's spouse or the declaration of bankruptcy.