You may file this application online at onestop.md. Maryland requires all homeowners to submit a onetime application to establish eligibility for the Homestead Tax Credit.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. You'll need your county code, which you can find on the application. If handwritten please print legibly. Within the past tax year: • The home must be your primary residence and you must have lived there for at least six months. In Maryland, the homestead exemption applies to real property, including your home, condominium, or co-op. The drivers license or other ID is used to check against where the tax credit is filed. The dwelling for which the application is being made must be the applicant's principal residence.