This claim may be used to file for the Homeowners' Exemption for the Assessment Roll and the Supplemental Assessment Roll. Please Download PDF BOE-267-S REV.To claim the exemption, the homeowner must make a one-time filing with the county assessor where the property is located. Use the Online Payment Portal to submit your forms and make payments. City and special district parcel tax exemptions. Some of the Senior Exemptions may be income-based. To apply for a business license, you may apply online here or complete the Business License Application (New Business Tax Affidavit form). Please Download PDF BOE-266 REV. Funding for the program comes from a parcel tax on Santa Clara County properties each year. You can mail or bring it to the address noted on the application.