Your Form 1095B is proof of healthcare insurance for the IRS and does not require completion or submission to DHCS. Please keep this form for your records.Download relevant Tax Collector forms. These include assessment removal, military property tax relief, Transient Occupancy Tax Exemption, and applicable forms. If you must submit a paper claim, mail your completed claim form along with all required supporting documents to: CCHP Claims Department P.O. Box 5122. State income tax withholding (only required if withholding differs from your federal withholding amount). Total of 103 forms are available for Contra Costa County for 2024. Please Download PDF BOE-262-AH REV. If you want a printed copy of any of our member materials, fill out the form on our Member Materials webpage. Why Join Contra Costa County?