The Property Tax Search is provided as a public service by Bernalillo County. County property taxes are usually mailed by the Treasurer on November 1 of each year. The First Half Tax payment is due November 10 and becomes delinquent if not paid by December 10 (each year.) The second Half is due April 10 and becomes delinquent after May 10 (each year.). Assessed values and property taxes can be protested by May 30 of each year. We offer complete property tax protest services. Contact us to discuss.