The Harvey County Treasurer's Office provides several financial services for residents and for the County government. Some of the Treasurer's Office functions include motor vehicle titling and registration, issuing driver's licenses and tax billing and collection. The office also offers financial services for the County government. 

The treasurer is an elected position. The treasurer serves a four-year term. The current treasurer is Emily Nichols. She began a partial term in 2018, and was elected to a full term in 2020. That term runs through 2024.