Neb. Rev. Stat. § 23-143

The county board of any county, whenever the account or claim of any person, firm or corporation against the county is presented to them for allowance, shall procure from the county treasurer a certificate of the amount of delinquent personal taxes assessed against the person, firm or corporation in whose favor the account or claim is presented, and shall deduct from any amount found due upon such account or claim the amount of such tax, and shall forthwith issue a warrant for the balance remaining, if any.