Meanwhile, according to a new report released by State Auditor Scott Fitzpatrick, Butler County residents were overtaxed by approximately $222,770 over a three-year period because of a math error by the County Clerk. The regularly-scheduled audit of Butler County also contains 10 other findings and gives the county an overall rating of “fair.”. Based on the finding in the audit, the County Clerk has now agreed to calculate property tax rate reductions properly and to make a recommendation to the County Commission to take a voluntary reduction to recapture a portion of the amount over-collected.