(a) Each year the county governments shall make full, final and complete settlement with the receiver of taxes and county treasurer or director of finance, allowing to them all taxes which shall have been found impossible to collect by reason of errors in the assessment lists or otherwise, and not through their default, neglect or delay, which settlement shall be final and conclusive. No other allowance in any form or guise shall be made to the receiver of taxes and county treasurer or director of finance by the county governments.
(b) Such settlements in Kent County shall be made during the month of June.