Collection of additional tax and issuance of refunds.

If the tax is increased the department shall proceed to collect the additional tax in the same manner as other income or franchise taxes are collected. If the income or franchise taxes are decreased upon direction of the department the secretary of administration shall refund to the taxpayer such part of the overpayment as was actually paid in cash, and the certification of the overpayment by the department shall be sufficient authorization to the secretary of administration for the refunding of the overpayment. No refund of income or franchise tax shall be made by the secretary of administration unless the refund is so certified. The part of the overpayment paid to the county and the local taxation district shall be deducted by the secretary of administration in the secretary’s next settlement with the county and local treasurer.

No action or proceeding whatsoever shall be brought against the state or the secretary of administration for the recovery, refund, or credit of any income or surtaxes; except in case the secretary of administration shall neglect or refuse for a period of 60 days to refund any overpayment of any income or surtaxes certified, the taxpayer may maintain an action to collect the overpayment against the secretary of administration so neglecting or refusing to refund such overpayment, without filing a claim for refund with the secretary of administration, provided that such action shall be commenced within one year after the certification of such overpayment.