Subject to section 960H of the Act of 1997 (as applied by section 120) and section 26, where the amount of the local property tax deducted by the Minister from a liable person's net scheme payments in the period specified in the direction given under section 102 exceeds the amount which the Minister was directed to deduct under section 102 or 109, as the case may be, the Revenue Commissioners shall repay the excess to the liable person.