(1)Any liability to pay an amount on account of a common duty chargeable under the law of the Isle of Man shall, to the extent to which it has not been discharged or enforced there, be enforceable in the United Kingdom as if it were a liability to pay an amount on account of the corresponding common duty chargeable under the law of the United Kingdom.
(2)Any amount recoverable by the Commissioners from any person under subsection (1) above may be set off against any amount recoverable by him from the Commissioners on account of a common duty chargeable under the law of the United Kingdom.