Mangoola Coal Operations Pty Ltd v Muswellbrook Shire Council

Mangoola Coal Operations Pty Ltd (Mangoola) appealed to the New South Wales Court of Appeal against decisions of the primary judge concerning claims for overpaid council rates. The dispute centred on whether Mangoola's claims were barred by the 12-month limitation period prescribed by section 2(1) of the *Recovery of Imposts Act 1963* (NSW).

The Court of Appeal was required to determine whether Mangoola's claim to recover overpaid rates constituted a claim to recover tax "recoverable on restitutionary grounds" within the meaning of section 2(1) of the *Recovery of Imposts Act*. Further, the Court considered whether claims "recoverable on restitutionary grounds" were confined to common law claims, as opposed to statutory claims, and the significance of extrinsic materials in construing the Act. Finally, the Court had to decide whether a claim for a credit for overpaid rates, rather than a refund, amounted to a claim to "recover" those overpaid rates.

The Court of Appeal reasoned that the phrase "recoverable on restitutionary grounds" was not confined to common law claims and could encompass statutory claims. It held that the claim for a credit was a claim to recover the overpaid rates, and therefore fell within the ambit of section 2(1) of the *Recovery of Imposts Act*. The Court also found that the extrinsic materials did not support a narrower construction of the provision. Accordingly, Mangoola's claims were out of time.

In both appeals, the Court ordered that the appeals be dismissed with costs.