The High Court ruled that the Revenue Commissioners must refund €9,136,776.59 to a taxpayer whose appeal against a tax assessment succeeded, even though Revenue had asked the court to review the Appeal Commissioners’ decision on a point of law.
Mr Justice Gilligan delivered the judgment on 18 March 2005. The plaintiff had invested in a Cook Islands limited partnership and claimed capital allowances. Revenue had disallowed the claim, but the Appeal Commissioners determined on 29 October 2004 that the statutory “ring fencing” restriction did not apply. The determination meant the plaintiff could set off partnership capital allowances and interest payments against his income.
Revenue sought a case stated for the High Court’s opinion. It argued that the taxpayer was not entitled to repayment until that process concluded. The plaintiff sought the refund under the tax legislation or, alternatively, under general legal principles. The parties did not dispute the amount claimed.
The court found that the legislation did not itself provide a statutory basis for repayment while Revenue’s case stated was pending. It also rejected Revenue’s contention that the legislation required any overpayment to remain with Revenue until the appeal process was exhausted. The judge said the relevant provisions did not exclude a right to repayment.
Relying on the common law principle against unjust enrichment, including the approach approved in *O’Rourke v The Revenue Commissioners*, the judge concluded that the Appeal Commissioners’ determination meant the plaintiff had paid money for which there was no legal basis. He held that Revenue was bound by that determination while its case stated was pending and that the legislation did not provide a stay on repayment.
The court found the plaintiff entitled, as a matter of general principle, to a refund of the amount claimed. The judgment also stated that if Revenue ultimately succeeded in its case stated, it could recover any sums found to be properly due. The ruling determined the repayment issue before the court; it did not determine the outcome of Revenue’s separate case stated.