PETROLIAM NASIONAL BERHAD (PETRONAS) v KETUA PENGARAH HASIL DALAM NEGERI

Case Significance

Illustrates petroleum income-tax appeal practice under the Petroleum (Income Tax) Act 1967: additional assessments are tested first before the Special Commissioners of Income Tax and then on questions of law in the appellate courts, with the year-of-assessment and preceding-year-basis rules determining how petroleum income is brought to charge.

This Court of Appeal decision concerns a petroleum income-tax dispute between Petroliam Nasional Berhad (PETRONAS) and the Ketua Pengarah Hasil Dalam Negeri (the Director General of Inland Revenue), arising from notices of additional assessment issued under the Petroleum (Income Tax) Act 1967. The matter reached the appellate courts by way of the statutory appeal route from a decision of the Special Commissioners of Income Tax, and it turns on the correct basis for computing petroleum income tax for a year of assessment.

The additional assessments were embodied in Form JA for the year of assessment 2010, expressed on both a preceding-year basis ("PYB") and a current-year basis ("CYB"). The core question was one of statutory construction under the Petroleum (Income Tax) Act 1967: how income for a given year of assessment is to be brought to charge, and in particular the operation of the preceding-year basis in fixing the year of assessment to which particular petroleum income is attributed. Disputes of this kind commonly turn on whether the Director General correctly identified the year of assessment and applied the statutory timing rules when raising an additional assessment.

Because the case came up from the Special Commissioners of Income Tax — the specialist tribunal that first hears such disputes — the appellate court's role was to review the correctness in law of that tribunal's decision on the year-of-assessment and preceding-year-basis questions, rather than to conduct a fresh fact-finding exercise. The characterisation of the assessments as PYB and CYB assessments framed the issue of which basis governed the 2010 charge.

The judgment is a useful illustration of petroleum income-tax appeal practice in Malaysia: additional assessments under the Petroleum (Income Tax) Act 1967 are tested first before the Special Commissioners of Income Tax and then, on questions of law, in the appellate courts, with the year-of-assessment and preceding-year-basis rules determining how petroleum income is brought to charge. The individual parties are institutional, and both PETRONAS and the Director General of Inland Revenue are named accordingly.