The binding legal principles established are:
1. Even where section 105 of the Tax Administration Act may not be directly implicated (in the absence of an assessment or decision under section 104), its purpose and the overall scheme of the TAA remain relevant considerations in determining whether declaratory relief is appropriate in tax matters.
2. Declaratory relief in tax disputes should be exceptional or unusual, and regarded as a reserve or occasional expedient. While not entirely precluded, applications for such relief will be rare and require exceptional circumstances.
3. A taxpayer seeking declaratory relief in a tax matter must demonstrate that the circumstances justify the exercise of the court's discretion, including showing genuine engagement with SARS, exhaustion of internal remedies where appropriate, and presentation of clear, uncontested facts where the dispute is truly one of pure legal interpretation.
4. The discretionary nature of declaratory relief requires consideration of factors including: utility of the remedy, whether it will settle the questions at issue between parties, whether internal remedies have been exhausted, whether alternative dispute resolution has been attempted, whether issues have crystallized, and whether the matter involves pure questions of law or mixed questions of law and fact.
5. Courts should discourage piecemeal litigation in tax matters and should not entertain applications that fragment the resolution of disputes or address hypothetical or prospective issues before they have crystallized.
6. An appeal lies against the substantive order made by a court, not against the reasons for judgment. Therefore, even if a court's reasoning is flawed, if the ultimate order is correct, an appellate court will not interfere.