New Delhi, Jan. 20 -- NEW DELHI: The global agreement aimed at setting a minimum level of corporate taxation is facing fresh tests.

Earlier this month, the US secured a carveout from the Organisation of Economic Cooperation and Development (OECD)-backed global minimum tax framework, allowing its largest companies to rely on domestic tax rules instead of the proposed 15% minimum rate.

The carveout, agreed under a framework endorsed by more than 140 countries, means Washington's own tax rules will be treated as sufficient for US-based multinationals. While the move does not undo the broader agreement, it has raised questions about consistency across countries and whether the global consensus against tax avoidance could weaken over time, r...