New US corporate tax rate plan viewed as 'more tweak than transformation' 

US floats idea of a global minimum corporate tax rate of 'at least 15%' 

US treasury secretary Janet Yellen has argued for an ambitious effort to end a global “race to the bottom” on company taxes.

A perceived softening in the US stance on global corporate tax has been cautiously welcomed in Ireland, but is being viewed as more of a "tweak" than any real "transformation".

What it, ultimately, could mean for the security of Ireland’s 12.5% corporate tax rate remains unclear.