Boris Johnson’s tax cut would benefit richest 10% most, say experts

Plan would cost 9bn and endanger promise to end austerity, according to IFS

Britain's foremost tax and spending thinktank has said that Boris Johnson's promise to cut taxes for millions of higher earners would cost 9bn and benefit the richest 10% of households in Britain most.

The Institute for Fiscal Studies (IFS) said the proposal by the frontrunner in the Conservative leadership race was expensive and potentially incompatible with the Tories' promise to end austerity and safely manage the public finances.