It’s not entirely obvious at first glance, as Kwarteng appears to have been sacked for agreeing with the Prime Minister; he set out in his ‘mini budget’ a slate of fiscal policies which Truss herself had promised during her leadership campaign. Reading between the lines, however, we can glean a little insight.
The Government’s Explanation
The explanation - such as it is - was alluded to in Liz Truss’s brief press conference after the sacking/resignation took place.
Today I have asked Jeremy Hunt to become the new Chancellor.
He is one of the most experienced and widely respected government ministers and parliamentarians.
And later on;
I have acted decisively today because my priority is ensuring our country’s economic stability.
It’s not explicitly spelled out, but Kwarteng appears to have been sacked because the deep friendship between him and Truss is seen as having contributed to the mini-budget mess, and the consequent market instability.
Most of the policies announced in the mini-budget had long been telegraphed by Truss in the Conservative Party leadership debates; scrapping the planned corporation tax increases, scrapping the Health and Social care levy, and so on. This, therefore, should have been priced into the gilt and foreign exchange markets before their official announcement by the Chancellor. What hadn’t been proposed was the abolition of the top rate of income tax. This policy in particular, therefore, was seen as having had the largest contribution to the market instability.
Quite apart from the economic effects of the policy, it had such an effect because - as Truss later revealed - it was not even discussed with Cabinet members before being announced by Kwarteng. It showed to markets that Truss & Kwarteng’s friendship was capable of introducing radical policy changes without the relative safeguards of Cabinet scrutiny. Along with a few other MPs, Truss and Kwarteng co-authored the book ‘Britannia Unchained’, which proposes radical free market economic policies, and it seemed that this was the first step in this direction.
It now appears to be hoped that Kwarteng’s replacement with Jeremy Hunt, who endorsed Rishi Sunak in the leadership race after being knocked out himself, will be seen as an olive branch not only to financial markets - as Hunt is seen as more experienced, and as more of a safe pair of hands than Kwarteng - but also to Truss’s party, as Hunt will become only the second Sunak supporter in her Cabinet. During his brief leadership bid, Hunt supported a corporation tax cut beyond even that suggested in the mini-budget, so it's possible Truss regards him as a fellow free market economist without Kwarteng's baggage from the last few weeks.