What Kwarteng is doing is straight out of the Libertarian playbook in the US (which is precisely were he learned it). None of this is new.
- By cutting taxes (mostly at the top) they create a large budgetary deficit
- Market prices in higher long-term risk for Sovereign Debt
- They now "have to" cut spending to reduce that risk as debt service payments are too costly.
How they cut spending is likely:
- Keeping public pay increases below inflation
(Real wages are then naturally eroded so spending goes down)
- They squeeze NHS further in real terms
- They squeeze education further in real terms
- It is very unlikely they will touch the triple lock as they need the grey vote. I expect them to keep them nice and happy with lots of extras.
The goal of (2) and (3) is to get more people to shift from public to private, thus the state spends less, and the costs are shifted to the individual (this is the classic libertarian viewpoint).
None of this is new. The last time they tried this in the US (Kansas) on a large scale it was an epic failure. But keep in mind that since it was a US State, it is still being backed by the financial power of the Federal Govt in the US.
What they are doing in the UK is a classic "Big Bang" Libertarian approach with NO SAFETY NET.
Thats they key here. No safety net.
When this goes sideways from an economic standpoint (which it will in 12 - 24 months), there is nobody there to backstop the whole country.
What will happen is that interest rates for our debt will shoot up (as we are now considered a risk by investors), leading to a sovereign credit downgrade for the UK.
That extra debt service cost for the UK will leave us crippled for a good 3-5 years, until we are able to bring tax revenue back up a bit relative to spending.
Thats what is waiting for the UK.