The 2022 Mini-Budget Crisis

How unfunded tax cuts announced in September 2022 caused bond yields to spike, pension funds to wobble and a prime minister to resign, and what it shows about market credibility.

In September 2022, the new government of Liz Truss announced a “mini-budget” with large unfunded tax cuts.

Market reaction

Gilt (UK government bond) yields jumped sharply.
The pound fell to a record low near 1.03 dollars.
Mortgage lenders withdrew products as rates rose.

Pension fund crisis

Many pension funds used liability-driven investment (LDI) strategies with borrowed money. As gilt prices fell, they faced margin calls and had to sell gilts, pushing prices down further. The Bank of England intervened by buying gilts to stabilise markets.

Political fallout

The finance minister was sacked, and most tax cuts were reversed.
Truss resigned after about 50 days, the shortest term of any UK prime minister.

Lessons

Fiscal credibility matters: markets punish plans that seem unsustainable.
Independent fiscal watchdogs like the OBR were bypassed, adding to doubts.
Hidden leverage in finance can amplify shocks.

The mortgage shock

A family planning to buy a home found their mortgage offer withdrawn days after the mini-budget, as lenders repriced for higher interest rates.

Thinking big economies can borrow without limits

Even the UK faced a market revolt over unfunded tax cuts.

Key takeaways

The September 2022 mini-budget announced unfunded tax cuts.
Gilt yields spiked and the pound hit a record low.
Pension funds' LDI strategies forced the Bank to intervene.
Truss resigned after about 50 days.