When the Bond Market Talked Back: The 2022 UK Gilt Crisis

After unfunded tax cuts sent gilt yields soaring and triggered a pension-fund collateral crunch, the Bank of England intervened with temporary gilt purchases and the government reversed the cuts. A real-world case of how the bond market answers when a government tries to hold rates down.

Updated Oct 13, 2026

Why does the bond market demand higher yields when a government announces more spending?
Verified facts

An Unfunded Tax-Cut Announcement and the Immediate Market Reaction

On 23 September (month 9) 2022, Chancellor Kwasi Kwarteng unveiled the Growth Plan alongside tax cuts that would reduce revenues by around £450 hundred million in 2026/27. According to a House of Commons Library briefing, the mini-budget set out neither a wider plan for the public finances nor forecasts from the Office for Budget Responsibility (OBR). Markets reacted negatively, with investors demanding higher yields for lending to the government, and in its 28 September (month 9) statement the Bank of England named the significant repricing of UK assets and dysfunction in the long-dated gilt market as a risk to financial stability.

Sources [1][2]
Verified facts

A Pension-Fund Collateral Loop That Amplified the Selling

According to the Bank of England's 10 October (month 10) announcement, the intervention was designed to buy LDI (liability-driven investment) funds time to build resilience against long-dated gilt volatility. As rising yields triggered collateral calls, LDI funds had to sell gilts to raise cash, and those sales pushed yields higher still. The Bank offered to buy up to £400 hundred million across 8 auctions, actually purchasing around £50 hundred million, while its temporary holdings peaked at £193 hundred million (£121 hundred million conventional long-dated and £72 hundred million index-linked) before being fully unwound on 12 January (month 1) 2023.

Sources [3][4]
Interpretation

A Government Pressing Rates Down, a Market Marking Them Up

What the market demanded was not a verdict on tax cuts themselves but a funding plan. The announcement of more spending without forecasts or funding was answered with selling, and the Bank of England's temporary purchases acted as a firebreak in the LDI loop without restoring fiscal credibility on their own. It ended with the Chancellor replaced on 14 October (month 10) and most of the tax cuts reversed by 17 October (month 10), as the government accepted the market's price through policy reversal. The lesson of this case is that central-bank buying can buy time but cannot hold demanded yields down for good until fiscal credibility is restored.

Sources [1][2]
Limitations

The US Is Not the UK

The UK is not a reserve-currency issuer, and the gilt market is far smaller than the US Treasury market, so the same shock moves yields more. The direct trigger of the 2022 crisis was leverage in LDI structures peculiar to the UK, which does not mean the US harbors the same loop. This case is therefore a reference for how markets price a government's fiscal announcements, not a direct prophecy for the US Treasury market.

Sources

  1. Background to Autumn Statement 2022 (House of Commons Library)Accessed Oct 13, 2026
  2. Bank of England announces gilt market operationAccessed Oct 13, 2026
  3. Bank of England announces additional measures to support market functioningAccessed Oct 13, 2026
  4. Report on the Bank's official market operations 2022-23Accessed Oct 13, 2026