The Autumn Budget: what could it mean for the Pound?

The Chancellor will deliver the Autumn Budget on 28 October 2026, alongside updated economic and fiscal forecasts from the Office for Budget Responsibility. For sterling, the central question will be whether the government can strengthen the public finances without undermining growth.

Businesses will be assessing the implications for tax, investment and operating costs. Currency markets will also be scrutinising how the package is funded, how credible its assumptions are and what it means for UK interest rates.

A Budget can satisfy one of those audiences without reassuring the other.

What changes are being discussed?

Recent reporting points towards a cautious Budget, with some larger decisions potentially deferred until 2027. However, pressure on the public finances means further revenue-raising measures remain a possibility.

Measures under discussion include higher taxes on banks, changes to capital gains taxation and a lower threshold for the planned surcharge on high-value homes. A delay to fuel duty increases has also been reported. These are possibilities, not confirmed announcements.

The government has separately committed to greater local control over funding and an emphasis on fiscal discipline. The Budget should provide more detail on how those priorities translate into policy.

For businesses, the significance extends beyond individual tax rates. The timing and scope of changes will influence investment decisions, while uncertainty about further measures could continue to weigh on confidence.

The forecasts could matter as much as the announcements

The OBR's assessment will help determine whether the government's plans look achievable.

Particular attention will fall on growth, borrowing, debt interest and the margin available against the fiscal rules. Higher financing costs absorb money that could otherwise support spending or tax reductions. Weaker growth can put further pressure on revenues.

Recent analysis from Handelsbanken highlights squeezed fiscal headroom and the risk that another tax-raising Budget could damage business and consumer confidence. It also notes that pressure on government bond markets extends beyond the UK.

The challenge is therefore two-sided: raise enough revenue to reassure investors without weakening the economic activity needed to generate it.

What could support sterling, and what could weaken it?

Our assessment is that a credible funding package, realistic forecasts and convincing investment measures could support the pound by improving confidence in the UK outlook.

An outcome that leaves substantial funding questions unresolved could have the opposite effect. So could measures that markets judge particularly damaging to growth.

The reaction in government bonds will be revealing, but higher yields should not automatically be read as positive for sterling. Yields can rise because investors expect tighter monetary policy, or because they demand greater compensation for holding UK debt. Those developments carry very different implications for the currency.

A simultaneous rise in borrowing costs and fall in the pound would be a more concerning signal than higher yields alone.

The interest-rate implications

The Budget does not set Bank Rate, but it can influence the outlook facing the Bank of England.

A package that supports demand could sustain inflation pressure and expectations of higher rates. Tax rises or spending restraint could soften demand, potentially reducing those expectations. Changes to duties and household support can also affect inflation directly.

For sterling, the balance matters: any benefit from higher expected interest rates could be offset by weaker growth or concerns about fiscal credibility.

What to watch around Budget day

The most useful signals will be the OBR's revised forecasts, the funding behind new commitments and the response in both sterling and government bonds.

The first currency movement may not be the lasting one. Announcements will be compared with expectations, then reassessed as the detail emerges. Developments in the US and eurozone will also continue to influence GBP/USD and GBP/EUR.

For businesses with upcoming currency requirements, 28 October is a significant event to factor into existing payment and hedging decisions.

Speak to the Reciprocal team about how the Autumn Budget could affect your upcoming currency requirements.

Information checked as at 6 October 2026. Potential measures remain unconfirmed; currency implications are scenario analysis, not exchange-rate forecasts.