UK Budget Reaction

Autumn Budget 2026: The case for keeping bond exposure and duration short

Key overview‎‎‎‎‎‎‎‎
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1. The OBR cut its 2027 growth forecast to 1.0% and raised inflation to 3.4%, keeping interest-rate uncertainty elevated.

2. That backdrop supports keeping bond duration shorter, limiting sensitivity to large moves in yields.

3. The Budget also preserves the £20,000 cash ISA allowance and changes the State Pension triple lock from 2030.
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Britain’s weaker growth outlook and persistent inflation put bond risk firmly in focus after the Budget. The OBR now forecasts UK growth of 1.0% in 2027, down from 1.6% in March, while its inflation forecast has risen to 3.4% from 2.0%. Attention now turns to the Bank of England’s 5 November interest-rate decision, with Bank Rate at 3.75%.

For advisers, inflation uncertainty reinforces the case for shorter duration fixed-income exposure leading to lower sensitivity to movements in bond yields. Bonds with shorter duration generally suffer smaller price falls when yields rise. The trade-off is smaller gains when yields fall, something a sharper economic slowdown could encourage.

That fits ebi’s existing positioning. Its globally diversified, investment grade bond allocation already tilts towards shorter duration, helping limit interest rate risk within portfolios’ protective assets. The emphasis remains on consistent portfolio construction, with higher bond yields also improving the returns available on new investment.

One factor to keep in mind is that the Debt Management Office is shifting issuance toward short and medium maturities, while reducing planned sales of longer-dated gilts. That could increase price pressure negatively at the short end of the yield curve.

In terms of overall allocation, a lighter bond exposure may also be appropriate for clients with long investment horizons, sufficient capacity for loss and a greater need for growth. If doing so, it’s worth remembering that replacing bonds with equities increases exposure to market falls and can make withdrawals harder to sustain. Advisers should review the balance against clients’ objectives and cash flow needs.

Among other budget announcements in what was a relatively light agenda, the proposed cash ISA limit cut has been cancelled, preserving access to the full £20,000 annual ISA allowance in cash. An incentive for first-time stocks and shares ISA investors is being explored. From April 2029, a First Time Buyer ISA is planned to replace the Lifetime ISA for new savers; existing holders can continue under current rules.

Further ahead, the Budget confirms the previously announced triple lock adjustment from April 2030. The basic and new State Pensions will rise by the higher of inflation or 2.5%, and by more where needed to preserve their April 2029 value relative to earnings. This replaces automatically matching of each year’s wage growth and is likely to produce smaller future increases over time. Advisers should revisit retirement projections that assume the original triple lock continues indefinitely.

ebi’s Perspective‎‎‎‎‎‎‎‎
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The Budget reinforces ebi’s existing approach. Our bond allocation is globally diversified, investment grade and tilted towards shorter duration, helping limit sensitivity to interest-rate moves.

For some investors, a lighter bond allocation may also be appropriate, depending on their time horizon, objectives and capacity for loss. The wider tax and pension changes are more relevant to planning than to strategic portfolio construction.
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Ed van der Walt, CFA – Assistant Portfolio Manager, ebi

Joshua Clarke, CFA – Portfolio Manager, ebi

Jonathan Griffiths, CFA – Head of Investment, ebi

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