Rising Government Bond Yields: Frequently Asked Questions

Rising government bond yields are putting renewed pressure on the eurozone and UK, as investors weigh persistent inflation, heavy debt issuance and widening fiscal strains.

While the eurozone’s increase in borrowing costs appears gradual rather than disorderly, markets are showing greater sensitivity to countries with weaker fiscal positions, particularly France.

In the UK, elevated gilt yields are sharpening scrutiny of the government’s fiscal plans ahead of the Autumn Budget 2026. These trends point to tighter financial conditions and a more selective sovereign risk environment across Europe.

What is the main takeaway?

S&P Global Market Intelligence expects eurozone government bond yields to continue rising gradually throughout the remainder of 2026, driven by persistent inflation concerns, higher global interest rates, large fiscal deficits and elevated bond issuance. Markets are also likely to differentiate more sharply between sovereign issuers, with countries facing weaker fiscal fundamentals or greater political uncertainty, notably France, likely to experience larger increases in borrowing costs than their peers.

How much have eurozone government bond yields risen?

European governments’ borrowing costs, as measured by 10-year government bond yields, reached multi-year highs during the third week of August, with the increase broad-based across countries. On Aug. 19, Germany’s 10-year bund yield reached 3.12%, its highest level since 2011, while French yields stood above 4% for the first time since 2008. Portuguese, Spanish and Irish 10-year government bond yields also climbed to their highest levels since 2023.

While yields are elevated by recent historical standards, the recent move is better characterized as a continuation of an existing upward trend rather than a sudden bond-market shock. The increase since the start of August has not been particularly large compared with earlier episodes this year, including the sharp rise immediately following the outbreak of the conflict in the Strait of Hormuz.

What is driving eurozone yields higher?

Several factors are contributing to higher bond yields in Europe. Some are global, including rising US borrowing costs, partly linked to strong investment demand associated with AI and concerns about larger US fiscal deficits. Higher US yields often spill over into European bond markets as investors reassess returns across countries and asset classes.

Domestic factors are also playing a role. The eurozone inflation outlook, particularly during the remainder of 2026 and in 2027, has become more challenging. Stronger-than-expected economic growth during the first half of the year, rising wholesale gas prices, drought conditions in parts of Europe and the expected impact of El Niño on food prices all suggest that inflationary pressures are likely to remain elevated over the coming months.

Are long-run inflation expectations the main cause?

Not entirely. Financial market data suggests that high inflation concerns are not the dominant explanation for the increase in long-term yields. German market-based inflation measures have risen since early July, but the increase has been concentrated in shorter maturities, while longer-dated measures remain broadly consistent with inflation returning close to the European Central Bank’s target over time.

The shape of the eurozone yield curve provides further evidence. Between early and late August, yields increased across most maturities at a relatively similar pace. If investors had become substantially more concerned about long-term inflation, longer-dated yields would typically have risen by considerably more than shorter-dated yields. This points instead to expectations of higher future policy rates and higher term premia as the main drivers.

What are term premia, and why are they rising?

Term premia are the additional compensation investors require for holding long-term bonds rather than rolling over short-term investments. They appear to be rising because governments in advanced economies are expected to keep issuing large volumes of debt, the European Central Bank is shrinking its balance sheet, and uncertainty around inflation, fiscal policy and geopolitical risks remains elevated.

What are bond spreads telling us?

Bond spreads — the gap between Germany’s 10-year bond yield and the yield on other eurozone government bonds — suggest that markets are not currently pricing a broad-based increase in sovereign risk across the eurozone. Spreads have remained relatively stable for most eurozone economies, and in some cases, including Spain and Ireland, remain below levels seen at the start of the year.

France is the clear exception. French 10-year yields have reached their highest levels in the available data, while the spread against German bunds has widened to almost 100 basis points, a level not seen since the eurozone debt crisis in 2012. France’s projected fiscal deficit of about 5.1% of GDP in 2026, elevated political uncertainty and a relatively high share of nonresident bondholders make its borrowing costs more sensitive to market concerns.

Why do higher government yields matter for the economy?

Higher government bond yields imply tighter financial conditions for the eurozone economy, even if the European Central Bank leaves its policy rate unchanged. Government bond yields serve as benchmarks for many forms of private-sector borrowing, including corporate bonds, mortgages and other long-term loans.

If the upward trend continues, firms refinancing existing debt or raising new funding will face higher overall borrowing costs. Sustained higher financing costs could weigh on business investment, hiring and expansion plans, while higher mortgage rates could reduce housing demand and dampen consumer spending.

What are the fiscal implications?

Higher borrowing costs gradually increase government interest payments as maturing debt is refinanced and new bonds are issued. Over time, higher interest costs can reduce the resources available for public spending, investment or tax reductions. For example, a sustained 10-basis-point increase in France’s borrowing costs would increase its interest bill by about €420 million in 2027.

What is the eurozone outlook?

Eurozone government bond yields are expected to remain on a modestly upward trajectory throughout the remainder of 2026. Still-elevated inflation, large fiscal deficits across several advanced economies and continued heavy government bond issuance are likely to keep term premia elevated.

Markets are also expected to become increasingly selective in their assessment of sovereign risk, with France appearing particularly exposed given its large deficit and elevated political uncertainty.

What is happening in the UK gilt market?

The UK faces acute financial pressures, highlighted by multi-year-high government borrowing costs. The yield on the 10-year gilt climbed to 5.21% on Sept. 1, the highest level since 2008, while the 30-year gilt yield increased to a 28-year high of 5.9%.

UK gilt yields are high because investors are demanding an extra premium to hold long-term UK government debt amid concerns about fiscal deficits, the Autumn Budget 2026 and increased government debt supply after the end of quantitative easing.

Why is the UK situation especially precarious?

The UK faces sizable fiscal shortfalls, uncertain growth prospects and a challenging inflation path, including vulnerability to high energy prices. UK policy rates were higher going into the crisis than in the eurozone, and headline inflation has also been higher than in both the eurozone and the US.

The continued climb in gilt yields is ill-timed, with the UK facing sizable net financial requirements in fiscal year 2026–27, estimated at 7.8% of nominal GDP.

How could higher borrowing costs affect UK fiscal headroom?

UK Chancellor of the Exchequer John Healey has announced that the Autumn Budget 2026 will take place on Oct. 28 and has pledged that it will be built on fiscal discipline. However, he faces difficult choices, with gilt markets wary of fiscal loosening. The government’s main fiscal rule is that the current budget, excluding capital spending, should be met by revenues by fiscal year 2028–29.

Moderate UK economic growth, the impact of the Middle East war, higher government borrowing costs and Prime Minister Andy Burnham’s cost-of-living support measures threaten to erode the estimated fiscal headroom by fiscal year 2029–30. Government debt interest payments are also expected to exceed £100 billion, or more than 3.0% of nominal GDP, in fiscal year 2026–27.

What options are available for the Autumn Budget 2026?

The revenue-raising options are limited because the prime minister has reiterated the government’s electoral commitment not to raise the main tax rates during this parliament. There is speculation about a new property tax, reflecting previous support from Burnham for shifting part of the tax burden away from income and toward wealth, property and land.

On the spending side, the budget is likely to attempt to reallocate spending across departments to limit the increase in total spending. The government could also delay a major commitment to raise defense spending to 3% of nominal GDP by fiscal year 2029–30 from its current 2.5%.

What is the UK outlook?

The UK’s acute financial pressures are likely to remain a key market focus. Healey will be under pressure to reinforce fiscal headroom by fiscal year 2029–30 to establish market credibility and avoid a repeat of the adverse market reaction that followed the September 2022 giveaway budget.

An Autumn Budget 2026 that fails to reinforce the government’s fiscal rules could prolong bearish conditions in the UK gilts market.

This article was published by S&P Global Market Intelligence and not by S&P Global Ratings, which is a separately managed division of S&P Global.