UK CPI: Can Inflation Reach the 2% Target by December 2026?

The UK inflation forecast will be settled by one official number: the annual Consumer Prices Index (CPI) rate for December 2026. The Office for National Statistics (ONS), which publishes the UK Consumer Price Inflation bulletin, is expected to release that reading in January 2027. If annual CPI is 2.0% or lower, the answer is YES; if it is higher, the answer is NO.

That threshold matters well beyond economic headlines. Inflation shapes how far household budgets stretch at the supermarket, how workers and employers approach pay talks, and how the Bank of England judges interest-rate policy. The Bank’s monetary-policy framework is built around a 2% inflation target, but reaching it in one month would not by itself guarantee that prices feel affordable again.

The December 2026 CPI reading decides the forecast

• Will annual UK CPI inflation be 2.0% or lower in December 2026?
• Deadline: The result is determined when the ONS publishes its January 2027 inflation bulletin.
• YES outcome: December 2026 annual CPI is 2.0% or below.
• NO outcome: December 2026 annual CPI is above 2.0%.
• Deciding publication: The ONS Consumer Price Inflation bulletin.

The key point is the annual CPI rate, not whether prices rose or fell during December alone. Annual CPI compares the overall price level in December 2026 with the level in December 2025. It is the published 12-month percentage change that determines this outcome.

Read also: Bank of England rate cut: mortgage stakes on 17 September

Why the 2% threshold matters to household budgets

The Bank of England’s 2% target is designed to keep price growth low and relatively stable over time. When inflation runs above that rate, everyday costs can rise faster than household income, although the impact varies sharply according to spending patterns.

A family spending heavily on food, rent, transport or energy may feel a different inflation rate from the headline CPI figure. CPI is a broad national measure, built from a basket of goods and services that aims to reflect average consumer spending. It is useful for showing the overall direction of prices, but it cannot perfectly describe every household’s experience.

The difference is especially important after a period of elevated price growth. Inflation returning to 2% would mean prices are rising at a slower annual pace. It would not mean prices have returned to where they were before earlier increases. A grocery bill, rent payment or service charge that has already gone up generally stays at its newer level unless prices actually fall.

Monthly price changes and annual inflation are not the same

A monthly price change measures movement from one month to the next. The annual CPI rate measures how prices compare with the same month a year earlier. Both matter, but they answer different questions.

For example, a small rise in prices during December could still coincide with annual inflation at or below 2% if prices were already high a year earlier. Equally, a fall in a single month would not automatically bring the annual rate to target if prices had increased substantially over the preceding 12 months.

That is why a single monthly headline should not be treated as a final signal for the December outcome. The year-on-year comparison, published by the ONS, is the figure that matters here.

The Bank of England will look beyond one target-sized reading

The Bank of England uses its inflation target to guide monetary policy, including decisions on Bank Rate. Lower and more predictable inflation can reduce the case for keeping borrowing costs restrictive, but rate-setters do not rely on one CPI number in isolation.

They also assess the forces that could keep inflation persistent, including wage growth, services prices, domestic demand, energy costs, exchange-rate moves and global supply disruptions. A December CPI result at 2.0% or lower would be significant, but the Bank would still consider whether inflation is likely to remain near target rather than merely touch it temporarily.

For borrowers, that means the relationship between CPI and mortgage costs is indirect. A target-level inflation reading may influence expectations for future rate decisions, yet lenders price mortgages using several factors, including market expectations and the length of the deal. Savers, renters and businesses can also experience the effects differently.

The path to a YES result

A YES result requires annual CPI inflation to print at 2.0% or below for December 2026. That could happen if price pressure eases across enough parts of the CPI basket and if major volatile categories do not push the headline rate back up late in the year.

Potential supports for a lower reading include more moderate growth in goods and services prices, easing energy-related pressure, or favourable comparisons with prices a year earlier. The size and timing of these effects matter. Inflation is calculated from a comparison with December 2025, so so-called base effects can influence the annual rate even when current monthly changes are modest.

A YES outcome would show that the published headline measure had returned to the Bank’s target or gone below it at year end. It would be an important benchmark for the UK economy, but it would not settle every question about the cost of living or the future course of interest rates.

The path to a NO result

A NO result follows if the ONS reports December 2026 annual CPI above 2.0%, even by a small margin. The forecast does not depend on whether inflation was close to target, whether core measures improved, or whether the Bank of England expected a later return to 2%.

The annual rate could remain above target if services inflation stays firm, wage and labour-cost pressures continue to feed through, energy or food prices rise, sterling weakness raises import costs, or international disruptions affect supply and shipping. None of those possibilities is certain, and their effect on headline CPI can change from month to month.

It is also possible for inflation to move around the 2% mark. A near-target reading earlier in 2026 would not answer the question, because only the December annual CPI figure qualifies. Similarly, a temporary fall below target before year end would not determine the result if the December rate later rises above it.

How to follow the figures without overreading them

Readers tracking this forecast should focus first on the ONS annual CPI headline, then on the categories helping to move it. The ONS bulletin provides the published CPI rate and accompanying explanation of price movements. The Bank of England’s inflation information explains why its target is 2% and how inflation relates to monetary policy.

Useful checks during 2026 include:

• The annual CPI rate, rather than only the monthly change.
• Food, energy, housing-related and services-price movements that affect household spending differently.
• Whether inflation changes are broad-based or driven by a small number of volatile categories.
• Bank of England decisions and forecasts, while remembering they are assessments rather than the final December result.

The next decisive check is the ONS January 2027 consumer price inflation publication. Its reported annual CPI rate for December 2026 will provide the public figure that settles whether UK inflation returned to the Bank of England’s 2% target by year end.

Source: Office for National Statistics