How to Budget Around Ofgem's Quarterly Price Cap Changes

Since energy bills started changing every three months rather than twice a year, budgeting around them has become a genuinely different exercise. Ofgem confirmed the October cap on 26 August, and while the headline rise is modest, the detail underneath it matters more than usual this quarter. Here’s where things stand and how to build a budget that doesn’t get caught out.

How the price cap cycle works

Ofgem reviews and sets the price cap four times a year - covering January–March, April–June, July–September, and October–December - based primarily on wholesale energy costs. The cap limits what suppliers can charge per unit of gas and electricity (and the daily standing charge) for customers on standard variable tariffs; it doesn’t cap your total bill, which still depends on how much energy you actually use.

Each level is calculated from wholesale costs observed during a fixed assessment window that closes several weeks before the announcement, which is why forecasts firm up as the window fills.

Where the cap stands right now

For 1 October to 31 December 2026, the cap rises 4% to £1,723 a year for a typical dual-fuel household paying by Direct Debit - an increase of £60 a year, or roughly £5 a month, on the £1,663 that has applied since July. Ofgem attributes the rise to higher wholesale gas prices linked to the ongoing conflict in the Middle East, with wholesale costs up 11% over the past three months.

The rise is very unevenly distributed. Gas bills go up around 8%, while households that use no gas at all see an increase of less than 1%. If your heating is gas and your usage is winter-heavy, the 4% headline understates what you’ll actually feel.

The unit rates from 1 October (England, Scotland and Wales average, Direct Debit) are:

• Electricity: 26.32p per kWh, standing charge 54.83p per day
• Gas: 7.97p per kWh, standing charge 29.68p per day

Around 35% of households - about 11 million - are on fixed tariffs and won’t be affected by the cap change itself.

The VAT cut is doing a lot of work here, and it’s temporary

The government has removed VAT from domestic electricity bills for the six months from 1 October 2026 to 31 March 2027. Electricity is at 0% VAT for that window; gas stays at 5%.

Two things follow from this that matter for budgeting:

First, the 4% figure already includes the saving. Ofgem has said the cap would have been around £45 higher without it. So the underlying cost pressure is larger than the headline suggests.

Second, and more importantly: this is a six-month measure with an end date in your calendar. Unless it’s extended, VAT returns to electricity on 1 April 2027. If you set your Direct Debit based on winter bills that include the discount, you’re building in a cliff edge. Note it now rather than discovering it in the spring.

The VAT removal applies to fixed tariffs too, and suppliers apply it automatically - you don’t need to do anything to get it.

One reason the numbers look confusing right now

If you’re comparing this quarter’s figure against something you read last year, you may find the maths doesn’t work. Ofgem changed its definition of a “typical household” in July 2026, cutting the assumed annual consumption from 2,700 kWh of electricity and 11,500 kWh of gas to 2,500 kWh and 9,500 kWh, reflecting a genuine fall in household usage.

The same unit rates produce £1,723 under the new definition and £1,935 under the old one. Nothing about what you’ll pay changed - only the illustrative household used to express it. Compare unit rates and standing charges against your own usage rather than trusting the headline annual figure to be like-for-like across time.

Why a single fixed monthly budget figure is risky

If you’re on a standard variable tariff and budget from last quarter’s bill, you’re always working from a number that has a known expiry date. July’s 13% jump showed how far a single quarter can move - and Ofgem typically announces changes only about five weeks before they take effect, not months, so there isn’t much warning. This is particularly awkward if your income hasn’t risen at a similar pace (see our dedicated article on why lifestyle creep can quietly cancel out a pay rise before costs like this are even factored in).

Practical ways to budget around the uncertainty

• Build in a buffer rather than budgeting to the exact current rate. The cap has moved by more than 10% in a single quarter this year. Budgeting slightly above your current bill gives you room before you’re caught short.
• Diarise the announcement dates, not just the change dates. The January–March 2027 cap will be confirmed in late November, five weeks before it applies. That’s your window to react rather than absorb.
• Consider fixing if certainty matters to you. Ofgem notes fixed deals are currently available at £100 or more below the October cap, and forecasters expect a further rise in January. But a fix is a genuine trade-off: if the cap falls, you won’t benefit. Look for a deal without exit fees if you want to keep the decision reversible.
• Check your payment method. Prepayment customers pay the lowest cap rates - Ofgem puts the average saving at around £45 a year compared with Direct Debit.
• Use a sinking fund for seasonal swings. Winter usage is naturally higher regardless of the cap level, so smoothing across the year (see our dedicated article on the sinking fund method) avoids the same nasty surprise every winter quarter.
• Check eligibility for support schemes. The Warm Home Discount and other targeted support sit outside the price cap and are worth checking if your household is on a lower income. If you’re struggling, contact your supplier early - they’re obliged to help set up affordable repayment plans.

A word on standing charges

Combined standing charges come to about £308 a year from October (dual fuel, Direct Debit) - charged regardless of how much energy you use. The electricity standing charge actually fell slightly this quarter, but the principle holds: this is a fixed floor under your bill that cutting consumption won’t touch. It remains a persistent point of criticism from consumer campaigners, and Ofgem has previously floated (though delayed) plans requiring suppliers to offer a low-standing-charge option.

What’s coming next

The January–March 2027 cap is calculated from a window running to mid-November and will be announced in late November. Forecasts at this stage are early and will move - Cornwall Insight and supplier forecasting services currently point to a further rise, with estimates clustering somewhere between roughly £1,870 and £1,950, but the assessment window has barely opened and these figures will shift.

Treat any January number you see today as a direction of travel, not a planning figure.

The bottom line

October’s 4% rise is manageable in isolation. The things to actually plan around are that most of it lands on gas just as heating goes on, that the VAT cut flattering the figure expires on 31 March 2027, and that January is currently forecast to rise again. Build in a buffer, check your tariff options each quarter, and decide in advance whether predictability is worth more to you than the chance of catching a future cut.