Electricity bill VAT cut starts today — what it means for home upgrades

VAT on household electricity bills has been cut from today, according to gov.uk. The change keeps the Ofgem price cap around £45 a year lower than it would otherwise have been between October and December, as global energy costs push prices up this winter.

What the government announced

Gov.uk says the move is one of several "everyday fixes" from the Prime Minister, alongside capping bus fares at £2 from January and cutting business rates for pubs, social clubs and live music venues. Around a third of households are on fixed tariffs and so aren't directly affected by the price cap change, but the government says it expects suppliers to pass the VAT cut on to them too.

Longer term, gov.uk points to a new publicly owned body, Great British Grid, plus the Sizewell C nuclear project and the Warm Homes Plan as the mechanisms meant to bring UK energy costs closer to the rest of Europe over the next decade. The announcement follows £150 taken off bills in last year's Budget and an expanded Warm Home Discount.

What £45 a year actually buys

It's worth being clear-eyed about the scale here: £45 a year is a modest saving on a bill that's still high by historical standards, and it only runs for one quarter. For most households, the bigger and more lasting lever on energy costs is how much energy the home uses in the first place — insulation, heating system and generation.

That's where our cost model is useful, because the gap between "basic" and "well-specified" on these projects is usually bigger than £45 a year, but so is the long-run saving.

Heat pumps. An air source heat pump typically costs £12,900 installed in the UK, against a range of £10,000 – £16,700. Two things make this cheaper than the headline price suggests right now: the Boiler Upgrade Scheme still takes £7,500 off an MCS-certified installation in England and Wales (Scotland has a separate £7,500 Home Energy Scotland grant, plus an optional interest-free loan), and 0% VAT applies to installing energy-saving materials like heat pumps, insulation, solar panels and batteries until 31 March 2027. See our Air source heat pump for the full breakdown.

Solar PV. With the same 0% VAT relief, a 6 kWp solar array typically runs £12,500, or £9,750 – £16,200 depending on panel quality and whether you add a battery. A 10 kWh battery adds roughly the difference between £9,500 and £15,500 — worth weighing against how much of your usage falls outside daylight hours.

External wall insulation. This is the biggest-ticket efficiency upgrade in our model, at £26,000 typical for a mid-size house (£20,300 – £33,900), also 0% VAT until March 2027. It's a bigger commitment than the other options here, but it cuts heat loss on an ongoing basis rather than just shifting where the energy comes from.

Boiler replacement. Not every home is ready for a heat pump, and a modern condensing combi boiler, around £2,800, still beats an old, inefficient one on running costs. See New boiler for options including smart controls, which Boiler Plus rules require as standard on new gas combi installations.

The practical takeaway

The VAT cut announced today is real but small, and it's temporary relief rather than a fix for the underlying cost of energy. If you're weighing whether to spend this winter's savings on energy bills versus putting money into an upgrade, the 0% VAT window on heat pumps, insulation, solar and batteries runs out at the end of March 2027 — that's the deadline that matters more than this quarter's price cap change.

Before signing off on any of these projects, it's worth checking your quote against typical local costs — our "is my quote fair" tool compares what you've been quoted with labour and materials pricing for your area, so you're not relying on a single installer's number.