What the Electricity VAT Cut Would Have Saved Me

The government's VAT cut on electricity runs for exactly six months — 1 October to the end of March — and only on electricity, not gas. A typical household keeps hearing one figure: £45. So I ran the cut against my own bills for the equivalent six months last winter, and got a very different number.

£11.95. That's the entire 5% VAT sitting inside my electricity bill from October to March, the window the cut actually covers. Split it out and it's £7.06 off the units I used and £4.88 off the standing charge. Twelve quid, near enough, for half a year.

The six-month numbers

£11.95	VAT the six-month cut removes from my bill
£7.06 + £4.88	split: units + standing charge
£250.85	my electricity across the six months (inc 5% VAT)
£45	the government's headline — a full-year figure, not this cut

Policy: domestic electricity VAT cut from 5% to 0%, 1 Oct 2026 – 31 Mar 2027. The £45 is the full-year VAT on a typical electricity bill, not this six-month cut — and wholesale costs are forecast to nudge the cap up again on 1 October, softening the benefit. My figures are the 5% VAT already inside my Octopus electricity bills for Oct–Mar.

And that £45 everyone quotes isn't a six-month number at all — it's the full-year VAT on a typical household's electricity, and this cut only runs half the year. Even a normal home won't see £45 from it; nearer £25 over the winter it applies to. Mine's £12 because the bill was already tiny before the tax came off.

That's the theme I keep circling back to. VAT is a percentage, and a percentage of a small bill is a small saving. The battery, solar and Agile planner had already flattened my winter electricity to about £250 across those six months — so there wasn't much of a bill left for a 5% cut to work on.

And £4.88 of even that £12 is VAT on the standing charge — the fixed daily fee I pay whether I generate my own power or not. So the cut leans hardest on the one part of the bill the kit can't reach.

There's a sting in the tail the headlines skate over, too. Wholesale costs are pushing the price cap up on the same 1 October the VAT comes off, and forecasts for the rise have swung about — from roughly flat to as much as 5%, with the latest estimates nearer 2% once the VAT cut is counted in. Ofgem confirms the actual figure in late August.

So for most households the cut mostly cushions a rise rather than landing as cash. For me it's simpler: £12 is £12, it's welcome, and it barely moves a bill the kit already took care of.