VAT and the Climate Change Levy on Business Energy: A Practical Guide

Business energy bills in the UK carry two separate taxes that don't appear at all on a typical household bill in the same form: VAT at the standard business rate, and the Climate Change Levy (CCL). Neither is a supplier fee — both go straight to HMRC — but they still affect what a business actually pays, so it's worth understanding both.

VAT on business energy is charged at the standard rate of 20%, higher than the 5% most people are used to seeing on domestic bills. There's an important exception: microbusinesses — broadly, those consuming under 33 kWh per day of electricity or 145 kWh per day of gas, or businesses that meet certain other low-usage criteria — qualify for the same reduced 5% VAT rate as domestic customers. If your business has low, steady consumption (a small office or shop, for example), it's worth checking with your supplier whether you're being correctly classified, since this isn't always applied automatically.

There's also a temporary relief worth knowing about: from 1 October 2026 to 31 March 2027, VAT on qualifying electricity supplies — the same microbusiness usage bands that already qualify for the 5% reduced rate — drops to 0%. This applies to electricity only; gas keeps the 5% reduced rate over the same period. It's a time-limited measure, so it's worth checking your bills during that window to confirm the relief has actually been applied if you qualify.

The Climate Change Levy is a separate environmental tax, charged per kWh alongside your unit rate, intended to encourage energy efficiency in business and industry. From 1 April 2026, the CCL rate is 0.801p per kWh for both electricity and gas — previously the two fuels were taxed at different rates, with gas historically sitting lower, but the rates have now been equalised.

Energy-intensive businesses operating under a Climate Change Agreement (CCA) — a voluntary scheme run in partnership with the Environment Agency for sectors that meet specific efficiency targets — can claim a substantial discount on CCL: up to 90% off the electricity rate and 86% off the gas rate. This isn't automatic; it requires being part of a recognised CCA sector scheme, so it's most relevant to manufacturing, processing, and other energy-intensive operations rather than a typical office or retail business.

If none of the above sounds like it applies to your business, the practical advice is simple: check your most recent bill line by line. VAT and CCL are itemised separately from the unit rate and standing charge, so you can confirm exactly what rate you're being charged and whether any relief you might be entitled to has actually been applied.