VAT on your energy bill: what you need to know

VAT on your energy bill: what you need to know

The Value Added Tax (VAT) applied to your energy bill can often be a source of confusion for many households. While most goods and services in the UK are subject to a standard 20% VAT rate, domestic energy supplies typically benefit from a reduced rate of 5%. This guide will demystify how VAT affects your gas and electricity bills, clarify eligibility for the reduced rate, and outline the steps to ensure you are being charged correctly. Understanding these details empowers you to manage your energy costs effectively.

Fuse Energy empowers you with clear billing and real-time data to understand and manage your domestic energy costs. Our bills include VAT, and you can easily access them via the app. Our 24/7 human customer support is always available to assist with any billing queries, including questions about VAT charges. Click here to switch to Fuse Energy today.

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What is VAT on your energy bill?

The basics of Value Added tax

VAT is a consumption tax levied on most goods and services sold in the United Kingdom. HM Revenue & Customs (HMRC) administers and collects this tax. The standard VAT rate in the UK is 20%.

Why is VAT charged on energy?

Energy, like most other goods and services, is subject to VAT as a contribution to government revenue. However, recognising energy as an essential household utility, the government applies a reduced VAT rate to domestic supplies to support households.

Understanding VAT rates for domestic energy

The standard 20% rate

The standard VAT rate of 20% applies to most non-domestic energy supplies, such as those for commercial businesses. It can also apply in certain circumstances to domestic supplies that do not meet the reduced rate criteria.

The reduced 5% rate for homes

Domestic energy supplies in the UK typically qualify for a reduced VAT rate of 5%. This lower rate is a long-standing government policy aimed at making energy more affordable for households.

How the rates apply to gas and electricity

Both domestic gas and electricity supplies are eligible for the reduced 5% VAT rate, provided they meet the criteria for domestic use. This means that whether you are heating your home with gas or powering it with electricity, the same reduced VAT rate should apply to your bill.

Eligibility for the reduced VAT rate

Domestic use criteria

To qualify for the reduced 5% VAT rate, your energy supply must be for domestic use. This generally means the energy is supplied to a home or dwelling for residential purposes. Energy suppliers are legally responsible for applying the correct VAT rate to customer bills.

Mixed-use properties and the de minimis rule

For properties that have both domestic and commercial uses (for example, a shop with a flat above it), the "de minimis" rule may apply. If the domestic use accounts for 60% or more of the total energy supplied, the entire supply can be charged at the reduced 5% rate. If domestic use is less than 60%, the supply is typically split, with the domestic portion at 5% and the commercial portion at 20%. In some cases, the entire supply may be charged at 20% if the domestic portion is very small.

When 20% VAT might apply to domestic customers

Even for domestic customers, there are situations where the 20% VAT rate might be applied. This can happen if:

  • Your energy supplier incorrectly classifies your property as commercial.
  • Your energy consumption exceeds certain thresholds for what is considered "small-scale" domestic use.
  • You have a mixed-use property that does not meet the de minimis rule for predominantly domestic use.

Impact of VAT on your energy bills

Calculating the difference

The difference between 5% and 20% VAT can significantly impact your energy costs. For every £100 of energy consumed, you would pay £5 in VAT at the reduced rate, compared to £20 at the standard rate - a difference of £15. Understanding your energy consumption is key to managing costs, whether you are considering the running cost of an air source heat pump or simply tracking your daily usage.

Real-world examples of VAT charges

Consider an average UK home that uses around 2,500 kWh of electricity and 9,500 kWh of gas per year.

How much VAT would an average home pay?

An average UK home using 2,500 kWh of electricity and 9,500 kWh of gas annually, with unit rates of 26.11p/kWh for electricity and 7.33p/kWh for gas (current price cap unit rates as of July 2026), would pay approximately £32.64 in VAT on electricity and £34.82 on gas at the 5% rate.

If this same household were incorrectly charged 20% VAT, their annual electricity VAT would jump to approximately £130.55, and gas VAT to around £139.27. This illustrates how crucial it is to ensure the correct VAT rate is applied to your bills. By understanding how VAT applies, you can better manage your household budget and explore ways to reduce consumption, perhaps by improving air source heat pump efficiency in your home.

How to check and challenge your VAT rate

Reviewing your energy bill

The first step is to carefully check your energy bill. Look for a line item detailing the VAT charge and the percentage applied. Your bill should clearly state whether you are being charged 5% or 20% VAT.

Contacting your energy supplier

If you suspect an incorrect VAT charge, contact your energy supplier immediately. Explain your situation and provide any evidence that confirms your property is a domestic dwelling. Energy suppliers are legally obliged to apply the correct VAT rate.

What to do if you are overcharged

If your supplier confirms you have been overcharged, they should adjust your account and refund any excess VAT paid. If you have difficulty resolving the issue with your supplier, you can seek advice from organisations like Citizens Advice or Ofgem.

Understanding the VAT on your energy bill is a simple yet powerful way to ensure you are paying correctly and managing your household budget effectively. Fuse Energy's commitment to transparent billing and 24/7 human customer support means you always have the tools and assistance to understand your charges, including VAT. Take control of your energy costs and ensure you are getting the reduced rate you are entitled to.

Published on 13 Jul 2026

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Disclaimer

For the avoidance of doubt, this article is provided for informational purposes only and is not intended to constitute legal or financial advice. The author and/or Fuse Energy shall not be responsible for any losses arising out of any reliance on the information contained herein.

VAT on your energy bill: what you need to know