Understanding VAT on Business Energy

This guide covers how VAT on business energy actually works: who pays the standard rate, who qualifies for the reduced rate, how the Climate Change Levy fits in, and what to do if you think you're being charged incorrectly.

What VAT Rate Applies to Business Energy Bills?

There are two rates in play:

Standard Rate: 20%

This is the default for business gas and electricity, and it's what most commercial premises in the UK pay.

Reduced Rate: 5%

This applies where your business qualifies as a low-usage site, works partly or wholly from a domestic property, or is a charity using energy for non-business activity.

There's no VAT exemption for business energy itself. What exists is a set of conditions under which HM Revenue & Customs treats your business energy as if it were domestic, which unlocks the 5% rate. Get the classification right, and the saving is significant. Get it wrong (in either direction) and you risk some headaches later.

Why is the Default Business Energy VAT Rate 20%?

Domestic energy (the gas and electricity supplied to a household) has always been subject to the reduced 5% rate. Business energy doesn't get that treatment automatically, because HMRC assumes that non-domestic premises use more energy and can absorb the standard rate.

The reduced rate for businesses only kicks in when specific conditions bring your supply back into ‘qualifying use’, which HMRC defines in VAT Notice 701/19: fuel and power.

Qualifying use covers three situations:

1. Domestic use (including residential accommodation like care homes and student halls)

2. Charity non-business use

3. Low-usage business premises (where consumption is below HMRC's ‘de minimis’ threshold)

Use our free business energy calculator tool to calculate your approximate energy consumption.

What is De Minimis, and Could You Qualify?

This is the one most small businesses miss. If your premises use a small enough amount of energy, HMRC treats the whole supply as domestic, regardless of what your business actually does there. You don't need to be a charity, and you don't need to work from home. You just need to use less than the threshold.

The thresholds are as follows:

If your usage sits below these figures, your supplier should apply 5% VAT automatically, based on your meter readings. HMRC doesn't require a certificate for de minimis supplies, so in theory there's nothing for you to submit. In practice, however, energy suppliers sometimes miss the switch, particularly for businesses whose usage has reduced over time. It's worth checking your last few bills against these numbers rather than assuming your supplier is on the ball.

Small shops, single-person offices, kiosks, workshops with light equipment use, and seasonal or part-time premises are the types of companies that frequently fall under de minimis.

Does Working From Home Change What VAT You Pay?

Often, yes. If you run your company from a residential address, the energy supply to that address is domestic, and the entire bill is subject to 5% VAT by default, because your energy supplier bills the property, not the business inside it.

This creates a common misconception worth clearing up directly: working from home does not mean you can claim a VAT refund on your energy costs as an input cost.

Because the supply is already treated as domestic and charged at 5%, there's no VAT to recover through your VAT return. What you can do instead is claim a proportion of your home energy costs as a business expense through your Self Assessment or your company accounts, using either simplified flat-rate allowances or a calculated percentage based on room use and hours worked. But that's an income tax matter, completely separate from the VAT topic.

Are Charities and Non-Profits Charged Less VAT?

Yes, but the rules are more specific than just ‘charities pay less VAT’. A charity's normal business activities don't actually get any special energy VAT treatment. What does qualify is energy used for the charity's non-business activity, such as free welfare services, community support, or activities funded by grants and donations rather than fees.

To claim this, you give your energy supplier a declaration confirming what percentage of your energy use is for non-business activity. This isn't automatic like the de minimis rule; it requires you to actively notify your supplier and provide an estimate, usually based on floor space or hours of use.

Two crucial points that often trip UK charities up:

1. Being a registered charity isn't enough (HMRC assesses the activity, not the organisation's status. A community sports club, for example, doesn't qualify for this relief.)

2. You must actively submit a declaration (Unlike de minimis, HMRC will not infer your qualifying percentage. Suppliers won't accept vague statements; they need your actual estimated percentage.)

What is the 60% Rule for Mixed Use?

Where a site has both qualifying use (domestic, or charity non-business) and non-qualifying use (ordinary commercial activity) at the same meter, HMRC applies a threshold test:

1. 60% or more qualifying use (the entire supply is charged at 5%)

2. Below 60% qualifying use (the qualifying percentage charged at 5% and the remainder at 20%)

This is why the percentage you declare matters. Rounding up to claim the full 100% relief when your actual qualifying use is 55% isn't a shortcut. HMRC will reverse their decision, sometimes with backdated corrections.

How Does the Climate Change Levy Affect VAT?

The Climate Change Levy (CCL) is a separate environmental tax charged on business energy, on top of VAT. It's collected by your energy supplier and passed to HMRC. It should appear as its own line on your energy bill.

From April 2026, the main CCL rates are:

Electricity and gas were brought in line with each other in April 2024. Before that, gas was charged at a lower rate. Both are due to rise again to £0.00827 per kWh from April 2027.

Here's the part worth knowing: if your supply qualifies for the 5% reduced VAT rate (through de minimis, domestic use, or charity non-business use), it's also automatically excluded from CCL. The two reliefs are tied together. So a small office that qualifies for 5% VAT under de minimis isn't paying the CCL line at all, which is a second saving on top of the VAT difference.

Businesses with high energy use in energy-intensive sectors like manufacturing can also apply for a Climate Change Agreement (CCA) with the Environment Agency, which cuts the CCL rate substantially (currently around 92% off for electricity and 89% off for gas) in exchange for meeting efficiency targets. That's a route for the heaviest of energy users, not typically for a standard office or retail location.

What Happens if the Domestic VAT Rate Changes?

The UK Government confirmed in July 2026 that VAT on domestic electricity bills would drop from 5% to 0% from October 2026. For businesses, there are two key points in the detail:

1. It's electricity only (gas stays on the existing reduced rate for qualifying use)

2. It only touches supplies classed as domestic (If your business pays 20% VAT on electricity, this change doesn't reach you)

Where this does matter for UK businesses is anyone already benefiting from the 5% reduced rate on electricity: home-based businesses billed on a residential supply, premises qualifying under the de minimis rule, and the qualifying (non-business) portion of a charity's electricity use. All of these currently sit at 5%, as of July 2026, because they're treated as domestic use, so a cut to that rate should carry through to them for the duration of the measure.

The Government's own announcement specifically flags qualifying small businesses, charities, and care homes as beneficiaries alongside households.

How to Apply for a Reduced Rate of VAT

It depends which route applies to you.

De Minimis (Low Consumption)

Nothing to submit. Your supplier should apply 5% automatically based on meter readings. If your bill still shows 20% and your usage is below the threshold, contact your supplier directly and ask them to correct it.

Domestic Supply (WFH)

Usually automatic, since the property itself is billed as a residential address. If you're being charged 20% at a residential premises, query it with your supplier.

Charity or Mixed Use

You need to complete a VAT declaration for your energy supplier, stating your qualifying percentage. Keep a copy for your records, along with whatever evidence you used to calculate the split.

What To Do if You’ve Been Overcharged VAT on Energy

If you discover your business has been paying 20% when it should have been paying 5%, or paying the CCL when it should have been exempt, you can claim it back.

1. Contact your supplier and explain which qualifying route applies (de minimis, domestic, or charitable non-business use).

2. Provide supporting evidence such as recent bills showing usage, confirmation of your business type, or proof the property is residential.

3. Ask for a refund of the overpaid VAT and CCL.

4. Confirm the corrected rate in writing so future bills are right.

Business energy suppliers can typically go back up to four years, in line with HMRC's standard cap on VAT corrections. If your supplier refused to take action despite clear evidence and ample opportunity, escalate through their formal complaints process, and if that doesn't resolve it, the Energy Ombudsman is the next step.

Common Misconceptions About VAT on Business Energy

"Small businesses get a reduced rate"

Size isn't the qualifying factor; usage is. A one-person consultancy in a large serviced office using 2,000 kWh a month pays the standard rate. Whereas a five-person workshop using 900 kWh a month qualifies for de minimis. What matters is consumption at the meter, not the company’s headcount or turnover.

"If you work from home, you can claim VAT as a business cost"

A domestic supply is already at the lower 5% rate, so there's nothing to reclaim through VAT. The saving shows up in your income tax situation instead, through a business-use expense claim.

"Registered charities get a reduced rate"

Not as a rule. The relief applies to non-business activity specifically. A charity that charges fees for services in a way that counts as trading may not qualify at all for that portion of its energy use, regardless of its charitable status.

"If most of your use qualifies, you should declare 100%"

Only true at 60% or above. Below that, HMRC expects an honest apportionment, not a round-up. Overstating it is one of the more common reasons suppliers get asked to reverse a declaration on review.

Examples of VAT Rates Charged on Business Energy

To make this clearer, here's how the same monthly usage plays out under different classifications, using the 2026-27 CCL main rate:

A 15,000 kWh business paying the standard rate is paying VAT on its energy cost plus the CCL line. The same business, if it qualified for de minimis instead, would drop both charges entirely, not just the VAT.

FAQs About VAT on Business Energy

Can I choose to pay 5% VAT even if I don't qualify?

No. VAT treatment isn't optional or negotiable; it depends on your actual usage and activity. Declaring a qualifying percentage you can't support is what gets reversed on inspection.

Does a reduced VAT rate apply to renewable energy?

No, VAT and CCL rates are based on your usage and qualifying status, not on whether your supplier sources the energy from renewables.

Do landlords or property managers have to do anything?

If you supply energy to tenants (for example, in a serviced office or managed building), you may need to consider your own VAT position separately, since you become the supplier for VAT purposes. This is a more complex area and worth discussing with an accountant if it applies to you.

What happens if my consumption changes during the year?

Each meter's VAT status is assessed on an ongoing basis. If your usage grows beyond the de minimis threshold, or a charity's non-business proportion changes, you're responsible for telling your supplier. Failing to update your declaration can lead to underpaid VAT and potential penalties later.

Does moving business premises affect VAT on energy?

Yes. VAT qualification is assessed per meter, not per business. A new site, a new meter, or a change of premises means a fresh assessment, even if nothing else about your company has changed.

The Bottom Line on Business Energy VAT

Most businesses are correctly paying 20% VAT on their energy. But it's worth five minutes checking your last few bills against the de minimis thresholds, particularly if your usage has dropped, if you work from home, or if you run a charity with a meaningful non-business activity.

If you do qualify and you're not on the reduced rate, you can usually claim back up to four years of overpaid VAT, plus the Climate Change Levy that should never have applied.