VAT on Business Energy: Who Qualifies for 5% and How to Reclaim It (2026)

Most UK businesses pay 20% VAT on their gas and electricity — but a large number qualify for the reduced 5% rate without knowing it. If your business uses relatively little energy, runs charitable or residential activities, or operates from mixed-use premises, you may be overpaying every single month. Better still, if you have been overcharged you can reclaim up to four years of the difference. This guide explains exactly who qualifies for 5% VAT on business energy in 2026, how to apply, and how to claim money back.

VAT on energy is one of the most commonly misunderstood parts of a business energy bill. Unlike domestic customers, who always pay 5%, businesses are charged 20% by default — and suppliers will not check whether you qualify for the reduced rate. The onus is entirely on you to declare it. That quirk means thousands of small businesses, charities, care homes and home-based companies quietly overpay year after year.

The two VAT rates on business energy

There are only two VAT rates that apply to business gas and electricity in the UK:

• 20% — the standard rate. Applied by default to all business energy supplies.
• 5% — the reduced rate. Applied when your usage is below the “de minimis” threshold, or when your energy is used wholly or mainly for domestic or charitable non-business purposes.

There is no zero rate and no exemption for energy — every business pays one of these two rates. The question is simply which one you should be on. And unlike most taxes, this one comes with a bonus: if you qualify for 5% VAT, you are also automatically excluded from the Climate Change Levy (CCL), which removes a second charge from your bill at the same time.

Who qualifies for 5% VAT on business energy?

1. Low usage — the “de minimis” rule

If your average daily consumption falls below HMRC’s de minimis thresholds, your supply is automatically treated as domestic and charged at 5% — no application needed in theory, although in practice you should check your bill, because suppliers don’t always apply it correctly. The thresholds are:

• Electricity: no more than 33 kWh per day (1,000 kWh per month / 12,000 kWh per year)
• Gas: no more than 145 kWh per day (4,397 kWh per month / approximately 52,764 kWh per year)

To put that in context: 33 kWh of electricity a day is comfortably more than a small office, hair salon, consultancy or village shop typically uses. A huge proportion of micro businesses sit under these thresholds. The test is applied per supply (per meter), so a business with several small sites may qualify at some premises and not others.

2. Domestic or residential use

If at least 60% of the energy on a supply is used for domestic purposes, the whole supply qualifies for 5% VAT. If domestic use is below 60%, you pay 5% on the domestic portion only. This catches far more situations than people expect:

• Care homes and residential nursing homes
• Student accommodation and boarding houses
• Holiday lets, caravan parks and self-catering accommodation
• Pubs, shops or offices with a flat above on the same meter
• Houses of multiple occupation (HMOs) and monasteries or similar residential institutions

3. Charitable non-business use

Registered charities (and some other non-profit bodies) qualify for the 5% rate on energy used for non-business charitable activities — for example, a community hall, a free advice centre or a place of worship. The same 60% rule applies: if 60%+ of usage is qualifying, the whole supply is reduced-rated. Energy used for trading activities (a charity shop, a paid-for café) remains standard-rated, so mixed-use charities often pay a blended rate based on a declared percentage split.

How to apply for the reduced rate

The reduced rate isn’t applied through HMRC — you declare it directly to your energy supplier using a VAT declaration form (sometimes called a VAT certificate of declaration). Every supplier has its own version; you can usually download it from their website or ask your account manager for it. On the form you’ll state:

• Your business and supply details (account number, MPAN or MPRN)
• The basis on which you qualify (de minimis, domestic use, or charitable non-business use)
• The percentage of qualifying use, where relevant

Submit one form per supplier — and remember to re-submit whenever you switch business energy supplier, because declarations do not transfer automatically. A surprising number of businesses get the rate corrected once, then lose it again at their next switch simply because no one filed a new declaration.

Reclaiming overpaid VAT — up to four years back

If you have been paying 20% when you should have been paying 5%, you can reclaim the difference for up to four years. The claim goes to your supplier (not HMRC) — typically alongside your VAT declaration form, with a covering note stating the period of the claim. The supplier recalculates the affected invoices and refunds or credits the difference.

The sums are bigger than they sound, because a successful claim usually removes the Climate Change Levy for the same period too. For a small business spending £400 a month on energy, four years of overpaid VAT plus CCL can add up to several thousand pounds. If part of your premises is residential — that flat above the shop — it is one of the easiest refunds your business will ever claim.

Can I reclaim the VAT I pay on energy through my VAT return?

If your business is VAT-registered and your energy is used for taxable business activities, then yes — VAT on energy is input tax and can be recovered through your normal VAT return in the usual way, whichever rate you pay. The reduced rate still matters even for fully VAT-registered businesses, though, for two reasons: it improves cash flow (you’re not financing the extra 15% between paying the bill and reclaiming it), and qualifying for 5% removes the CCL, which is not recoverable as input tax.

For businesses that are not VAT-registered, or are partially exempt (common for charities, care providers and financial services), the VAT on energy is a genuine cost — making the 5% rate worth real money every month.

Common mistakes to avoid

• Assuming the supplier checks for you. They don’t. The default is 20% and it stays there until you declare otherwise.
• Forgetting to re-declare after switching. Your VAT declaration dies with the old contract. File a new one with the new supplier on day one.
• Ignoring mixed use. If any part of your premises is lived in, calculate the domestic percentage — at 60%+ the whole supply drops to 5%.
• Over-declaring. The declaration is a legal statement. If your qualifying percentage is genuinely 40%, declare 40% — not 60% to tip the whole supply. Suppliers and HMRC can and do check.
• Missing the de minimis check on small sites. Multi-site businesses often have one or two low-usage meters (a storage unit, a small satellite office) that qualify even though the main site doesn’t.

VAT is only one line on the bill — check the rest too

If you’re scrutinising your energy bill for the VAT rate, it’s worth checking the bigger numbers at the same time. The unit rate and standing charge dwarf the VAT saving if you’re on the wrong contract — especially if you’ve drifted onto deemed out-of-contract rates, which typically run 30–80% above market price. Our guide to comparing business energy prices covers what good looks like in 2026, and our tariff types explainer shows which contract structure fits your business.

Or skip straight to the numbers: get a free business energy quote — we compare every major UK supplier in about 60 seconds, and we’ll flag a VAT or CCL saving if it looks like you qualify.

Frequently asked questions

What is the VAT rate on business electricity in 2026?

The standard rate is 20%. Businesses qualify for the reduced 5% rate if they use no more than 33 kWh of electricity per day on a supply, or if 60% or more of the energy is used for domestic or charitable non-business purposes.

Do small businesses pay VAT on energy?

Yes — every business pays VAT on energy. But many small businesses fall under the de minimis usage thresholds (33 kWh/day electricity, 145 kWh/day gas) and should be paying 5% rather than 20%. Check your bill: the VAT rate is shown on every invoice.

How do I change the VAT rate on my energy bill?

Complete your supplier’s VAT declaration form stating the basis on which you qualify, and submit it to the supplier directly. The change is applied from the declaration date, and you can claim a refund for up to four years of past overpayment.

Does the 5% VAT rate affect the Climate Change Levy?

Yes — supplies that qualify for the reduced 5% VAT rate are automatically excluded from the Climate Change Levy, removing both charges at once. See our full Climate Change Levy guide for current rates.

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