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Business gas is quietly one of the easiest overheads to overpay on. The market is deregulated, prices move fast, and the rate you pay depends heavily on when you last agreed a deal rather than on any published tariff. This guide explains how business gas is priced, what a fair rate looks like in 2026, how the meters and contracts work, and how to compare suppliers properly so you are not paying more than you need to.
In short. Business gas is a unit rate per kWh plus a daily standing charge. Small firms pay around 7.2p per kWh on a two year fix, with standing charges of roughly 25p to 45p a day. Contracts are fixed term, so you switch in a renewal window, and doing nothing lands you on expensive default rates.
Every gas quote is built from two numbers, and suppliers are quietly hoping you only look at one of them. The unit rate is what you pay per kWh of gas you use. The standing charge is a fixed daily fee for keeping the supply connected, charged whatever your usage.
In early 2026 small businesses pay around 7.2p per kWh on a two year gas contract, with most fixed rates sitting in a 6.5p to 9.0p range depending on size and meter. Standing charges run from about 25p to 45p a day. Larger users tend to get lower unit rates but face higher standing charges, so a rate that looks cheap for a big site can be poor value for a small one. Always weigh the two numbers together against your actual annual consumption, which you will find on a recent bill in kWh.
Gas meters fall into two groups, and which you have changes how you are billed and priced.
Non daily metered, or NDM. The standard meter for most small businesses. Readings are estimated between manual reads and reconciled periodically, so keeping your supplier updated with actual readings matters.
Daily metered, or DM. Applies to larger sites, usually those using more than roughly 73,200 kWh a year. The meter is read remotely every day, and pricing is more bespoke because the supplier has a precise picture of your usage.
Knowing which meter you have, and having your meter point reference to hand, lets suppliers price accurately rather than estimate, which usually means a keener and more reliable quote.
Gas is more exposed to the wholesale market than almost any other overhead. Prices eased from the 2022 peak but remain well above pre crisis levels, and they can shift noticeably within days. That is why the timing of your renewal genuinely matters. A good quote can expire quickly, and a rate that looked fair last month may not be available today. It also means there is no single right answer on when to fix, only the right call for the market in front of you.
Fixed term. A locked unit rate for one to five years. Your rate cannot change during the term, which makes budgeting predictable. This is what most businesses want.
Variable. The rate tracks the market up or down. You benefit if prices fall but carry the risk if they rise, and for most small firms that uncertainty is not worth it.
Deemed or out of contract. The default rate when no contract is in place, for example after moving into premises or letting a deal lapse. These are the most expensive rates you can pay, sometimes far above a fixed deal, so the priority is always to be on a contract you actually chose.
A cheap headline rate is only part of the picture. Run every quote past the same checklist rather than chasing the lowest number.
✓ Unit rate and standing charge shown clearly, and compared together.
✓ A contract length that suits your plans and your view of the market.
✓ A quote based on your real usage in kWh, not a rough guess.
✓ Clear exit terms and any early termination fees.
✗ Estimated consumption that looks nothing like your bills.
✗ A rate that expires unless you sign on the spot.
Switching business gas is straightforward, and the supply is never interrupted, because the pipes and meter stay exactly the same. Only the company that bills you changes.
1. Gather your details. A recent bill, your annual usage in kWh, your meter reference and your contract end date.
2. Compare quotes for the same usage and the same contract length, so you are comparing like for like.
3. Agree the new deal inside your renewal window and sign.
4. The new supplier arranges the switch, which typically completes within a few weeks. A supplier can object if you owe money on the old account, so clear any balance first.
Never let a gas contract lapse into deemed rates. Diarise your renewal window the day you sign, and line up the next deal before the old one ends, because you can often agree a new contract to start up to a year in advance.
Business gas carries two costs that home users do not face in the same way. VAT is usually charged at 20 percent, though some very low usage businesses and charities qualify for a reduced 5 percent rate, which is worth checking. The Climate Change Levy also applies to the gas your business uses and appears as a separate line. Neither is negotiable, but knowing they are there helps you read a quote properly and compare fairly, because a quote quoted excluding these costs will look cheaper than one that includes them.
Imagine a small business using 40,000 kWh of gas a year. At a fixed 7.2p that is around 2,880 pounds in unit costs. Left to lapse onto a deemed rate well above that, the same usage can cost noticeably more, before the higher default standing charge is even added. The gap appears with no dramatic warning, which is exactly why a diarised renewal is the simplest money saver in business gas.
In early 2026 small firms pay around 7.2p per kWh on a two year fix, with standing charges of 25p to 45p a day. Your own rate depends on usage, meter type, location and the deal you agreed.
Usually not. Fixed term contracts lock you in, and you switch during your renewal window. Leaving early typically means exit fees, if it is allowed at all.
No. The pipes and meter are unchanged and no engineer visit is needed. Only the company that bills you changes.
Most fixed deals run from one to five years. Longer terms give price certainty, shorter ones keep you flexible if you expect prices to fall.
No. You can compare directly using your bills. A broker can save time, but always understand how they are paid so you can judge whether the deal is genuinely the best one for you.