Small business gas: prices and how to stop overpaying

Last updated: July 2026

A typical small business uses about 15,000 kWh of gas a year. At July 2026 one-year fixed rates of around 7.9p per kWh, that is roughly £1,185 a year on units, before the standing charge. Bionic puts a typical micro business at about £1,233 a year all in. Figures correct for July 2026, sources below.

Small firms are the customers suppliers count on not to look. You have a business to run, gas is one line in the accounts, and the renewal letter lands in your busiest week. This page gives you the numbers to check yours against, and the protections you already have but were never told about.

What a small business actually uses

Your annual usage in kWh is on your bill, usually on the back page. It decides which price band you sit in. A quote also needs your MPRN, the meter point reference number on the same bill; our MPRN guide shows where to find it.

A micro business uses 5,000 to 15,000 kWh of gas a year, on Bionic's figures. The small-business band runs from 10,000 to 50,000 kWh a year. AquaSwitch puts the typical small firm at about 15,000 kWh.

Where you land depends on what the gas does. If it only heats the place, as in most offices and small shops, you sit near the bottom of the band. If it cooks all day, as in a cafe or takeaway, you sit near the top. The exact number matters more than the archetype: every quote keys off it.

Small business gas prices in July 2026

A small business signing a one-year fixed deal in July 2026 pays around 7.9p per kWh for gas. Medium users (50,000 to 100,000 kWh a year) pay about 7.4p, and large users above 100,000 kWh about 7.2p. Those figures come from AquaSwitch and Business Energy Deals, both checked 22 July 2026. They are indicative, not quotes. Rates move daily and vary by region and meter. Your own quote also moves with wholesale prices on the day, the contract length you pick and your credit history.

Micro businesses pay more per unit. Bionic's July 2026 figures put a micro business at 10.9p per kWh with a 39.1p daily standing charge, about £1,233 a year at 10,000 kWh.

The direction of travel matters too. The small-band average gas rate is 7.12p per kWh in 2026 against 6.36p in 2025, a rise of 0.76p per kWh in a year. On top sits the Climate Change Levy at 0.801p per kWh, the HMRC rate in force from 1 April 2026, which most firms pay. VAT on business gas is 20%, though HMRC's reduced 5% rate covers many low-use micro firms; the tests are in our VAT guide.

Full rate tables by business size, refreshed monthly, live on our business gas prices page. The cheapest gas for your business is not a table figure. It is a quote against your meter, your usage and your contract end date.

Micro-business protections you probably don't know you have

If your firm has fewer than 10 employees and turnover or balance sheet of £2m or less, or uses no more than 293,000 kWh of gas a year, you count as a micro business under the criteria Ofgem uses. Most small firms reading this qualify. That status carries protections nobody mentions at sign-up.

Your supplier cannot roll you onto a new contract longer than 12 months. Under Ofgem rules in force since October 2022, as set out in Bionic's guide to them, the key contract terms including third-party costs must reach you in writing within 10 days of agreeing, and a renewal reminder must arrive around 60 days before your contract ends. You no longer need to give 30 days' termination notice, except on evergreen tariffs.

Brokers are covered too. Under Ofgem's rules, a broker serving micro and small businesses should be registered with a qualifying dispute settlement scheme, free for micro businesses to use since December 2022. If a dispute stalls, you can take it to the Energy Ombudsman at deadlock or after eight weeks. Ask any broker, including us, which scheme they belong to. A pause before the answer tells you plenty.

Two limits to know, plainly. Business energy contracts have no cooling-off period, even when agreed over the phone, so get every quote in writing before you say yes. And most suppliers will not let you switch before your contract end date, so the time to act is the renewal window, not after it closes.

The loyalty tax on small firms

Let a contract lapse and you move onto out-of-contract rates your supplier sets. The average published out-of-contract gas rate is 9.22p per kWh across 16 suppliers tracked by Purely Energy in July 2026, against the 7.9p fixed rate. On 15,000 kWh a year, that 1.32p gap costs £198 a year on units alone.

The standing charge is where it stings hardest for a small firm. Out-of-contract standing charges typically run two to four times the fixed-rate level. E.ON Next's published out-of-contract gas rate, for example, is 9.05p per kWh with a 149p daily standing charge from 1 April 2026. That £1.49 a day is £544 a year whether you use 10,000 kWh or 100,000. The smaller the business, the bigger the share of the bill it swallows.

If a renewal letter started all this, our business gas renewal page translates it. The full picture on out-of-contract pricing is in our deemed rates guide. And sometimes the honest answer is that your current deal is fine. If your renewal rate beats what we can find, we'll tell you to stay put.

Questions people ask us

How much is gas for a small business?: Around £1,185 a year on units for a typical small firm using 15,000 kWh, at July 2026 fixed rates of 7.9p per kWh, plus the standing charge. Bionic puts a typical micro business at about £1,233 a year all in. Your number depends on usage, region and contract date.
Do small businesses pay more for gas?: Per unit, yes. In July 2026 a micro business pays around 10.9p per kWh, against 7.9p for a small firm and 7.2p for a large user. Suppliers price smaller usage higher, which is why checking your rate matters more the smaller you are.
Is there a price cap for small business energy?: No. The Ofgem price cap covers domestic customers only. There is no price cap on business gas, which is why out-of-contract rates can sit wherever a supplier publishes them.
What counts as a micro business for energy?: Fewer than 10 employees with turnover or balance sheet of £2m or less, or annual gas use of 293,000 kWh or less, or annual electricity use of 100,000 kWh or less. Meeting any one test qualifies you, under the criteria the Energy Ombudsman applies.
Can I get business gas if I run my business from home?: Often, yes. Suppliers will put a home-based firm on a business contract if enough of your gas goes on the business, and each supplier sets its own test. Ask before you assume the domestic tariff is your only option.
Can a small business get green gas?: Yes. Most suppliers sell green tariffs backed by biomethane or carbon offsets, and British Gas offers carbon neutral and renewable gas plans to small firms. Expect a small premium over the standard fixed rate, and ask for both prices when you get a quote.

Sources: AquaSwitch business gas prices (checked 22 July 2026); Business Energy Deals business gas prices (July 2026); Bionic micro-business energy guide (July 2026); Purely Energy out-of-contract rates tracker (July 2026); Ofgem, Set up a business energy contract; Energy Ombudsman eligibility criteria; HMRC Climate Change Levy rates (from 1 April 2026). Full methodology: how we source our numbers.