Business Gas vs Domestic Gas: What’s the Difference?

Are you paying more for gas than you should?
Many UK homes and businesses unknowingly choose the wrong gas tariff—costing them hundreds every year. Here’s what you must know about business gas vs domestic gas.

Choosing the right gas supply is important for both homes and businesses in the UK. Many people don’t realise the difference between business gas and domestic gas, which can impact pricing, contracts, and VAT rates. Domestic gas is designed for household use, offering simpler tariffs and lower VAT, making it more affordable for everyday living.

On the other hand, business gas is tailored for commercial properties and usually comes with higher rates, detailed contracts, and stricter usage rules. Understanding these differences helps businesses manage energy costs effectively, while households can ensure they are on the correct gas plan and avoid unnecessary charges.

What Is Business Gas?

Business gas is a commercial energy supply designed for non-residential premises. This includes offices, warehouses, restaurants, retail stores, manufacturing facilities, and any other property used for commercial purposes.

How Business Gas Works

Business gas is supplied through the same national grid as domestic gas, but it’s billed, metered, and contracted differently. Suppliers offer tailored rates based on consumption levels, and businesses typically negotiate their contracts directly with an energy provider or through a broker.

Unlike domestic customers, businesses don’t benefit from the same level of regulatory protection. This means pricing and contract terms can vary significantly between suppliers, which makes it especially important to shop around.

Who Needs a Business Gas Supply?

Any organization operating from a non-residential property should be on a business gas supply. This includes:

• Limited companies and sole traders with commercial premises
• Landlords supplying gas to commercial tenants
• Charities, schools, and non-profit organizations with physical premises
• Mixed-use properties where gas is used primarily for business purposes

What Is Domestic Gas?

Domestic gas is the natural gas supplied specifically for household use. It is mainly used for heating, cooking, and hot water in homes. The supply is delivered through meters installed in residential properties and billed under simple and straightforward tariffs.

Domestic gas is designed to meet the typical energy needs of a household rather than large commercial or industrial properties. It provides a reliable and convenient way for homeowners to manage their daily energy consumption efficiently.

How Domestic Gas Is Used in Homes

For most households, gas is the primary source of heating and hot water. Usage tends to spike in winter and drop in summer, and suppliers factor in these seasonal patterns when setting tariff rates.

Who Qualifies for Domestic Gas Tariffs?

Domestic tariffs are available to individuals living in residential properties—houses, flats, and apartments included. These tariffs come with strong consumer protections enforced by the energy regulator, Ofgem, including price caps that limit how much suppliers can charge per unit.

Key Differences Between Business Gas and Domestic Gas

Understanding how these two supply types differ can help you choose the right option and avoid unnecessary costs.

Purpose of Use

The most obvious distinction is what the gas is used for. Domestic gas powers residential homes. Business gas covers everything else—from heating a café kitchen to running industrial equipment.

Billing and Pricing Structure

Domestic customers are billed based on a standard unit rate and a daily standing charge. Business customers, on the other hand, often negotiate custom pricing based on their annual consumption. Larger businesses typically have more bargaining power and can secure better rates.

Contract Flexibility

Domestic customers can usually switch suppliers or change tariffs with relatively short notice. Businesses tend to be locked into longer-term contracts, often ranging from one to five years. Breaking a business gas contract early can come with significant penalties.

Business Gas vs Domestic Gas Prices

Pricing is one of the biggest differentiators between the two supply types—and it’s not always as straightforward as you’d expect.

To understand how businesses are classified for gas plans, including micro and small businesses, check out our article on micro vs small business gas.

Why Business Gas Prices Are Different

Business gas isn’t subject to the same Ofgem price cap that protects domestic customers. This leaves commercial rates more exposed to market fluctuations. During periods of high wholesale energy prices, businesses can see their costs rise sharply—especially if they’re on variable-rate contracts.

That said, businesses that consume large volumes of gas often pay a lower unit rate than domestic customers, because they can negotiate in bulk.

Factors That Affect Business Gas Rates

Several variables influence what a business pays for gas:

• Annual consumption: Higher-volume users often access lower unit rates
• Contract length: Longer contracts can lock in favorable rates, but remove flexibility
• Market timing: Signing a contract when wholesale prices are low can save significantly
• Location: Network distribution costs vary by region
• Credit rating: Suppliers may charge more if a business has a poor credit history

Metering Differences Between Business and Domestic Gas

Gas meters aren’t one-size-fits-all. The type of meter a property uses depends largely on how much gas it consumes.

Types of Gas Meters for Businesses

Businesses with higher consumption levels are typically fitted with industrial or commercial meters. These are designed to handle larger volumes of gas and are read more frequently. Some larger business sites use Automated Meter Reading (AMR) technology, which sends usage data directly to the supplier—eliminating the need for manual readings.

Gas Meters Commonly Used in Homes

Most homes use a standard credit meter or, increasingly, a smart meter. Smart meters automatically transmit readings to the supplier and can display real-time usage data, helping households manage their consumption more actively.

VAT on Business Gas vs Domestic Gas

In the UK, VAT on gas depends on whether it is used for domestic or business purposes. Domestic customers usually pay a lower VAT rate, while most businesses are charged the standard rate.

VAT Rates for Domestic Gas

Domestic gas is normally charged at a reduced VAT rate of 5%. This lower rate applies to most households because gas is essential for heating, cooking, and daily living. The reduced VAT helps keep energy bills more affordable for residential customers.

VAT Rates for Business Gas

Business gas is usually charged at the standard VAT rate of 20% in the UK. This rate applies to most businesses that use gas for commercial activities. However, some small businesses or organisations such as charities may qualify for a reduced VAT rate of 5% if they meet certain conditions.

Standing Charge and Unit Rate

The standing charge and unit rate are two key components of energy bills that affect your total gas cost. The standing charge is a fixed daily cost that covers the maintenance of your meter and gas supply, while the unit rate is the cost applied to your actual gas consumption.

Domestic Gas:

• Standing Charge: Around 25p–40p per day
• Unit Rate: Around 4p–7p per kWh

Business Gas:

• Standing Charge: Usually 50p–100p per day (depending on the supplier and property size)
• Unit Rate: Around 5p–12p per kWh (depending on usage and contract type)

The difference exists because businesses generally use more gas and commercial contracts often include additional charges compared to domestic supplies.

Contract Terms for Business Gas vs Domestic Gas

The contractual landscape looks very different depending on which side of the supply fence you’re on.

Fixed Contracts for Businesses

Business energy contracts are almost always fixed-term agreements. These can run anywhere from one to five years and typically include a fixed unit rate for the duration. While this protects against price rises, it can also mean missing out if market rates drop.

Most business contracts require notice periods of 30 to 90 days before renewal. Miss this window, and you could be rolled onto a more expensive out-of-contract rate automatically.

Standard Tariffs for Domestic Customers

Domestic customers have more options. They can choose between fixed-rate tariffs (which lock in a unit rate for a set period), variable-rate tariffs (which move with the market), or standard variable tariffs (the default if no active choice is made). Consumer protections mean domestic customers can exit most contracts without heavy penalties.

Can a Business Use Domestic Gas Supply?

This is a question that comes up more often than you’d think—especially for small business owners operating from home or running micro-enterprises from a residential address.

Situations Where Domestic Gas May Be Used

A sole trader working from a home office, for example, may not need a separate commercial gas supply. If the business activity is low-energy and takes place in a residential property, using the existing domestic supply is often perfectly acceptable.

Similarly, a small home-based food business operating a standard domestic kitchen may not require a commercial meter.

Legal and Supplier Requirements

The key issue is transparency. Using a domestic supply for heavy commercial activity—without notifying your supplier—can breach your contract terms. Some suppliers explicitly prohibit using domestic tariffs for commercial purposes, and non-compliance can result in penalties or forced contract changes.

If you’re unsure, contact your supplier and explain your situation. Most are happy to advise on the most appropriate supply type for your usage.

How Businesses Can Reduce Gas Costs

Energy costs are a significant overhead for many businesses. The good news is that there are several practical ways to bring them down.

Comparing Business Gas Suppliers

The commercial energy market is competitive. Regularly comparing suppliers—ideally 60 to 90 days before your contract expires—gives you the best chance of securing a favorable rate. Using an independent broker or price comparison service can streamline this process significantly.

Don’t assume your current supplier will offer the best renewal rate. Loyalty rarely pays in the energy market.

Improving Energy Efficiency

Reducing consumption is just as effective as reducing unit rates. Businesses can cut gas usage by:

• Installing programmable thermostats and zone controls
• Upgrading to modern, energy-efficient boilers
• Insulating pipes, walls, and roofing to reduce heat loss
• Conducting regular energy audits to identify waste

Some businesses may also be eligible for government-backed energy efficiency schemes, which can offset the cost of upgrades.

Conclusion

Understanding the difference between business gas and domestic gas is important for both households and companies. Business gas usually comes with different pricing structures, contract terms, and a higher VAT rate compared to domestic gas. Domestic gas, on the other hand, is designed for household use and benefits from lower VAT and simpler tariffs. By knowing these differences, businesses can choose the right supplier and tariff to better manage their energy costs, while households can ensure they are receiving the correct type of gas supply.

FAQs About the Difference Between Business Gas and Domestic Gas

Here are some common questions people ask about the difference between business gas and domestic gas.