Cheapest gas-only tariff in the UK this month (what to look for)
Gas-only deals can look cheaper than they really are if the standing charge is high or you’re not eligible. This guide shows how to find the lowest estimated gas price for your postcode and meter type, and when a gas-only tariff is (and isn’t) the right move.
- See what “cheapest” means in practice: unit rate + standing charge + eligibility
- Compare like-for-like using realistic UK usage examples (with numbers)
- Get a whole-of-market gas-only quote in minutes (no obligation)
Figures are estimated and vary by region, payment method, meter type and eligibility. Always check tariff terms, including exit fees and price change rules.
Fast answer: what’s the cheapest gas-only tariff this month?
There isn’t one single “cheapest gas-only tariff” for everyone in the UK. Gas prices vary by region, meter type (standard vs prepayment vs smart in credit), and payment method. Even within the same supplier, different tariffs can be cheaper depending on your annual gas use because the standing charge can outweigh a low unit rate.
Best way to find the cheapest for you: compare gas-only tariffs using your postcode and meter details, then rank by estimated annual cost (not unit rate alone). If you’re unsure, use typical annual consumption as a starting point and refine later.
Key takeaways (quick and practical)
“Cheapest” = total cost.
Unit rate matters, but a high standing charge can make a tariff more expensive for low gas users.
Eligibility changes the price.
Some deals require direct debit, online billing, or a smart meter. Always check the tariff summary.
Gas-only isn’t always best.
You might get a better combined outcome with dual fuel—especially if your electricity tariff is also high.
Compare gas-only tariffs for your home (whole-of-market)
Use the form to check the lowest estimated annual gas cost available to you this month. We’ll show gas-only tariffs across the market where available, then you can sort by total cost, standing charge, unit rate, and contract length.
What you’ll need (and why)
- Postcode
- Prices and standing charges differ by gas distribution region.
- Meter type (if you know it)
- Standard credit and prepayment tariffs are priced differently. Smart meters can unlock additional options.
- Estimated gas use
- Not sure? You can still compare—use typical UK examples below, then update with your bills later.
Tip: If your home has gas for heating but you’re rarely in (or you heat with a heat pump), pay extra attention to the standing charge. Low unit rate tariffs can still lose on total cost.
Two realistic examples (to show how “cheapest” changes)
Scenario A: Flat, low gas use
Assumptions: 6,000 kWh/year gas use (small flat, mild heating), paying by direct debit, standard credit meter.
Why: at low usage, the standing charge makes up a bigger share of the bill, so “cheapest unit rate” may not be cheapest overall.
Scenario B: House, higher gas use
Assumptions: 14,000 kWh/year gas use (typical heated home), paying by direct debit, standard credit meter.
Why: at higher usage, the unit rate dominates, so the cheaper unit rate often wins even with a higher standing charge.
These numbers are illustrative (not a market snapshot). Your actual results depend on local pricing, tariff availability, and your household’s consumption.
Get your gas-only quote
Tell us a few details and we’ll match you with gas-only options where available. If gas-only isn’t competitive for your area, we’ll tell you that too.
Before you submit: If you have a prepayment meter (top-up key/card) or you’re in a new-build with an embedded network, options can be more limited. We’ll highlight constraints in your results.
How to compare gas-only tariffs (without getting caught out)
When two tariffs both look “cheap”, the best one usually depends on your usage and how long you want price certainty. Use the table below as a quick decision guide, then check exact tariff terms in your quote.
Gas-only decision checklist
- Who it tends to suit: you already have a strong electricity deal elsewhere; you want to split suppliers; you’re comparing a like-for-like gas renewal.
- Who it often doesn’t suit: you want one bill; you’re currently on an expensive electricity tariff too; your supplier offers a better dual fuel bundle overall.
- Double-check: meter type (prepay/smart), payment method requirements, and whether the tariff is available in your region.
If you’re unsure, compare both routes
The most satisfying way to decide is to check:
- Cheapest gas-only options for your postcode
- Best dual fuel options (to see if electricity savings outweigh any gas-only advantage)
- Exit fees and contract terms on any fix
EnergyPlus can help you compare without assuming one approach is always best.
Costs, exclusions and common pitfalls (UK-specific)
Most “surprises” come from eligibility rules and standing charges. Here are the main gotchas to check before you switch.
Standing charge can dominate
If you use little gas (or you’re away a lot), a low unit rate won’t help much. Compare the estimated annual cost at your usage level.
Payment method restrictions
Some of the cheapest tariffs assume monthly direct debit and paperless billing. Paying on receipt of bill may cost more.
Prepayment availability varies
Not every supplier supports every prepay set-up. Smart prepay can open options, but compatibility depends on the meter and region.
Exit fees on fixed tariffs
If you might move, check whether the supplier lets you transfer the tariff to your new address—or charges for leaving early.
Different price rules on variable
Variable tariffs can change. Check how much notice is given and whether prices track the Ofgem cap or follow supplier discretion.
Embedded networks can block choice
Some flats have communal heating or an embedded network. You may not be able to choose a normal gas supplier for that supply.
Reminder: Under UK switching rules you generally get a 14-day cooling-off period for distance sales, but charges may apply for energy used. Always read the tariff summary and supplier T&Cs.
FAQs about the cheapest gas-only tariffs (UK)
Can I switch gas without switching electricity?
Yes. In the UK you can usually switch your gas supplier independently of your electricity supplier. Make sure your electricity tariff won’t change (for example, losing a dual fuel discount) and check whether either tariff has exit fees.
Why does my neighbour see different gas prices?
Even nearby homes can fall under different tariff availability due to supplier rules, meter type, payment method, and timing. But the biggest driver is often the regional standing charge and unit rates set for your gas distribution area.
Is a fixed gas-only tariff always cheaper?
Not always. Fixed tariffs can offer price certainty, but the unit rate and standing charge may be higher than a variable tariff at the time you switch. Also check exit fees if you want flexibility.
What if I’m on a prepayment gas meter?
You can still compare and switch, but options may be more limited, and the pricing can differ. If you have smart prepayment, more tariffs may be available. If you’re unsure which you have, your current supplier can confirm.
Do I need my MPRN to switch gas?
Usually no for a quote, but it can help with accuracy. Your Meter Point Reference Number (MPRN) is often on your gas bill. If you don’t have it, you can still start with postcode and address details.
How long does a gas-only switch take?
Timing varies, but many switches complete in a few days to a couple of weeks depending on the supplier and any checks required. Your gas supply shouldn’t be interrupted—your physical network stays the same.
What should I check in the tariff information label?
Look for: unit rate (p/kWh), standing charge (p/day), contract length, exit fees, payment method assumptions, and whether prices are fixed or variable. If anything is unclear, don’t proceed until it’s explained.
Could I lose protections by going gas-only?
Your consumer protections (billing accuracy, complaints routes, vulnerable customer support) come from the supplier and UK regulation, not from being dual fuel. But managing two suppliers means two sets of bills and customer service—factor that into your choice.
How we assess the “cheapest gas-only tariff” (methodology)
Our definition of “cheapest”
For this guide, “cheapest” means the lowest estimated annual cost for a gas-only tariff available to a household with a given postcode, meter type and payment method—calculated from the tariff’s unit rate and standing charge using an annual consumption assumption.
Assumptions we use (and how to improve accuracy)
- If you don’t provide usage, we may use typical domestic consumption examples (e.g. ~6,000 kWh for low use, ~14,000 kWh for medium use) to illustrate outcomes.
- We assume prices are shown including VAT at the domestic rate where applicable.
- We treat discounts/bonuses cautiously and focus on core tariff rates unless the discount is clearly defined and widely applicable.
Limitations: The “cheapest this month” can change quickly due to supplier repricing, eligibility rules, and regional differences. Always confirm today’s rates and terms before you proceed.
Transparency: editorial and review
Sources (UK)
- Ofgem (energy regulator) – information on price caps, consumer rights, and energy market rules
- Citizens Advice: Energy – independent guidance on switching, billing and complaints
- GOV.UK: Energy bills support and guidance – official updates on schemes and support
Ready to check the cheapest gas-only tariff for your postcode?
Get a personalised comparison using your meter details and usage. We’ll rank options by estimated annual cost and flag key terms like exit fees and eligibility.
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