British Gas tariffs: types, costs and how to compare
A UK-focused guide to British Gas tariff options (fixed, variable and smart) and how to compare them against the wider market—based on your meter, payment method and region.
- Understand what “fixed” vs “variable” really means under the Ofgem price cap
- See what can change your price: region, meter type, Direct Debit and standing charges
- Use our checklist and examples to decide whether to stay, switch or renegotiate
Estimates only. Tariffs, rates and availability vary by postcode, meter type and payment method. Switching usually takes around 5 working days, but timelines can differ.
Fast answer: which British Gas tariff is “best”?
There isn’t one “best” British Gas tariff for everyone. The right option depends on your postcode (regional network costs), payment method (e.g. Direct Debit vs pay on receipt of bill), meter type (standard vs smart vs economy tariffs), and how much energy you use.
Key takeaways
- Fixed tariffs lock in unit rates and standing charges for a set time (often with exit fees). They can help with budget certainty, but may be higher or lower than future prices.
- Variable tariffs can change. If it’s a standard variable tariff (SVT), it’s usually limited by the Ofgem price cap for customers on default tariffs.
- Two households on the same “named” tariff can still pay different rates due to region, meter configuration and payment method.
- When comparing, focus on estimated annual cost for your usage, not just unit rate.
Quick decision guide
- Consider a fixed tariff if…
- you want predictable pricing, you’re happy with a set term, and the exit fee (if any) won’t be a problem.
- Consider a capped/standard variable tariff if…
- you want flexibility, may move home soon, or want to avoid exit fees (rates can still change).
- Consider smart/time-of-use options if…
- you have a smart meter and can shift usage (e.g. EV charging, dishwasher) to cheaper times (where available).
Available tariffs from British Gas
Compare British Gas tariffs vs the market (and get a quote)
Use the form to compare British Gas with other UK suppliers. We’ll use your postcode and contact details to help match you to tariffs that fit your meter type and payment preferences.
What you’ll need
- Your postcode (this affects regional charges and available tariffs)
- Whether you have gas, electricity or both
- Your meter type (smart / standard / economy tariffs such as Economy 7)
- How you prefer to pay (Direct Debit is often the cheapest, but not always)
Get your energy quote
How to compare British Gas tariffs accurately
Comparing tariffs is easiest when you anchor everything to the same inputs. If you compare a tariff using the wrong meter type or payment method, the estimate can be misleading.
1) Confirm your meter setup
Standard, smart, Economy 7 (two rates), or prepayment. Your tariff options and rates can differ.
2) Match the payment method
Direct Debit prices can differ from pay on receipt of bill or prepayment pricing.
3) Use annual consumption
If you can, use your kWh usage from bills or your online account. It’s more accurate than “typical” usage.
4) Check exit fees & end dates
Some fixed tariffs have exit fees. You may be able to switch without fees near the end of your fixed term.
Common British Gas tariff types (what the names usually mean)
- Fixed: rates stay the same for the term; may include exit fees; good for budgeting.
- Standard Variable Tariff (SVT): default tariff; price can change; typically constrained by the Ofgem price cap (where applicable).
- Tracker / market-linked (if offered): changes with a reference (e.g. wholesale index) under stated rules; can rise and fall.
- Time-of-use / smart (where available): different rates at different times; requires a compatible smart meter setup.
Two realistic cost scenarios (with assumptions)
These examples show why unit rates alone can mislead. Figures are illustrative estimates using simple maths: annual cost ˜ (kWh × unit rate) + (standing charge × 365). Your actual tariff rates may be different.
Scenario A: low electricity use, standing charge matters
Assumptions: electricity 1,800 kWh/year; unit rate 26p/kWh; standing charge 60p/day.
Estimated annual electricity cost ˜ (1,800 × £0.26) + (365 × £0.60) = £468 + £219 = £687.
Insight: even if a tariff has a slightly lower unit rate, a higher standing charge can reduce the benefit for low users.
Scenario B: Economy 7 — off-peak split changes the outcome
Assumptions: electricity 3,600 kWh/year; 40% off-peak. Day rate 30p, night rate 16p; standing charge 55p/day.
Energy cost ˜ (2,160 × £0.30) + (1,440 × £0.16) = £648 + £230 = £878. Standing charge ˜ 365 × £0.55 = £201.
Estimated annual electricity cost ˜ £1,079.
Insight: if you can’t use enough off-peak power, Economy 7 can cost more than a single-rate tariff.
British Gas tariff options vs alternatives: what to compare
Use this table to compare features that often make the biggest difference to your total cost and flexibility.
| What you’re comparing | British Gas (typical pattern) | Other suppliers (whole-of-market) | Why it matters |
|---|---|---|---|
| Tariff type (fixed/variable/smart) | Often offers a mix; availability varies by region and meter | Wider choice; some specialise in fixed, green, or smart tariffs | Different risk/price certainty and eligibility rules |
| Unit rates & standing charges | Can be competitive or not depending on your area | Often vary more; some have lower standing charges, others lower unit rates | Your usage pattern determines which is better overall |
| Exit fees on fixed tariffs | Common on fixed deals (check contract summary) | Some have none; others are similar | Affects your ability to switch if prices change |
| Payment method (DD vs others) | Direct Debit often priced differently | Differences can be smaller or larger depending on supplier | Comparing the wrong payment method can mislead |
| Meter eligibility (smart / Economy 7 / prepay) | Not every tariff fits every meter type | Some suppliers have more flexible smart or prepay offerings | Wrong meter assumptions = wrong price estimate |
Checklist: who a British Gas tariff may suit
- You want one supplier for gas and electricity and a well-known brand experience.
- You value budget stability and can commit to a fixed term (if the deal is competitive).
- You have a smart meter and want to explore smart/time-based options (where available).
- You prefer managing your account online and can provide regular readings (or have a smart meter).
Checklist: who should compare carefully before committing
- You may move home soon (exit fees or admin steps could matter).
- You’re on Economy 7 but can’t shift usage off-peak—single-rate alternatives may work better.
- You’re low usage (standing charge differences can outweigh unit-rate savings).
- You prefer no exit fee and want flexibility if the market changes.
Costs, exclusions and common pitfalls (UK-specific)
These are the issues we most often see when people compare British Gas tariffs (or any supplier’s tariffs). Checking them upfront helps you avoid surprises.
1) Standing charge shock
If you use little energy (e.g. flat, single occupant), standing charges can make up a big chunk of the bill. Compare total annual cost, not just p/kWh.
2) Wrong meter assumptions
Economy tariffs (two-rate electricity) and prepayment need like-for-like comparisons. A “cheaper” unit rate might only apply to a different meter setup.
3) Exit fees & timing
Fixed tariffs may charge exit fees per fuel. If your fix is ending soon, check whether you can switch without a fee near the end of the term.
Direct Debit vs “cash/cheque” pricing
Some tariffs price differently depending on how you pay. If you switch payment method later, the price you pay may change too.
Bills vs monthly payments
A higher monthly Direct Debit doesn’t always mean a higher tariff—it may be catching up a balance or building credit for winter. Compare tariff rates separately from payment amount.
British Gas tariffs: FAQs
Is British Gas on the Ofgem price cap?
The Ofgem price cap applies to default/SVT tariffs (where applicable), limiting the maximum unit rates and standing charges suppliers can set for those tariffs. It doesn’t cap fixed deals, and your exact rates still vary by region and meter type.
What’s the difference between a fixed and variable tariff?
A fixed tariff keeps unit rates/standing charges the same for the term (often with exit fees). A variable tariff can change over time. Variable tariffs usually offer more flexibility, but less price certainty.
Can I switch away from British Gas if I’m in a fixed term?
Usually yes, but you may pay an exit fee (often per fuel). Check your contract summary and whether you’re close to the tariff end date, as switching rules around the final weeks can differ by supplier and contract.
Do British Gas tariffs differ by postcode?
Yes. Energy rates can vary by region because network costs and other factors differ across Great Britain. The same tariff name can have different unit rates/standing charges depending on your location.
Is it cheaper to have dual fuel with British Gas?
Not always. Some suppliers price competitively for dual fuel, others don’t. The best approach is to compare the combined annual estimate and also check whether separate suppliers for gas and electricity would be cheaper for your usage.
Do I need a smart meter for smart/time-of-use tariffs?
Typically yes. Time-of-use pricing usually requires a compatible smart meter setup so usage can be recorded by time period. Availability and rules vary by supplier and by property.
Will switching disrupt my gas or electricity supply?
In most cases, no. Switching is an administrative process. Your energy keeps flowing, and your meter usually stays the same. You’ll typically be asked for a meter reading around the switch date for accurate billing.
How do I find my current tariff and rates?
Check your latest bill or online account for your tariff name, unit rate(s) in p/kWh and standing charge in p/day. If you have Economy 7, you’ll usually see separate day and night rates.
Trust, methodology and sources
Page details
- Written by
- EnergyPlus Editorial Team
- Reviewed by
- Energy Specialist
- Last updated
- March 2026
How we assess British Gas tariffs (and any supplier)
Our aim is to help you make a like-for-like comparison rather than publish a single set of “rates”. We focus on the factors that most affect UK household bills.
- Inputs that change prices: region (postcode), payment method, meter type (single-rate, Economy 7, prepay), and consumption (kWh/year).
- What we compare: unit rates, standing charges, tariff term length, exit fees, and eligibility requirements (e.g. smart meter needed).
- How scenarios are calculated: simple annual estimate = (kWh × unit rate) + (standing charge × 365). These are illustrative and exclude discounts/credits unless specified.
- Limitations: suppliers can change tariffs, prices and availability; “best” depends on personal circumstances; smart/time-of-use savings depend heavily on when you use energy.
Ready to compare British Gas against the wider market?
Get a personalised comparison using your postcode and details. You’ll see options that match your meter and payment method.
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