Cheapest gas and electricity tariff in the UK right now
The “cheapest” tariff depends on your postcode, meter type and how you pay. This guide shows how to find today’s lowest estimated cost tariff for your home, with clear caveats and UK-specific detail.
- See what “cheapest” really means (unit rates, standing charges, and annual estimate)
- Understand fixed vs variable deals and when each can be best value
- Compare whole-of-market options and switch with confidence
Estimates vary by region, usage, meter type and supplier. Always check tariff terms, eligibility and any exit fees before you switch.
Fast answer: the cheapest tariff is the one with the lowest estimated annual cost for your postcode and usage
In the UK, there isn’t one single “cheapest gas and electricity tariff” for everyone at the same time. Prices differ by:
Where you live
Regional network costs change unit rates and standing charges. Your tariff’s “rate card” is set by your postcode region.
Your meter & payment type
Credit meters, smart meters, Economy 7/10, prepayment meters and Direct Debit options often price differently.
How much you use
Low users can be better off with lower standing charges; higher users may prioritise cheaper unit rates.
Key takeaway: don’t pick a tariff just because the unit rate looks low. The cheapest option is usually the lowest total estimated cost once standing charges, your region, and your usage are included.
What to do next (2 minutes)
- Find your latest bill (or smart meter app) for annual kWh usage (gas + electricity).
- Note your meter type (single-rate, Economy 7, smart, prepayment).
- Compare tariffs using your postcode and usage, not national averages.
If you don’t know your usage
You can still compare using typical UK consumption estimates, but your results may change once your actual kWh use is entered. We explain this in the methodology section.
Compare whole-of-market tariffs for your home
Use your postcode and contact details to get a tailored comparison. We’ll match tariffs to your region and meter type, then show the cheapest options by estimated annual cost.
Best for most households
Compare by estimated annual cost and review the unit rates/standing charges to see what drives the total.
If prices change
You can re-check your cheapest options any time—fixed deals, variable deals, and smart tariffs move as markets and supplier pricing change.
Good to know: “Cheapest” can mean the lowest first-year estimate, but you should also check exit fees, price guarantees (if any), and whether the tariff is available for your payment method (e.g., Direct Debit).
What you’ll need (and why)
- Postcode
- Sets your price region (network charges vary across Great Britain).
- Email & phone
- So we can send your quote and help if your meter type or address needs clarification.
- Name
- Used to prepare your comparison and (if you choose) progress the switch.
Get your cheapest quote
Fill in the form and we’ll compare tariffs available for your area. It’s free and there’s no obligation to switch.
Switching safety: for most households, switching is managed by the suppliers. Your energy supply doesn’t stop during the changeover, and you’ll receive final/starting meter reading instructions.
How to judge the “cheapest” tariff: a practical comparison
Different tariffs can look cheaper depending on whether you focus on unit rates, standing charges, or the overall annual estimate. This table shows what to check before you decide.
| Tariff type | Usually suits | Watch-outs | What to compare |
|---|---|---|---|
| Fixed (12–24 months) | Households wanting price certainty and a stable monthly budget | May include exit fees; can miss future price drops | Annual estimate, exit fee, end date, payment method eligibility |
| Variable (including SVT) | People who want flexibility and no/low exit fees | Rates can change; SVT often not the lowest | Current unit rates/standing charges and how often supplier can change prices |
| Dual fuel vs single fuel | Convenience: one supplier for both fuels | Not always cheapest overall—sometimes mixing suppliers costs less | Total combined annual cost, not just a “discount” headline |
| Economy 7 / multi-rate | Homes with storage heaters or heavy off-peak use | Day rate can be significantly higher; wrong split can cost more | Day & night unit rates, your day/night usage split, standing charge |
Decision checklist: pick the right “cheapest” for you
- Check your meter type: single-rate, Economy 7, smart, or prepayment.
- Compare the total estimate: unit rate + standing charge + your kWh usage.
- Confirm payment method: Direct Debit tariffs can price differently from pay-on-receipt-of-bill.
- Scan for exit fees: especially on fixes; note fee per fuel and when it applies.
- Look for eligibility rules: some tariffs are for new customers only or require smart meters.
- Be realistic about usage: using “typical” figures can mis-rank tariffs for your home.
Who the cheapest tariff often suits (and who it may not)
Often suits
- Direct Debit payers with standard credit or smart meters
- People able to switch online and manage bills digitally
- Homes whose usage matches the tariff’s strengths (low standing charge vs low unit rate)
May not suit
- Prepayment customers with limited tariff availability
- Economy 7 users without a clear day/night split
- Anyone likely to move soon (exit fees can reduce value)
Two realistic scenarios (with numbers)
These examples are illustrative and use simplified assumptions to show how “cheapest” can change. Your actual quote will depend on your region and current market rates.
Scenario A: low user in a flat (standing charge matters)
Assumptions: 1–2 bed flat, single-rate electricity + gas, Direct Debit. Annual use: Electric 1,800 kWh, Gas 6,000 kWh.
| Example tariff | What’s “cheap” here | Illustrative annual cost |
|---|---|---|
| Tariff 1: lower standing charge, slightly higher unit rates | Lower fixed daily costs help low usage | ~£1,220 (estimated) |
| Tariff 2: very low unit rates, higher standing charges | Standing charges dominate for low use | ~£1,270 (estimated) |
Result: the tariff with lower standing charges can be cheaper overall, even if unit rates look higher.
Scenario B: family home (unit rates matter more)
Assumptions: 3–4 bed house, single-rate electricity + gas, Direct Debit. Annual use: Electric 3,600 kWh, Gas 14,000 kWh.
| Example tariff | What’s “cheap” here | Illustrative annual cost |
|---|---|---|
| Tariff 1: lower standing charge, average unit rates | Standing charge matters less as usage rises | ~£2,320 (estimated) |
| Tariff 2: slightly higher standing charge, lower unit rates | Lower per-kWh cost can win at higher use | ~£2,210 (estimated) |
Result: for higher users, a lower unit rate often outweighs a slightly higher standing charge.
Numbers are examples to demonstrate the trade-off. Real tariffs vary by region, supplier and timing. Your quote will provide exact unit rates, standing charges and a personalised estimate.
Costs, exclusions and common pitfalls (so the “cheapest” stays cheap)
Before you switch, check these areas where people often get caught out. Most are easy to avoid once you know what to look for.
1) Exit fees on fixed tariffs
Some fixed deals charge a fee if you leave early. Check whether it’s per fuel (gas + electricity) and whether it applies near the end of the contract.
2) Payment method differences
Direct Debit tariffs can be priced differently to pay-on-receipt-of-bill. Make sure you compare like-for-like.
3) Meter type restrictions
Some tariffs require a smart meter; Economy 7 tariffs require a multi-rate meter; prepayment options may be limited.
4) Standing charge dominates low usage
If you’re a low user (e.g., small flat, often away), a higher standing charge can make a “cheap unit rate” tariff more expensive overall.
5) Economy 7 day/night split
Economy 7 can be great if you use a large share of electricity off-peak (often overnight). If not, your day rate could push costs up.
6) Intro offers vs long-term value
A low first-month payment or “credit” can distract from higher ongoing rates. Focus on the estimated annual cost and the rates after any offer period.
Important: If you’re in debt to your current supplier, you may still be able to switch in some situations (e.g., under certain debt thresholds with prepayment). Get advice first and check supplier rules.
Quick pre-switch check (60 seconds)
- Are your personal details correct on your current supplier account (name/address)?
- Do you know your meter type (single rate, Economy 7, prepay, smart)?
- Do you have any exit fees or contract end dates?
- Can you take accurate meter readings (or confirm your smart meter is communicating)?
FAQs: cheapest gas and electricity tariffs in the UK
Is there one cheapest energy tariff in the UK for everyone?
No. The cheapest tariff varies by region (postcode), fuel type (gas/electric), meter type (single rate/Economy 7/smart/prepay), payment method and your annual kWh usage. A tariff that’s cheapest in one region or for one usage pattern may not be cheapest for another.
What should I compare first: unit rate or standing charge?
Compare the estimated annual cost first, then check what drives it. Low users are often more sensitive to standing charges; higher users are often more sensitive to unit rates. The best choice depends on your usage.
Are fixed tariffs always cheaper than variable tariffs?
Not always. Fixed deals can be cheaper at times, and they offer price certainty. Variable tariffs can be cheaper at other times and often have fewer exit fees. Always compare on today’s rates for your region, and consider flexibility vs certainty.
Can I get the cheapest tariff if I have a prepayment meter?
You can still compare, but tariff availability may be more limited and priced differently. If you can switch to a credit meter (subject to supplier checks), you may unlock more options—though it isn’t right for everyone. If you’re struggling to top up, seek advice and support options.
Do I need a smart meter to access the cheapest deals?
Not always. Some “smart” or time-of-use tariffs require a compatible smart meter, but many competitive fixed or standard tariffs do not. If a tariff requires a smart meter, check whether installation is needed and whether the supplier supports your meter configuration.
What happens to my supply when I switch supplier?
Your gas and electricity keep flowing as normal. The change is administrative: your new supplier takes over billing. You’ll usually be asked for meter readings around the switch date (or smart readings are used where available).
How do I know if a tariff is actually available in my area?
Use a comparison that filters by postcode, meter type and payment method. Suppliers can publish different rates and availability by region, and some tariffs are limited to new customers or specific meter types.
Should I stay on my Standard Variable Tariff (SVT)?
An SVT can be convenient and flexible, but it’s not usually the cheapest option. If you value flexibility, look for competitive variable tariffs and compare them against fixes, considering any exit fees and your likelihood of moving.
What if I’m renting—can I switch to a cheaper tariff?
In most cases, yes—if you pay the bills and your tenancy allows you to choose the supplier. You typically can’t change the meter without permission, and you should keep records and follow your landlord/agent’s process where required.
Trust, methodology and sources
How we assess “cheapest” (our approach)
When we say “cheapest tariff right now”, we mean the tariff that produces the lowest estimated annual cost for the details entered (postcode region, meter type, payment method and usage). We encourage comparing on total cost, then verifying the unit rates and standing charges that make up that estimate.
Assumptions we commonly use (when usage is unknown)
- We may use typical household consumption estimates as a placeholder until you provide your actual kWh figures.
- Estimates assume your usage is spread across the year; seasonality can change monthly costs.
- Where relevant, Economy 7 comparisons depend on the assumed day/night split.
Tip: your last 12 months of bills (or your online account) is the most reliable source for annual kWh.
Limitations (what can change the result)
- Supplier prices can change, and tariff availability can be withdrawn.
- Some tariffs have eligibility rules (new customers only, smart meter required, Direct Debit only).
- Non-price factors matter: customer service, app usability, billing accuracy and support for vulnerability.
Independent UK sources we use and recommend
- Ofgem (UK energy regulator) – rules, price cap information and consumer guidance.
- Citizens Advice: energy – switching rights, billing problems and support.
- GOV.UK: energy – official services and policy information.
Editorial promise: We aim to help you choose a tariff based on transparent totals and clear trade-offs. We do not promise that a specific supplier will always be the cheapest, because prices vary by region and change over time.
Ready to find your cheapest tariff?
Compare whole-of-market options tailored to your postcode and meter type, then choose based on total estimated cost, exit fees and suitability.
- See the cheapest options for your area
- Understand what’s driving the total (unit rates vs standing charges)
- Switch only if the tariff fits your circumstances
Prefer to take your time? Use the checklist and FAQs above, then come back to compare when you’re ready.
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