Cheapest gas and electricity tariff in the UK this week
See what “cheap” really means right now, how to check if you’re eligible, and get a whole-of-market quote based on your postcode, meter and payment method.
- Updated guidance for UK households (not business energy)
- Clear checks for exit fees, smart/prepay meters and regional pricing
- Side-by-side comparison table + two real-world cost scenarios
Prices vary by region, meter type, payment method and eligibility. “Cheapest” is always an estimate based on today’s available tariffs for your details.
Fast answer: what’s the cheapest tariff “this week”?
There isn’t one single cheapest gas and electricity tariff for everyone in the UK this week. The cheapest option depends on your region, meter type (standard, smart, prepay, Economy 7), payment method, usage, and whether a tariff has eligibility criteria (for example: smart meter required or online-only billing).
Good rule of thumb: in the current UK market, “cheapest” often means the lowest estimated annual cost for your details, not necessarily the lowest unit rate. A tariff with a slightly higher unit rate can still work out cheaper if its standing charge is lower (or vice versa).
What you can do today
- Check tariffs available for your postcode and meter.
- Compare by estimated yearly cost and tariff type (fixed vs variable).
- Confirm any exit fees and price cap implications.
When “cheapest” may not be best
- If you may move home soon (watch exit fees).
- If you’re on prepay and can’t switch meter type easily.
- If the tariff depends on a smart meter you don’t yet have.
Key takeaways
- Always compare standing charge + unit rates together.
- Use your kWh usage if you have it (more accurate).
- Confirm the tariff’s payment method and billing rules.
If you want the quickest route to the cheapest eligible tariff for you, use the quote form below. We’ll match tariffs to your exact details and show the best-value options available.
Get a personalised “cheapest tariff” shortlist
Tell us a few basics and we’ll compare whole-of-market household tariffs available for your postcode, including checks that often change what counts as “cheapest” (meter type, payment method, and eligibility).
What you’ll need: your postcode and (ideally) a recent bill so you can confirm your meter type and roughly how much energy you use in kWh.
What happens next
- We match tariffs to your region, meter and payment method.
- We show estimated annual costs and highlight key terms (e.g., exit fees).
- If you choose to proceed, we guide you through switching steps.
Prefer to understand the checks first? Jump to how to find the cheapest tariff.
Request your quote
We’ll use these details to find relevant tariffs and contact you with your results.
How to find the cheapest gas and electricity tariff (UK)
To identify the cheapest tariff for your home, you need to compare using the same inputs suppliers use for pricing. Here’s the practical checklist we recommend before switching.
1) Confirm your meter type
- Credit meter (pay monthly on receipt of a bill or by Direct Debit).
- Prepayment (top-up key/card or smart prepay).
- Economy 7 / multi-rate (day/night rates).
- Smart meter (can still be single-rate; enables some smart-only tariffs).
If you’re not sure, check your bill or meter display. Switching tariffs usually doesn’t require a meter change, but some tariffs require a smart meter to be fitted and communicating.
2) Know your payment method
Prices can differ for:
- Monthly Direct Debit (often the widest access to tariffs).
- Cash/cheque or on receipt of bill (fewer options).
- Prepay (pricing and availability can be different).
When comparing “cheapest”, always compare using the same payment method you can actually use.
3) Compare by estimated annual cost (not just unit rate)
Your estimated annual cost combines:
- Unit rate (pence per kWh)
- Standing charge (pence per day)
- Your estimated usage (kWh per year)
If you can, use your actual annual kWh from your bill for a more reliable comparison.
4) Check tariff type and key terms
- Fixed tariff
- Unit rates and standing charges are fixed for a set term (often 12–24 months). You may pay an exit fee if you leave early.
- Variable tariff
- Prices can change. Many UK households are on a variable tariff influenced by the Ofgem price cap (where applicable).
- Tracker/time-of-use
- Prices can vary daily or by time of day. These can be cheap for some households, but they’re not suitable for everyone.
Two realistic cost scenarios (with numbers)
These examples show how a tariff that looks “cheap” on unit rate can be beaten (or worsened) by standing charge, usage, and tariff structure. Figures below are illustrative and not a promise of availability.
Scenario A: low usage flat (single-rate)
Assumptions: 1–2 bed flat; electricity 1,800 kWh/yr; gas 6,000 kWh/yr; paying by Direct Debit; single-rate meters.
| Example tariff | Standing charge | Estimated annual cost |
|---|---|---|
| Tariff 1 (lower standing charge) | Lower | ~£1,260 |
| Tariff 2 (lower unit rate) | Higher | ~£1,290 |
For lower usage homes, standing charge can be a bigger share of the bill—so the “cheapest” tariff is often the one with a lower standing charge if rates are otherwise similar.
Scenario B: family home (higher usage)
Assumptions: 3–4 bed house; electricity 3,600 kWh/yr; gas 12,000 kWh/yr; paying by Direct Debit; single-rate meters.
| Example tariff | Unit rates | Estimated annual cost |
|---|---|---|
| Tariff 1 (slightly higher unit rate) | Higher | ~£2,220 |
| Tariff 2 (lower unit rate) | Lower | ~£2,160 |
For higher usage homes, small differences in unit rates can outweigh standing charge—so the “cheapest” tariff often prioritises lower kWh rates, provided the standing charge isn’t unusually high.
Important: your region can change the ranking. Electricity distribution regions and gas network areas affect standing charges and unit rates. That’s why “UK cheapest” lists without a postcode can mislead.
Comparison table: which type of tariff is “cheapest” for you?
Use this table to narrow down the kind of tariff to look for. The cheapest option for your home will depend on your usage pattern and whether you can meet eligibility requirements.
| Tariff type | Can be cheapest when… | Watch-outs | Who it suits |
|---|---|---|---|
| Fixed (12–24 months) | You want price certainty and the fixed rate is competitively priced for your region. | Exit fees; may miss out if prices fall; check what happens at end of fixed term. | Most households who value predictable bills. |
| Variable (incl. price-cap influenced) | You want flexibility and no exit fees, or fixed deals aren’t meaningfully cheaper for you. | Rates can change; “cheap this week” may not stay cheap. | Renters, movers, or anyone avoiding exit fees. |
| Tracker / market-linked | You’re comfortable with price movement and can absorb higher days if they occur. | Not predictable; understand caps/limits (if any) and how rates are set. | Engaged households monitoring prices. |
| Time-of-use (smart meter) | You can shift use to off-peak times (e.g., overnight appliances; EV charging if applicable). | Peak rates can be high; requires a working smart meter; can be unsuitable for some households. | Homes with flexible usage patterns. |
Decision checklist: who the “cheapest” tariff usually suits (and who it doesn’t)
Often suits you if…
- You can pay by monthly Direct Debit.
- You have (or can get) the required meter (e.g., smart meter for smart-only tariffs).
- You’re confident you’ll stay put for the tariff term (if fixed).
- You’re comparing using realistic kWh usage.
May not suit you if…
- You’re likely to move soon (exit fees may outweigh benefits).
- You rely on prepayment and have limited tariff availability.
- You can’t shift usage but are considering time-of-use tariffs.
- You have a complex setup (e.g., multi-rate, restricted meter) and need extra checks.
If you want a shortlist filtered to tariffs you can actually take, use the EnergyPlus quote form—we’ll take postcode, contact details and then confirm the rest with you if needed.
Costs, exclusions and common pitfalls (UK)
When a tariff looks like the cheapest, it’s usually because something in the small print changes the real-world cost or eligibility. These are the most common issues we see when households try to switch to a headline “cheap” deal.
Exit fees on fixed tariffs
Some fixed tariffs charge if you leave before the end date. If you might move, or you expect to switch again soon, a no-exit-fee option can be better value overall.
Standing charge differences
A lower unit rate can be offset by a higher standing charge. This matters most for low users and smaller properties.
Smart meter / online-only eligibility
Some cheaper tariffs require a communicating smart meter, app billing, or paperless statements. If that won’t work for your household, the “cheapest” tariff isn’t really available to you.
Direct Debit assumptions
Many comparisons assume monthly Direct Debit. If you pay on receipt of bill, by cash/cheque, or you’re in debt with a supplier, your available tariff set may be narrower.
Economy 7 and usage split
If you have Economy 7, whether a tariff is cheapest depends on your day vs night usage split. If most of your use is in the day, a single-rate tariff can sometimes work out cheaper.
Tip: if you’re comparing prices you’ve seen in the news or on social media, verify the assumptions: region, payment method, meter type, and whether VAT (domestic energy is generally charged at 5%) is included in the presented rates.
FAQs
Is there a single cheapest energy supplier in the UK this week?
No. Energy pricing varies by region, meter type, payment method, usage and tariff eligibility. A supplier can be cheapest for one household and not for another—even on the same day.
What does “whole-of-market” comparison mean?
It means we aim to compare available household tariffs across a broad range of UK suppliers, rather than a small panel. Availability still depends on your details, and some niche tariffs may have strict eligibility criteria.
Will switching disrupt my gas or electricity supply?
Normally, no. Switching supplier changes who bills you; the physical energy supply stays on. There can be admin delays, so keep paying your current supplier until the switch is confirmed.
Can I switch if I’m in debt with my current supplier?
Sometimes. Rules can vary, especially for prepayment meters. If you’re in debt, you may need to clear it, agree a repayment plan, or use a debt-assignment process for prepay. If you’re unsure, get personalised guidance.
Is a fixed tariff always cheaper than the price cap?
Not always. Some fixed deals price above (or close to) a variable tariff influenced by the Ofgem price cap. The right choice depends on your appetite for certainty, how long you’ll stay, and the exact rates for your region.
Do I need a smart meter to get the cheapest tariff?
Not necessarily. Many competitive tariffs are available without a smart meter. However, some of the cheapest or most innovative tariffs (like time-of-use) may require a communicating smart meter.
How do standing charges affect what’s cheapest?
Standing charges are paid every day regardless of usage. For low-use households, a higher standing charge can make a low unit rate poor value. For higher-use homes, unit rates often matter more.
How often do “cheapest tariffs” change?
They can change frequently—sometimes daily—because suppliers can adjust pricing, withdraw products, or change eligibility. That’s why it’s best to check with your postcode and meter details right before you apply.
Trust, methodology and sources
Editorial details
- Written by
- EnergyPlus Editorial Team
- Reviewed by
- Energy Specialist
- Last updated
- April 2026
How we assess “cheapest this week”
- Availability-led: we prioritise tariffs currently available to UK households (not business energy).
- Like-for-like inputs: we compare using the same basics suppliers price on: postcode/region, meter type, payment method, and estimated usage (kWh).
- Cost-led ranking: “cheapest” means lowest estimated annual cost for the same assumptions, then we highlight trade-offs (exit fees, eligibility, tariff type).
- Quality checks: we flag tariffs that may not suit everyone (e.g., smart-meter required, time-of-use exposure, online-only billing).
Limitations: tariff pricing and availability can change quickly; some households have restricted meters or special circumstances that affect eligibility; and the “cheapest” result depends on your usage estimate. Always confirm final rates and terms before switching.
UK sources we use and recommend
- Ofgem (Great Britain energy regulator) — price cap, consumer protections, switching rules.
- Citizens Advice: Energy — practical advice for bills, debt, complaints and switching.
- GOV.UK — guidance on support schemes and government services (where applicable).
Ready to check the cheapest tariff for your home?
Get a whole-of-market quote using your postcode. We’ll show estimated yearly costs and highlight key terms like exit fees and meter requirements.
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