Cheapest gas and electricity tariff UK (January 2027)
See what “cheapest” really means in the UK market in January 2027, how to check eligibility (region, meter type, payment method), and how to compare safely without falling for headline rates.
- Fast answer first: what you can (and can’t) call the cheapest in January 2027
- Compare like-for-like: unit rates, standing charges, exit fees and tariff terms
- Two realistic cost scenarios with clear assumptions (so you can sense-check quotes)
Prices are estimates and vary by region, payment method and meter type. Always check your personalised quote and tariff terms before switching.
Fast answer: what’s the cheapest tariff in January 2027?
In the UK, there usually isn’t one single “cheapest gas and electricity tariff” that’s cheapest for everyone in January 2027. The lowest-cost option depends on your region (distribution area), meter type (standard credit, smart, prepayment; and for electricity whether you have Economy 7/10), and how you pay (Direct Debit vs cash/cheque vs prepay).
Practical definition of “cheapest”: the tariff with the lowest estimated annual cost for your household, after accounting for unit rates, standing charges, any discounts, and exit fees (where relevant).
Key takeaways (January 2027)
- Don’t judge by unit rate alone. A slightly higher unit rate can still be cheaper overall if standing charges are lower (or vice versa).
- Fixed vs variable: fixed deals can protect you from price rises during the term, but can come with exit fees if you leave early. Variable tariffs can change, sometimes with short notice.
- Payment method matters. Direct Debit is often priced differently from cash/cheque and prepayment.
- Economy 7/10 users: you must compare day and night rates and your usage split, not just a headline single-rate figure.
- Availability is not universal. Some deals are limited by region, meter type, credit checks, or smart meter requirements.
If you want the cheapest tariff for you in January 2027, get a personalised comparison based on your current tariff, meter, and typical usage.
Get a January 2027 quote (whole-of-market comparison)
Tell us a few basics and we’ll match tariffs you’re likely eligible for. If you have your latest bill, you’ll get the most accurate comparison, but you can still start with postcode and contact details.
Why we ask for postcode: electricity and gas standing charges and unit rates vary by region, so postcode is essential for a meaningful “cheapest” result.
What you’ll need (if available)
- Postcode and whether you pay by Direct Debit or prepayment
- Your meter type (smart / standard, and if electricity is single-rate or Economy 7)
- Typical annual usage in kWh (or a recent bill/statement)
- Any priority needs (for example, medical equipment reliance)
What “cheapest” usually looks like in practice
For many households, the cheapest January 2027 option may be a competitive fixed tariff (if available for your meter and region) or a lower-cost variable alternative if you want flexibility. The best choice also depends on your risk tolerance for price changes and how long you plan to stay in the property.
Request your comparison
Compare tariffs: what to check before calling anything “cheapest”
Use the table below as a quick decision aid. It focuses on the fields that most often change the outcome of a comparison in January (winter usage, standing charges, and fixed-term constraints).
| Tariff type | Why it can be cheapest | Watch-outs (common January pitfalls) | Best for |
|---|---|---|---|
| Fixed (e.g. 12 months) | Can lock in competitive unit rates/standing charges vs future rises; makes budgeting easier. | Exit fees if you move/switch early; may require Direct Debit; availability varies by region and meter. | Staying put, want price certainty. |
| Variable | Flexibility to leave; may drop if market prices fall. | Rates can change; standing charge increases can outweigh unit rate reductions. | Short-term needs, unsure about moving. |
| Economy 7/10 (time-of-use) | Can be cheaper if a meaningful share of your electricity is used overnight (storage heaters, EV charging). | Day rate often higher; if you don’t use enough off-peak, it can cost more overall. | Homes set up to shift use to off-peak. |
| Prepayment (PAYG) | You may find competitive options depending on meter and region; helps some households manage spend. | Eligibility is stricter; tariffs differ from credit meters; ensure you’re comparing prepay-to-prepay. | Households who prefer pay-as-you-go and can top up reliably. |
Cheapest tariff checklist (quick scan)
Rates
Compare both unit rate and standing charge for gas and electricity.
Eligibility
Check meter type, payment method, region and any credit checks.
Fees & terms
Exit fees, price guarantees, discounts and what happens at end of term.
Tip: If you’re comparing two tariffs with very close estimated annual costs, choose based on the risk you can tolerate (fixed certainty vs variable flexibility) and any exit fees if you might move.
Costs, exclusions and common pitfalls (January switching)
January comparisons can be skewed by winter consumption and by how tariffs structure standing charges. Here are the issues we see most often when people try to find the cheapest gas and electricity tariff.
1) Standing charges can dominate
If you’re a low-usage household (small flat, out at work, or a second home), a tariff with a slightly higher unit rate but lower standing charge may be cheaper overall. Always compare the estimated annual cost, not just p/kWh.
2) Exit fees and moving home
A “cheapest” fixed deal can become expensive if you pay an exit fee to leave early. If you’re renting or likely to move within the term, favour low or no exit fees.
3) Economy 7: wrong usage split
If your quote assumes (say) 40% night usage but you only use 10–15% off-peak, the “cheapest” Economy 7 option can be misleading. Sense-check your day/night pattern.
4) Payment method & meter restrictions
Some tariffs are only available with Direct Debit, smart meters, or standard credit meters. Prepayment options are priced and offered differently and must be compared on that basis.
Important: If you’re in debt to your current supplier, switching may be restricted depending on your circumstances and payment method. If you’re struggling, Citizens Advice explains support options and what to do next.
Two realistic scenarios (with numbers you can sanity-check)
The examples below are illustrative. They show how “cheapest” can change based on usage and standing charges. Numbers are rounded and not a market forecast for January 2027.
Scenario A: Small flat, low usage (single-rate)
- Assumptions
- Electricity: 1,800 kWh/year. Gas: 8,000 kWh/year. Pay by Direct Debit. Region: varies (example only).
- Tariff 1 (lower standing charge)
- Elec unit 27.0p, standing 45p/day. Gas unit 6.8p, standing 30p/day. No exit fee.
- Tariff 2 (lower unit rate)
- Elec unit 25.8p, standing 62p/day. Gas unit 6.4p, standing 34p/day. Exit fee £75/fuel.
- Estimated annual cost (illustrative)
- Tariff 1 ≈ £1,192. Tariff 2 ≈ £1,223. For low usage, the lower standing charge can win even with a higher unit rate.
Scenario B: Family home, higher usage (single-rate)
- Assumptions
- Electricity: 3,600 kWh/year. Gas: 14,500 kWh/year. Pay by Direct Debit. Region: varies (example only).
- Tariff 1 (lower standing charge)
- Elec unit 27.0p, standing 45p/day. Gas unit 6.8p, standing 30p/day. No exit fee.
- Tariff 2 (lower unit rate)
- Elec unit 25.8p, standing 62p/day. Gas unit 6.4p, standing 34p/day. Exit fee £75/fuel.
- Estimated annual cost (illustrative)
- Tariff 1 ≈ £2,012. Tariff 2 ≈ £1,973. For higher usage, the lower unit rate can outweigh higher standing charges.
How to use these examples: If a quote looks “too good”, check whether it assumes different usage, a different meter type, or excludes fees/discount conditions. Your actual bill will reflect your real consumption and your supplier’s billed rates.
FAQs: cheapest gas and electricity tariffs in the UK (January 2027)
1) Why can’t you just list the cheapest tariff for January 2027?
Because UK prices vary by region and meter type, and some tariffs are restricted by payment method (for example, Direct Debit) or eligibility. A tariff that’s cheapest in one region can be beaten elsewhere due to different standing charges.
2) Is the “cheapest” tariff always a fixed deal?
Not always. Fixed tariffs can be cheapest if priced competitively and you’ll stay for the full term. Variable tariffs can be cheaper for flexibility, particularly if you may move soon or want to avoid exit fees. The right choice depends on your circumstances and risk tolerance.
3) Do smart meters unlock cheaper tariffs?
Sometimes. Certain tariffs (including some time-of-use options) may require a smart meter, but having one doesn’t guarantee cheaper rates. It can, however, make readings more accurate and reduce estimated bills.
4) I’m on a prepayment meter — can I still get a cheaper tariff?
Potentially, yes, but comparisons must be prepay-to-prepay (or consider switching meter type where possible). Availability and pricing can differ from standard credit. If you’re struggling to top up or have supply concerns, seek support promptly.
5) What matters more: unit rate or standing charge?
It depends on usage. High-usage homes tend to be more sensitive to unit rates; low-usage homes can be dominated by standing charges. That’s why the estimated annual cost is the most reliable “cheapest” metric.
6) Can I switch energy supplier in January if I’m renting?
In most cases, tenants can choose the supplier they pay, but check your tenancy agreement and ensure you’re responsible for the bills. If bills are included in rent, you typically can’t switch.
7) How long does switching take in the UK?
Switching times can vary, but suppliers generally aim to complete switches promptly. You’ll be told your expected switch date during the application process. You can also be protected by the cooling-off period terms where applicable.
8) What’s the safest way to compare “cheapest” tariffs?
Use your actual annual kWh (from bills) if possible, compare on the same meter type and payment method, and check exit fees and end-of-tariff rates. If you have Economy 7/10, confirm your day/night usage split.
Trust, methodology and sources
Page ownership
- Written by
- EnergyPlus Editorial Team
- Reviewed by
- Energy Specialist
- Last updated
- January 2027
How we assess “cheapest” (our approach)
To avoid misleading headline claims, we treat “cheapest” as a personalised outcome. When comparing tariffs we focus on:
- Estimated annual cost based on provided or typical consumption (kWh) and the tariff’s published rates
- Standing charges and how they vary by region (postcode)
- Payment method pricing (Direct Debit, standard credit, prepayment)
- Meter type (single-rate vs Economy 7/10; smart meter requirements)
- Tariff terms (fixed duration, price changes, discounts, and exit fees)
Limitations: Supplier pricing and availability can change quickly, and some deals are only available to certain customer groups. The examples on this page are illustrative and should not be treated as a guarantee of prices or savings in January 2027.
Independent UK sources we rely on
- Ofgem (UK energy regulator) — regulation, consumer protections and market updates
- Citizens Advice: energy guidance — switching, billing issues and support if you’re struggling
- GOV.UK: heating and energy support — official information on benefits and schemes (where applicable)
Ready to find your cheapest tariff for January 2027?
Get a personalised comparison based on your postcode, meter and how you pay — with clear tariff terms and caveats so you can switch confidently.
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