Cheapest fixed energy tariff after January 2027 cap
Find the cheapest fixed energy tariff after the January 2027 price cap by comparing live whole-of-market deals for your postcode, meter type and payment method — then sense-checking exit fees, discounts and the fixed end date.
- Answer-first guidance: what “cheapest” really means under the cap
- UK-specific checks: region, meter type, payment method, exit fees
- Two realistic scenarios with numbers (clearly stated assumptions)
Prices and availability change by region, meter and payment method. We don’t list “the cheapest” tariff as a single named deal — use the quote journey for live results for your home.
Fast answer: cheapest fixed energy tariff after January 2027 cap
The cheapest fixed energy tariff after January 2027 cap is the lowest estimated annual cost fixed deal available for your postcode, after accounting for your meter type, payment method, standing charges, unit rates and any exit fees. There isn’t one single UK-wide “cheapest” fix — the cap and tariffs vary by region and profile.
Key takeaway #1
Compare using estimated annual cost, not just unit rates. A lower unit rate can be offset by a higher standing charge (and vice versa).
Key takeaway #2
A fix can be “cheapest” only if you’re likely to keep it. Exit fees and fixed end dates matter if you might move home or re-switch.
Key takeaway #3
The Ofgem price cap limits default tariff prices, not fixed deals. Fixed tariffs can be above or below the cap depending on the market.
Important: If you’re on a smart prepayment meter, economy 7, or a regional network with different charges, the “cheapest” fixed option can look very different from headline deals. Always compare with your actual details.
How to find the cheapest fixed tariff (without getting caught out)
After a price-cap change (including January 2027), the best approach is to compare fixed deals using the same inputs the market uses: your region, meter type, payment method and consumption profile. Then you check the “fine print” items that change whether a deal stays cheapest over time.
- Start with the right baseline: are you currently on a standard variable tariff (SVT) or already fixed? SVT prices are capped; fixes aren’t.
- Use your own usage where possible: annual kWh for electricity and gas from your bill or online account beats guesswork.
- Match your meter setup: single-rate, Economy 7/Economy 10, smart prepay, or traditional prepay can all price differently.
- Filter by payment method: direct debit vs prepayment vs pay on receipt can change availability and pricing.
- Sense-check “cheapest” with exit fees: a deal that’s marginally cheaper may cost more if you re-switch or move.
- Check contract length and fixed end date: 12 months vs 24 months can change risk if prices fall.
Tip: If you don’t have exact annual usage, use your latest 3–12 months of kWh and annualise it. Seasonal households (electric heating, heat pumps, long winter occupancy) should lean towards 12 months for accuracy.
Two realistic scenarios (with numbers you can adapt)
Scenario A: low gas use, may move house
Assumptions: 1–2 bed flat, gas for cooking/hot water, modest heating use; single-rate electricity; pays by direct debit; likely to move within 12 months.
How to judge “cheapest”: prioritise no/low exit fees and a shorter fix. Even if another tariff is estimated £3–£6/month cheaper, one exit fee can wipe that out if you leave early.
Scenario B: higher use household, wants budget certainty
Assumptions: 3–4 bed home, gas central heating; higher winter demand; stable occupancy; open to 12–24 month fixes; pays by direct debit.
How to judge “cheapest”: focus on the estimated annual cost and how long that price is fixed. If market prices rise after January 2027, a slightly higher fix today could still be “cheapest for you” if it avoids future increases.
Compare fixed deals for your postcode
Use this quick form to start a whole-of-market comparison. We’ll use your details to show available fixed tariffs and the estimated annual cost for your home.
Compare options: fixed vs SVT vs tracker (what “cheapest” means)
A “cheap” tariff is only cheap for you if it matches how you pay, how you use energy, and how long you’ll stay in the property. Use this table to decide what you’re comparing your fixed tariff against after the January 2027 cap.
| Tariff type | Price certainty | How it relates to the price cap | Typical watch-outs | Often suits |
|---|---|---|---|---|
| Fixed | High (for unit rates/standing charges during fix) | Not capped (can be below or above SVT levels) | Exit fees, end date, discounts that can change after fix | Budget planners, higher use households, people expecting price rises |
| Standard variable (SVT) | Medium/low (changes when cap updates) | Capped (cap sets max charges for typical use, varies by region) | Can rise at next cap, may not be cheapest in a falling market | People who might move soon, or want flexibility |
| Tracker / variable deal | Low/medium (can move frequently) | Usually not capped like SVT; depends on terms | Can jump quickly; check how prices are set and how often they change | Comfortable with volatility, watching the market closely |
Cheapest fixed tariff checklist (quick decision)
It’s likely to suit you if…
- You expect to stay in the property for most of the fix term.
- You want predictable pricing for budgeting.
- The estimated annual cost is lower than alternatives after considering exit fees.
- You have typical meter arrangements (or you’ve filtered correctly for your setup).
It may not suit you if…
- You’re likely to move, rent short-term, or may need to switch again soon.
- You’re betting prices will fall and you want flexibility.
- The deal relies on conditions you might not meet (e.g. payment method changes).
- You have an Economy 7/10 meter and haven’t compared using peak/off-peak rates.
Reminder: The price cap is not a cap on your total bill and it doesn’t apply to every tariff type. Ofgem explains how the cap works and why it varies by region and payment method.
Costs, exclusions and common pitfalls (UK-specific)
When people search for the cheapest fixed energy tariff after January 2027 cap, the biggest mistakes are usually about eligibility, meter setup and fees — not the headline price.
1) Exit fees
Many fixes charge an exit fee if you leave early. If you might move or re-switch, a “cheaper” tariff can cost more overall. Always compare the estimated saving against the potential fee.
2) Meter type mismatches
Economy 7/10 uses day/night rates; prepayment has different pricing; smart meters can be configured in different ways. Make sure your comparison matches your meter, or the “cheapest” result won’t be real for you.
3) Regional differences
Standing charges and unit rates vary across Great Britain by network region. That’s why you can’t rely on national averages or social posts claiming a single “cheapest fix”.
4) Discount conditions
Some deals include conditional discounts (for example linked to payment method, billing preferences, or other criteria). Check what happens if your circumstances change mid-contract.
5) “Cheapest” vs “best value”
If you value customer service, app features, payment flexibility, or greener matching tariffs, the cheapest option on paper might not be your best choice. It’s fine to trade a small cost difference for your priorities.
6) Timing and cooling-off
Switching normally includes a cooling-off period and takes time to complete. If your SVT changes with the cap, you may see a different bill before the switch completes. Check your supplier’s timelines and your new contract details.
If you’re in debt or on emergency credit: you may still be able to switch in some situations, but rules can be more complex (especially for prepayment). Citizens Advice explains your options and where to get help.
FAQs
What is the cheapest fixed energy tariff after January 2027 cap?
It’s the fixed tariff with the lowest estimated annual cost available for your postcode after the January 2027 cap change, once you include standing charges, unit rates, payment method, meter type and any exit fees. The result varies by region and household usage, so you need a personalised comparison.
Does the Ofgem price cap apply to fixed tariffs?
Not usually. The cap limits prices for standard variable tariffs and default tariffs, but fixed deals are set by suppliers and can be above or below SVT levels. Always compare the estimated annual cost and contract terms rather than assuming a fix is capped.
Why do fixed tariff prices differ by postcode in Great Britain?
Because parts of the bill (including network costs) vary by region, and suppliers price tariffs using regional profiles. That’s why the same tariff name can have different rates and standing charges depending on where you live.
Is it worth fixing for 24 months after the January 2027 cap?
It depends on your appetite for risk and how long you’ll stay put. Longer fixes can protect you if prices rise, but can be less flexible if prices fall or you need to switch. Check the fixed end date, exit fees and whether a 12-month fix is close in cost.
Can I get the cheapest fixed deal if I have a prepayment meter?
You can still compare, but the available range of fixed deals may be smaller and pricing can differ from direct debit tariffs. The cheapest option for a prepay customer may not match what a direct debit customer sees, so make sure you compare using “prepayment” and the correct meter type.
What details do I need to compare fixed energy tariffs accurately?
Your postcode, payment method (direct debit/prepay/receipt of bill), meter type (single rate or Economy 7/10), and ideally your annual usage in kWh for gas and electricity. If you don’t have annual figures, your latest bills can be used to estimate.
Will I pay an exit fee if I switch from my current fixed tariff?
Possibly. Many fixed tariffs include exit fees if you leave before the contract ends, though rules and fee amounts vary by supplier and product. Check your current tariff terms before switching, and consider whether a no/low-exit-fee tariff is better for flexibility.
Is the cheapest fixed tariff always the best option?
Not always. A slightly higher estimated cost might be better value if it has lower exit fees, a more suitable contract length, or features you care about. The best approach is to shortlist a few deals close in cost and choose based on your circumstances and risk tolerance.
Trust, methodology and sources
Page ownership
- Written by:
- EnergyPlus Editorial Team
- Reviewed by:
- Energy Specialist
- Last updated:
- July 2026
How we assess “cheapest” (and limitations)
- Cheapest is personalised: we treat “cheapest fixed energy tariff” as the lowest estimated annual cost for your details (postcode/region, meter type, payment method, and usage profile).
- We don’t publish a single named deal: tariff availability and pricing change frequently. The quote journey shows live options for your home.
- We include real-world checks: exit fees, contract length and end date, and whether a tariff is compatible with your meter setup.
- Limitations: estimates depend on the accuracy of your usage and meter info. If your household’s energy use changes (new baby, working from home, heat pump/EV), the cheapest option may change.
Sources we rely on
- Ofgem: check if the energy price cap affects you
- Ofgem: energy price cap
- Citizens Advice: energy supply and switching help
- GOV.UK: find an energy certificate (EPC)
We link to sources for how the cap works, switching rights, and household energy context. For live tariff prices, always use a personalised comparison.
Ready to check the cheapest fixed deals available for your home?
Get a whole-of-market comparison using your postcode and meter details. You’ll see fixed options ranked by estimated annual cost, plus the key terms that affect whether a deal stays “cheapest” for you.
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