Cheapest fixed energy tariff for flat sharers in the UK
Find a fixed deal that fits shared living: one bill payer, multiple people, and usage that can change quickly. We’ll show what “cheapest” really means for flat shares—and help you compare whole-of-market options based on your meter, payment method and postcode.
- Fast answer: how to pick a fixed tariff when your household changes often
- Two realistic cost scenarios (with assumptions) to sanity-check quotes
- Common flat-share pitfalls: exit fees, meter types, billing names and credit checks
Prices and availability vary by region, meter type and payment method. Any figures on this page are estimates for guidance, not guarantees.
Fast answer: what’s the cheapest fixed tariff for flat sharers?
There isn’t one single “cheapest fixed tariff for flat sharers” across the UK. The lowest-cost fixed deal depends on your postcode (regional rates), meter type (credit vs prepay vs smart), payment method (monthly direct debit is often cheapest), and your annual usage (which can swing dramatically in shared homes).
For most flat shares, the cheapest practical fixed tariff is usually the one that balances a competitive unit rate with low exit fees and manageable billing when tenants change.
Best default choice
A 12‑month fixed on monthly direct debit with reasonable exit fees (or none) and clear online billing.
If your household changes often
A shorter fix (e.g. 6–12 months) or a fix with low exit fees, so you’re not stuck paying to leave.
If you’re on prepayment
The cheapest fixed deal may be limited. Consider whether you can switch to credit meter / smart PAYG (eligibility varies) before choosing a fix.
Key takeaway for flat sharers: “Cheapest” should be judged on estimated annual cost for your usage plus how much it could cost to exit early if someone moves out. Always check exit fees and tariff end dates before you switch.
Compare fixed tariffs for your flat share (whole-of-market)
If you want the cheapest fixed tariff for your address, you’ll get the most accurate result by comparing using your postcode and a rough idea of usage. If you don’t know usage, that’s common in flat shares—start with a best estimate and refine once you’ve checked a recent bill.
Tip for sharers: Agree up-front who is the named account holder (bill payer) and how you’ll split payments. Suppliers typically deal with the person named on the account.
What you’ll need (2 minutes)
- Your postcode
- Whether you pay by direct debit (or want to)
- Your meter type (smart/credit/prepay; single rate or Economy 7)
- A rough annual usage estimate (optional but helpful)
Get your quote
Fixed tariff comparison: what matters most for flat sharers
When people search “cheapest fixed energy tariff for flat sharers UK”, they usually mean lowest total cost without getting caught out by shared-living admin. Use the table below to compare deals on more than just unit rates.
| Comparison point | Why it matters in a flat share | What to check before switching | Quick rule of thumb |
|---|---|---|---|
| Exit fees | Sharers move. If the bill payer leaves, you may need to end the tariff early. | Exit fee per fuel (gas/electric), and whether it reduces near the end date. | If your tenancy is uncertain, prioritise lower exit fees over a tiny unit-rate win. |
| Standing charge | Even when everyone is away (holidays), you still pay it daily. | Daily standing charge for each fuel, and whether it’s higher than your current tariff. | Low users: standing charge can matter more than unit rate. |
| Unit rate(s) | High-use homes (WFH, gamers, electric showers) feel unit-rate differences most. | Electricity p/kWh; gas p/kWh; Economy 7 day/night split if applicable. | High use: focus on unit rate after checking exit fees. |
| Billing & app features | One person pays, everyone wants visibility (and fewer disputes). | Monthly bills, meter-read reminders, usage tracking (smart meter), downloadable statements. | Choose a supplier that makes it easy to prove usage and payments. |
| Payment method | Direct debit is often cheapest; prepay choices can be narrower. | Whether the quoted price assumes monthly direct debit, cash/cheque, or prepayment. | Compare like-for-like: same payment method and meter type. |
Decision checklist: who a fixed tariff suits
- You expect to stay in the property for most of the fixed term (or the exit fee is low enough).
- You want predictable pricing (unit rates and standing charges stay the same during the fix).
- You can pay by monthly direct debit and pass any supplier checks required.
- You’re happy for one person to be the named account holder (and manage the admin).
Who it might not suit
- Your tenancy is likely to end soon or flatmates change frequently (exit fees may outweigh savings).
- You’re on prepayment and can’t change meter/payment method easily.
- You’re expecting major changes in usage (e.g. adding an electric heater, dehumidifier, or home-working shift).
- You want the flexibility to switch quickly if prices fall (fixed deals can limit that).
Remember: A tariff that’s cheapest for one flat share may not be cheapest for another—even in the same building—because of different meter setups (single-rate vs Economy 7) and payment methods.
Costs, exclusions and common flat-share pitfalls
Fixed tariffs can work well for shared homes, but “cheap” quotes can look different once you factor in how flat shares actually run. Here are the main gotchas to check before committing.
1) Exit fees can erase a small price advantage
If the named bill payer moves out and you close the account, you may owe exit fees (often charged per fuel). Ask: What’s the fee for gas? What’s the fee for electricity? and when does the tariff end?
2) Standing charges hit even when usage is low
Some flat shares use less than expected (students out, frequent travel). In those cases, a lower unit rate may not help as much as a lower standing charge.
3) Meter type limits your options
Prepayment and Economy 7 (or other multi-rate meters) can have fewer fixed deals available. If you’re not sure what you have, check your meter display or a recent bill.
4) The “cheapest” quote may assume monthly direct debit
If you pay on receipt of bill or by cash/cheque, your available tariffs (and rates) can differ. Compare using the payment method you’ll actually use.
Two realistic scenarios (with numbers)
These examples show how “cheapest” can change depending on how long you’ll stay and how much you use. Rates are illustrative only.
Scenario A: 3-bed flat share, stable tenancy (12 months)
- Assumptions:
- Monthly direct debit, single-rate electricity, credit meters, 12 months in property.
- Estimated annual use:
- Electric 3,100 kWh; gas 10,500 kWh.
- Deal 1 (Fixed):
- Elec 26p/kWh + 55p/day; Gas 6.5p/kWh + 33p/day; exit fees £50 per fuel.
- Estimated annual cost:
- Elec £1,110.75; Gas £806.95; Total ~£1,917.70 (estimated).
If you’re confident you’ll stay the full term, the fixed price certainty may be worth it even with moderate exit fees.
Scenario B: 2-bed flat share, likely move-out in 6 months
- Assumptions:
- One tenant may leave early; account might need to close/switch mid-term.
- Estimated use (6 months):
- Electric 1,400 kWh; gas 4,500 kWh.
- Deal 2 (Fixed, “cheapest” rate):
- Slightly lower unit rates but exit fees £150 per fuel.
- Exit-fee risk:
- Leaving early could add £300 (gas + electric), which can outweigh the unit-rate saving.
In short tenancies, a “not quite the cheapest rate” fixed tariff with low/no exit fees can be the cheaper overall choice.
Flat-share admin checks (quick)
- Account name: agree who will be the bill payer and keep their email/phone current.
- Meter readings: take readings on move-in and move-out day (photo is ideal).
- Deposit/arrears: if the current account has debt, it can complicate switching.
- Landlord/agent restrictions: in most cases you can choose your supplier if you pay the bills, but check your tenancy agreement and any inclusive-bills arrangements.
What “fixed” does (and doesn’t) mean
A fixed tariff typically fixes your unit rates and standing charges for the term, but your monthly direct debit can still change if your supplier reassesses usage or you build up credit/debit.
Important: If you have a prepayment meter and you’re in debt to your current supplier, switching can be restricted until the debt is repaid or managed. If you’re struggling, see Citizens Advice guidance on energy supply and debt.
FAQs: fixed energy tariffs for UK flat sharers
1) Can we put all flatmates on the energy bill?
Usually, suppliers have one named account holder. Some may note additional contacts, but the account holder is typically responsible for payment and making changes. For disputes, it’s best to keep a written agreement between flatmates about splitting bills.
2) If one person moves out, do we have to end the fixed tariff?
Not always. If the household stays in the same property, you may be able to keep the account open and update contact details. But if the account holder leaves and wants to close the account, you might need to switch or set up a new account—potentially triggering exit fees.
3) Is a 24-month fix a bad idea for shared houses?
It can be risky if you expect changes. Longer fixes may have higher exit-fee exposure. They can still work if you’re confident you’ll remain in the property and the overall estimated annual cost is genuinely lower.
4) What’s cheaper for flat sharers: dual fuel or separate suppliers?
Dual fuel can be simpler (one supplier, one login) but isn’t automatically cheaper. Compare the combined estimated annual cost either way. Some homes are electricity-only (no gas), in which case “dual fuel” won’t apply.
5) We don’t know our usage yet—how do we compare accurately?
Start with an estimate based on property size and occupancy, then update once you’ve seen a bill or smart-meter data. The key is to compare tariffs using the same assumptions so you can see which is cheaper under a consistent scenario.
6) Can a landlord stop us switching energy supplier?
If you’re responsible for paying the energy bills, you can usually choose the supplier, but tenancy agreements can vary and some rentals have bills included. If you’re unsure, check your agreement and see guidance from Citizens Advice.
7) Do fixed tariffs protect us from price cap changes?
A fixed tariff typically keeps your rates the same during the term (subject to the tariff’s terms). The Ofgem price cap applies to standard variable tariffs, and cap levels can change. A fix can be above or below the cap at different times.
8) Is a smart meter required to get the cheapest fixed deal?
Not always. Some tariffs are available without a smart meter, but smart meters can improve billing accuracy and make it easier to track usage in a shared home. Availability depends on supplier, region and meter set-up.
If you’re dealing with incorrect bills, supplier disputes or energy debt, Citizens Advice explains your options and what to do next.
Trust, methodology and sources
Page ownership
- Written by:
- EnergyPlus Editorial Team
- Reviewed by:
- Energy Specialist
- Last updated:
- June 2026
How we assess “cheapest fixed tariff” for flat sharers
We treat “cheapest” as lowest estimated total cost for a specific household profile, while accounting for flat-share realities (tenancy changes, bill payer changes, and admin burden). On this page, we focus on decision factors you can verify before switching.
- Total estimated annual cost: unit rates + standing charges, using stated usage assumptions.
- Eligibility constraints: region, meter type (credit/prepay/smart), payment method and tariff availability.
- Risk-adjusted value: likely early exit costs in shared homes (exit fees per fuel, term length).
- User practicality: billing clarity, ease of submitting readings, and account management.
Limitations: Tariff prices change and can be withdrawn quickly. Estimated costs depend on accurate usage and the rates available for your postcode and meter. Always confirm tariff details, exit fees and end dates in the supplier’s documentation before you agree to switch.
Independent UK sources we use
Ready to find a fixed deal that works for your flat share?
Compare whole-of-market fixed tariffs by postcode, then shortlist options with exit fees and billing that won’t cause stress when tenants change.
EnergyPlus provides comparisons based on available tariffs and your details. Always review supplier terms, including exit fees and eligibility, before you switch.
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