When are fixed energy tariffs ending in the UK?

Fixed energy tariffs end on the contract end date shown by your current supplier. Many fixed deals have end dates spread throughout the year, so check your latest bill or online account to see exactly when your fix finishes. If you’re within around 49 days of the end date, you can usually line up a new deal without exit fees.

Should I switch energy supplier before my fixed tariff ends?

If your fixed deal is ending soon, comparing options early can help you avoid being moved onto a higher-priced standard variable tariff (SVT). Many suppliers allow you to switch or lock in a new tariff shortly before your end date. Use your annual usage (kWh), current unit rates and standing charges to compare like-for-like and choose the best overall cost.

Will I pay an exit fee if I switch before my fixed tariff ends?

Some fixed energy tariffs include exit fees if you leave early. However, in many cases you can switch without paying exit fees when you’re close to the end of your contract (often within about 49 days). Check your tariff terms or ask your supplier to confirm any fees before you start a switch.

What happens when my fixed tariff ends?

If you don’t choose a new tariff, you’ll usually be moved automatically onto your supplier’s standard variable tariff (SVT). SVTs can change when prices change, so your monthly cost may go up or down. Switching or selecting a new fixed tariff can provide price certainty for a set period.

Is it better to choose a fixed or variable energy tariff right now?

A fixed tariff can protect you from price rises for the length of the deal, which can help with budgeting. A variable tariff can offer flexibility and may fall if market prices drop, but it can also rise. The best choice depends on your risk tolerance, how long you want price certainty, and whether the fixed deal offers competitive unit rates and standing charges versus the SVT.

How long does it take to switch energy supplier in the UK?

Switching typically takes a few days to a couple of weeks, depending on the supplier and your circumstances. You won’t lose supply during the switch. To avoid disruption in pricing, start the process before your fixed tariff ends (especially if you want the new tariff to begin as soon as your current deal finishes).

What information do I need to switch to a new energy deal?

To compare and switch accurately, you’ll typically need your address and postcode, current supplier and tariff, whether you pay by Direct Debit, your annual electricity and/or gas usage in kWh (or a recent bill), and your meter type (standard, smart, or prepayment). Having this ready helps you get a like-for-like quote and reduces delays.

Can I switch if I have a smart meter or a prepayment meter?

In many cases, yes. Smart meters can usually stay in place when you switch, and many suppliers support smart functionality. Switching with a prepayment meter may be possible but can be more limited depending on suppliers and credit checks. Check eligibility during the quote process.

How do I avoid being moved to a higher-priced standard tariff when my fix ends?

Mark your contract end date and start comparing tariffs in advance. If exit fees apply, time your switch so the new tariff starts when your current fixed deal ends (or during any fee-free switching window). Choosing a new fix or a competitive tariff before your end date is the simplest way to avoid an automatic move to an SVT.

Where can I compare and switch to a new fixed energy deal?

You can compare available tariffs and switch online. For the latest options and to secure a new deal, start here: https://www.energyplus.co.uk/

Fixed energy tariff ending soon? How to switch for a deal in the UK

If your fixed tariff is ending, you’ll usually move to your supplier’s Standard Variable Tariff (SVT) unless you choose a new fix. This guide explains what happens next, how to compare deals safely, and what to check (exit fees, meter type, payment method and eligibility) before you switch.

Know your end date and any exit fees before you act
Compare like-for-like using unit rates, standing charges and contract length
Switching is usually straightforward, but timings and eligibility vary by supplier

Get your energy quote How switching works

Estimates only. Tariffs, availability and eligibility vary by region, meter type and payment method. Always check supplier terms (including exit fees) before you switch.

Fast answer: what to do when your fixed tariff ends

In the UK, when a fixed energy tariff ends you’ll typically be moved onto your supplier’s Standard Variable Tariff (SVT) unless you agree a new deal. The SVT is capped by Ofgem’s price cap (for typical use), but it may be higher than a competitive fixed tariff available to new or switching customers.

Your quick action plan (15 minutes)

Find your end date and any exit fee in your online account or contract.
Note your meter type (credit/prepay, smart, Economy 7/10) and payment method (Direct Debit/card).
Compare deals using unit rates + standing charges (not just the “monthly” figure).
Switch in time: many suppliers let you lock a tariff in before your fix ends, but rules vary.

Key takeaways (UK-specific)

SVT isn’t “bad” by default — it can be a sensible short-term option if fixes look expensive or you need flexibility.
Exit fees matter: some fixes charge if you leave early; others have £0 exit fees.
Payment method changes prices: Direct Debit tariffs can differ from pay-on-receipt or prepay.
Meter type changes eligibility: Economy 7/10, smart meter mode, and prepay can limit deals.

Important: A cheaper “monthly cost” estimate can hide higher standing charges or optimistic usage assumptions. Always compare unit rates (p/kWh), standing charges (p/day), and the contract length.

Compare fixed deals before you roll onto SVT

If your fix ends soon, the main decision is whether to choose a new fixed tariff (for price certainty) or stay on SVT (for flexibility) while you watch the market. EnergyPlus compares whole-of-market home energy tariffs where available, helping you weigh up realistic options based on your details.

What you’ll need (helps accuracy)

Postcode (to match regional standing charges and rates)
Whether you have gas, electricity, or both
Payment method (e.g., monthly Direct Debit)
Meter type: smart / standard / Economy 7 / prepay
Approx usage (kWh) or recent bills (optional but best)

About “switch deals”: Some tariffs are available only to new customers, certain regions, or specific meter types. We’ll show eligibility notes where we can, but the supplier’s terms are definitive.

Get your personalised quote

Fill in your details and we’ll help you compare options. We’ll use your postcode to match regional pricing and your contact details to share your results.

How switching works when your fix is ending

1) You choose a tariff

You can switch supplier or stay with your current one. Check contract length, payment method, and whether prices are fixed for energy only or include other conditions.

2) Switching starts

Most switches complete without interruption. If you have a smart meter, it should continue to operate, but smart features can vary between suppliers.

3) Final bill & opening read

Provide meter readings if asked (or they’re taken automatically). This helps ensure your final bill and your new account start correctly.

If your tariff end date is very close: you can still compare now, but be aware you may briefly be on SVT between deals depending on processing times and supplier start dates.

Fixed vs SVT: a practical comparison (UK homeowners & tenants)

Use this table to decide what to do when your fixed tariff is ending soon. The “right” choice depends on your appetite for price certainty, exit fees, and how likely you are to move home or change usage.

Decision factor	New fixed tariff	Standard Variable Tariff (SVT)	Best for…
Price certainty	Rates usually fixed for the term (standing charge may also be fixed depending on tariff terms).	Rates can change. Typically aligned with Ofgem’s cap changes.	Budgeting and avoiding surprise increases.
Flexibility	May include exit fees and/or limited changes before the term ends.	No fixed term; you can switch away at any time.	Moving home soon or wanting to wait and watch prices.
Exit fees	Common on fixed deals (check per fuel and per meter).	Usually none.	Households that might need to switch again quickly.
Eligibility	May depend on postcode region, meter type (e.g., Economy 7), and payment method.	Typically available to all customers of that supplier.	People with complex meters may have fewer fixed options.
Potential cost	Could be lower or higher than SVT depending on market pricing at the time you lock it in.	Follows capped levels (for typical consumption), but your bill depends on your usage and region.	Anyone who wants to avoid exit fees and reassess later.

Who a new fixed deal often suits

You want predictable bills and prefer certainty
You’re staying put for 12+ months
The fix is competitive once you compare unit rates and standing charges
You’re happy with the exit fees (or there are none)

Who should be cautious about fixing

You may move home (tenancy ending, sale pending)
Your usage is changing (new baby, working from home, heat pump)
You’re on prepay or Economy 7 and choice is limited
You’d likely switch again soon if prices fall (exit fees could wipe out gains)

Two realistic scenarios (with numbers you can sanity-check)

These are illustrative examples to show how the maths works. Your actual price depends on region, supplier, payment method and meter type.

Scenario A: Dual fuel, typical usage, switching to a 12-month fix

Assumptions: Electricity 2,900 kWh/year, gas 12,000 kWh/year, monthly Direct Debit. Illustrative SVT vs fix rates below (not market averages).
Illustrative SVT pricing: Elec 25p/kWh + 55p/day; Gas 6.5p/kWh + 30p/day.
Illustrative fixed pricing: Elec 23p/kWh + 50p/day; Gas 6.2p/kWh + 28p/day; £0 exit fees.
Estimated annual cost (energy + standing charges): SVT: ~£1,746/year. Fix: ~£1,602/year. Difference: ~£144/year (estimate).

Why it can help: the fix reduces both unit rates and standing charges. If the fix had an exit fee, the benefit could shrink if you leave early.

Scenario B: Electricity-only flat, short tenancy, SVT might be sensible

Assumptions: Electricity 1,800 kWh/year, monthly Direct Debit, moving in 6 months.
Illustrative SVT pricing: Elec 25p/kWh + 55p/day.
Illustrative fixed pricing: Elec 24p/kWh + 55p/day, but with a £75 exit fee if you leave before 12 months.
Estimated cost over 6 months: SVT: ~£274 (energy) + ~£100 (standing) = ~£374. Fix: ~£264 + ~£100 + £75 exit fee = ~£439 (estimate).

Why it matters: even if the fixed unit rate is slightly lower, the exit fee can make it worse for short stays.

Tip: To replicate these calculations, estimate annual kWh cost = (kWh × unit rate) + (standing charge × 365). Then scale if you’re thinking about a shorter period.

Costs, exclusions and common pitfalls when switching (UK)

1) Exit fees (and when they apply)

Fixed tariffs often charge exit fees if you leave early (sometimes per fuel). Check your contract and whether the fee is waived near the end date. Supplier policies vary, so confirm before you switch.

2) Economy 7 / multi-rate meters

Economy 7/10 tariffs have separate day/night rates. A deal that looks cheap on a single-rate comparison might not be cheaper for your usage pattern.

3) Prepayment meters (PPM)

Prepay customers can have fewer fixed options and different pricing. If you’re considering moving from prepay to credit, eligibility checks and timelines can apply.

4) Direct Debit vs pay on receipt

Many tariffs assume monthly Direct Debit. If you pay quarterly or on receipt, compare only tariffs available for your payment method to avoid mismatched pricing.

5) “Green” and add-on claims

Some tariffs include renewable electricity matching or carbon offsets. Look for clear supplier documentation and check what’s included (and what costs extra).

6) Debt, switching blocks and final bills

If you’re in debt to your current supplier, switching may be restricted in some cases. Take meter readings when requested to avoid billing disputes.

Don’t get caught out: “No standing charge” tariffs can have higher unit rates, and some deals have limited eligibility. Always read the Key Facts / tariff information before committing.

FAQs: fixed tariffs ending soon (UK)

1) What happens if I do nothing when my fixed tariff ends?

You’ll usually move onto your supplier’s Standard Variable Tariff (SVT). Your supply won’t stop, but your rates may change. You can still switch later.

2) Can I switch before my fixed tariff ends?

Often yes, but check exit fees and whether your supplier waives them near the end of your term. If you’re close to the end date, it may be possible to lock in a new tariff to start when your current one finishes, depending on the supplier.

3) How do I compare tariffs properly (not just the monthly cost)?

Compare unit rates (p/kWh), standing charges (p/day), tariff length, and any exit fees. Ensure you’re comparing the same meter type (single-rate vs Economy 7) and payment method.

4) Is it better to fix for 12, 18 or 24 months?

It depends on the price level you’re fixing at and how long you need certainty. Longer fixes can protect you from increases but can be harder to leave (exit fees). If you’re likely to move or change usage, a shorter fix or SVT may be more suitable.

5) Will switching affect my smart meter?

Your smart meter should keep measuring usage, but smart functions (like automatic reads or in-home display features) can vary by supplier and setup. If you rely on smart features, check with the new supplier before switching.

6) I’m on a prepayment meter — can I still switch?

Usually yes, but your tariff choice may be more limited and pricing can differ. If you have outstanding debt, switching rules can apply. Compare prepay-specific tariffs and check eligibility carefully.

7) Do I need my annual kWh usage to switch?

Not always, but it improves accuracy. You can find usage on recent bills, in your online account, or on your annual statement. If you don’t have it, an estimate can work, but treat savings figures as approximate.

8) Can I switch if I rent (tenant) rather than own?

In many cases, yes — if you pay the energy bills and you’re the account holder. If bills are included in rent or the landlord is responsible for the supply contract, you may not be able to change supplier.

9) Is SVT protected by the Ofgem price cap?

The Ofgem cap limits the unit rates and standing charges suppliers can charge for default tariffs for typical consumption assumptions. Your bill still depends on how much energy you use and your regional rates.

If you’re struggling to pay: you may be eligible for support (payment plans, emergency credit for prepay, Priority Services Register for extra help). Start with Citizens Advice for guidance.

Trust, methodology and sources

Page governance

Written by: EnergyPlus Editorial Team
Reviewed by: Energy Specialist (UK retail energy)
Last updated: March 2026

How we assess “a good switch deal” when your fix ends

We focus on what changes the total expected cost and the risk of switching again:

Total cost components: unit rates, standing charges, and any incentives that have clear terms.
Tariff structure: single-rate vs Economy 7/10, dual fuel vs single fuel, and payment method pricing.
Contract terms: length, exit fees, price change clauses, and how/when the tariff ends.
Eligibility constraints: region (postcode), meter type (smart/standard/prepay), and customer status (new vs existing).
User suitability: moving home likelihood, budget sensitivity, and preference for certainty vs flexibility.

Limitations: Price cap levels, supplier pricing and availability can change. Estimated costs depend on your usage assumptions and your property’s energy consumption. Always confirm rates and fees on the supplier’s tariff information before completing a switch.

Sources (UK)

We link to regulators and trusted UK guidance to help you verify key points independently.

Ready to check your options before your fix ends?

Compare fixed tariffs available for your postcode, meter type and payment method. Get a clear view of rates, standing charges and key terms so you can decide with confidence.

Start my comparison Re-read the fast answer

Reminder: If your current fix has exit fees, check whether they apply on your switch date. If you’re unsure, contact your supplier before completing the switch.

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Updated on 20 Mar 2026