Can I get a cheaper energy tariff when my fix ends?
Yes, often you can — but the best move depends on when your fixed deal ends, your meter type and payment method, and whether your supplier has already lined you up for a pricier follow-on tariff. This guide shows your options and the simplest way to compare whole-of-market tariffs in the UK.
- What happens at the end of a fix (and the “default” tariff you may move to)
- When to compare and switch (including exit fees and timelines)
- Realistic examples with estimated numbers and common pitfalls to avoid
Estimates only. Tariffs, availability and exit fees vary by supplier, region, meter type and payment method.
Fast answer: yes — compare before you drop onto a default tariff
When your fixed energy deal ends, your supplier will normally move you onto another tariff (often a standard variable tariff, sometimes called a default tariff). That can be more expensive than the best deals available to you at the time, so it’s usually worth comparing whole-of-market tariffs before your end date.
Key point: In many cases you can start a switch up to 49 days before your fixed term ends without paying an exit fee — but check your contract and supplier terms.
If your fix ends soon
Compare now so you have time to switch without rushing — especially if you need a smart meter setup or have a complex meter.
If you’re already out of contract
You can usually switch with no exit fee. The main risk is staying on a higher default tariff longer than necessary.
If you have a prepayment meter
Options can be more limited, but there may still be cheaper tariffs. Confirm whether your meter is traditional key/card or smart prepay.
- What you can do today
- Find your fix end date, check for exit fees, gather your annual usage (kWh) and compare like-for-like tariffs based on your meter and payment method.
- What not to assume
- That your supplier’s renewal quote is the cheapest, or that switching always saves money. Prices move and deals vary by region and profile.
Compare whole-of-market tariffs (without guesswork)
The cheapest tariff for you depends on details that change the unit rates and standing charges you’re offered. To compare accurately, use:
- Postcode (prices vary by region)
- Payment method (Direct Debit, cash/cheque, prepay)
- Meter type (single-rate, Economy 7, smart, prepay)
- Estimated annual usage (kWh) for gas and electricity (most accurate)
Tip: If you don’t know your kWh usage, look at your latest bill/app. If you only have £ amounts, you can still start — but results will be less precise.
When should I start comparing?
- 49 days before your fix end date: a common point where exit fees often no longer apply, but always confirm in your contract.
- 14–21 days before the end date: good time to lock in a new tariff so your switch completes around the end of your current deal.
- Any time if you’re out of contract: switching can usually start immediately.
Get a quote (takes a few minutes)
Share a few details and we’ll help you compare tariffs. We use your info to provide your quote and support your switch.
What happens when your fixed tariff ends?
Most households don’t get cut off or lose supply. Instead, if you do nothing, your supplier typically moves you onto a standard variable tariff (SVT) or another “default” tariff. SVTs are usually covered by the Ofgem price cap (where applicable), but that doesn’t automatically make them the cheapest option for your home.
You should receive a renewal notice
Suppliers usually contact you ahead of the end date with renewal options and what you’ll pay if you don’t choose one. Keep the letter/email — it contains your end date and key tariff details.
Exit fees may apply before the end date
Some fixed tariffs charge an exit fee if you leave early. Many waive this within a set window (often up to 49 days), but it’s not universal.
Your new rate isn’t just “the price cap”
The cap is set per unit rate/standing charge and varies by region and payment method. Your SVT can still be higher than some fixed tariffs — or lower than others — depending on the market.
If you rent: you can usually switch supplier if you pay the energy bills and your name is on the account. If bills are included in rent, the landlord/agent may control the tariff choice.
Two realistic scenarios (with estimated numbers)
These examples are illustrative to show how the decision can work. Actual quotes depend on your exact rates, region and usage.
Scenario A: fixed ends, SVT looks higher
Assumptions: Dual fuel, Direct Debit, typical usage (electricity 2,700 kWh/year, gas 11,500 kWh/year). Current fix ends in 2 weeks.
- Supplier renewal: move to SVT estimated at £1,820/year
- Best comparable fix found: estimated at £1,710/year for 12 months
- Estimated difference: ~£110/year (about £9/month)
What this suggests: If you can switch without exit fees, comparing before the end date could reduce your costs — but check whether the fixed tariff has higher standing charges that affect low usage homes.
Scenario B: exit fee makes waiting sensible
Assumptions: Electricity only flat, Direct Debit. Fix ends in 90 days. Exit fee is £75.
- Switch now to a new fix: saves an estimated £6/month versus your current fix
- But you would pay £75 to leave early
- Break-even: £75 ÷ £6 ˜ 12.5 months
What this suggests: It may be better to wait until you’re inside the no-exit-fee window (often up to 49 days), unless the new tariff is substantially cheaper or you expect prices to rise.
Your options when a fix ends (compare like-for-like)
This table focuses on the most common household choices in Great Britain. The “best” option depends on your risk tolerance (price certainty), your usage, and tariff availability for your meter/payment type.
| Option | Pros | Cons / watch-outs | Who it tends to suit |
|---|---|---|---|
| Do nothing (move to SVT) | No setup, flexible, usually no exit fees. | Often not the cheapest; prices can change; you may forget to review. | Short-term or if you’re about to move home. |
| Renew with your current supplier | Easy; may offer loyalty/online options; no switch admin. | Renewal offers may not be market-leading; check term length and exit fees. | People who value convenience but still want some certainty. |
| Switch to a new fixed tariff | Price certainty for the term; can be cheaper than SVT. | May include exit fees; if prices fall, you could miss out. | Budget planners; households who dislike price changes. |
| Switch to a variable tracker (if available) | May follow a published index; can reduce if the index falls. | Bills can rise; terms vary; not always widely available. | People comfortable with movement who still want a defined pricing method. |
Decision checklist (quick)
- Do you know your fix end date?
- Is there an exit fee and when does it stop applying?
- What meter do you have (single rate / Economy 7 / smart / prepay)?
- Do you pay by Direct Debit (often cheapest) or another method?
- Are you comparing by annual cost based on your kWh usage (not just monthly DD)?
- Have you checked the standing charge as well as the unit rate?
Who switching tends to suit (and who it doesn’t)
Often suits you if:
- You’re about to move onto an SVT
- Your usage is stable and you want predictability
- You can pay by Direct Debit
- You’re not tied into an exit fee period
May not suit (or needs care) if:
- You’re moving home very soon
- You have a large exit fee and small potential savings
- You’re on a complex setup (e.g. Economy 10, legacy meters)
- You’re in debt to your supplier (you can still switch in some cases, but rules apply)
Costs, exclusions and common pitfalls (UK-specific)
Exit fees
If you switch too early, you may pay an exit fee per fuel. Check your tariff info or online account. If unsure, ask your supplier for the exact end date and fee terms.
Standing charges
A low unit rate can be offset by a higher standing charge. Low-usage homes should check annual cost carefully, not just the headline rate.
Payment method differences
Direct Debit tariffs can be priced differently from cash/cheque or prepayment. Make sure you compare using the payment method you’ll actually use.
Meter type restrictions
Economy 7 tariffs have separate day/night rates; a single-rate quote may not apply. Prepayment and some legacy meters can limit tariff availability.
Switch timing
Switching is usually straightforward, but allow time for any meter reads and admin. Starting early reduces the risk of spending weeks on a default tariff.
Direct Debit amount vs tariff cost
A cheaper tariff doesn’t always mean a lower Direct Debit straight away. Suppliers may adjust payments to cover seasonal use or any balance owed.
Important: If you’re in energy debt, you may still be able to switch (rules depend on meter type and the amount owed). Citizens Advice has step-by-step guidance for your situation.
FAQs
Will my supply stop when my fixed tariff ends?
No — your energy supply continues. If you don’t choose a new deal, you’ll normally move onto your supplier’s standard variable/default tariff.
How early can I switch before my fix ends?
Many tariffs allow you to switch in the run-up to the end date without an exit fee (often up to 49 days), but this depends on your supplier and contract. Check your tariff information for the exact rule.
Is the cheapest option always a fixed tariff?
Not always. Fixed tariffs offer certainty, but sometimes an SVT or tracker can be cheaper depending on market conditions and your usage. Compare based on estimated annual cost and tariff terms, not just the label.
Do I need a smart meter to get the best deals?
Usually no. Many tariffs work with standard meters. However, some tariffs (for example, certain time-of-use or smart prepay options) may require a smart meter. Availability varies by supplier and region.
I’m on Economy 7 — can I switch like normal?
Yes, but you need an Economy 7-compatible quote because you have day and night unit rates. If you switch to single-rate without understanding your night usage, your costs could rise.
What if I’m moving house soon?
If you’re moving within weeks, it may be simpler to stay on a flexible tariff to avoid exit fees. Some suppliers let you “move” a tariff, but it’s not guaranteed and depends on the product and your new address.
Can I switch if I owe money to my supplier?
Sometimes. Rules differ depending on whether you have a credit meter or prepayment meter and how much you owe. If you’re unsure, get advice and check supplier rules before starting a switch.
Why does my Direct Debit not match the quote’s monthly cost?
Direct Debits are often set to spread costs across the year and may be adjusted for seasonal use and your account balance. A quote usually shows estimated annual cost and average monthly cost, but your supplier may set a different payment amount.
Trust, methodology and sources
Page accountability
- Written by
- EnergyPlus Editorial Team
- Reviewed by
- Energy Specialist
- Last updated
- March 2026
How we assess whether you could get a cheaper tariff
We focus on practical, UK household factors that change which tariffs you’re offered and what you’ll pay:
- Availability constraints: region (postcode), meter type (single rate/Economy 7/smart/prepay), and payment method.
- Cost comparison basis: estimated annual cost calculated from unit rates + standing charges using a stated usage assumption (kWh).
- Timing: whether an exit fee applies and the remaining term on your current fix.
- Non-price factors: contract length, exit fees, and whether the tariff is fixed, SVT, or tracker.
Limitations: We can’t guarantee you’ll see a cheaper tariff at any given moment. The market changes, suppliers withdraw deals, and the best tariff for a low-usage home may differ from a high-usage home due to standing charges.
Ready to see what you could pay after your fix ends?
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