When a fixed energy deal ends, many households are moved onto their supplier's standard variable tariff (SVT), which is often more expensive. This checker uses your current unit rates and standing charges, plus your tariff end date if you know it, to give you a simple "likely SVT" or "possibly fixed" result. It's based on typical rate ranges and your answers—your bill or online account will confirm your actual tariff.
SVT checker
Use your current rates and tariff end date to see whether you're likely on a standard variable (default) tariff or possibly still on a fixed deal.
Frequently asked questions
- What is a standard variable tariff (SVT)?
- A standard variable tariff is your supplier's default rate when you're not on a fixed deal. The rate can go up or down when the supplier changes its prices. Many people end up on an SVT after a fixed contract ends, and it is often more expensive than fixed deals you can get by comparing.
- How do I know if my fixed deal has ended?
- Your supplier should have written to you before the end of your fixed term. You can also check your latest bill or online account for the tariff name and end date. If you're unsure, the SVT checker can help you interpret your current rates based on typical patterns.
- Where do I find my unit rate and standing charge?
- They are on your energy bill, usually in pence per kWh (unit rate) and pence per day (standing charge). You may see separate figures for electricity and gas. Your online account or the supplier's app often shows the same information.
- What should I do if the checker says I'm likely on an SVT?
- It's worth comparing deals to see what fixed (and other) tariffs are available for your usage and area. Switching to a new fix can give you price certainty; savings depend on your current rate and the offers available at the time.
- Is the checker accurate?
- The checker uses simple rules based on typical rate ranges and the information you give. It can't see your actual tariff name, so treat it as a guide. Your bill or supplier can confirm whether you're on a fixed or variable tariff.
- Does it matter if I have gas as well as electricity?
- You can enter gas rates if you have them; the result is driven mainly by your electricity rates and whether your fixed deal has ended. Gas rates can help build a fuller picture but are optional.
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