Cheapest variable rate gas tariff for UK homes (right now)
Find the lowest estimated variable gas prices available to UK households today, and check whether a variable rate is genuinely the right fit for your meter, payment method and risk level.
- Clear explanation of what “cheapest variable rate” really means under the Ofgem price cap
- Realistic cost scenarios (with assumptions) and a comparison table to help you decide
- Quick quote form to compare whole-of-market options in minutes (no obligation)
Estimates shown are indicative and depend on your region, meter type and payment method. Always check tariff terms and unit rates before you switch.
Fast answer: what’s the cheapest variable rate gas tariff for UK homes now?
For most UK households, the “cheapest variable rate” is usually one of these:
1) A discounted variable tariff
Some suppliers price below the Ofgem cap in certain regions/payment methods. Availability changes often.
2) The supplier’s Standard Variable Tariff (SVT)
If you haven’t chosen a tariff, you’re typically on an SVT. Most SVTs sit close to the cap (but not always equal).
3) A tracker (variable, but different)
A tracker moves with a published reference (e.g., cap level). It can be cheaper than SVT, but can rise faster too.
Important: “Cheapest” depends on your region (distribution area), payment method (Direct Debit vs prepayment), and meter type (standard vs smart vs prepay). We recommend comparing your actual unit rate (p/kWh) and standing charge (p/day), not just a headline annual estimate.
Key takeaways (quick read)
- Variable gas tariffs can change (typically with supplier updates and/or the cap), so today’s cheapest may not stay cheapest.
- If you want price certainty, a fixed tariff may suit you better even if it’s slightly higher right now.
- The best way to find the cheapest variable option for your home is to compare by postcode + payment method.
Compare variable gas tariffs for your home
Tell us a bit about your household and we’ll show whole-of-market options you may be eligible for. We’ll highlight variable tariffs, trackers and SVT alternatives so you can make an informed choice.
What you’ll need: your postcode and contact details. If you have it, your latest bill helps (unit rate + standing charge), but it’s not required.
What counts as a “variable rate” here?
We use “variable” to mean tariffs where prices can change during the contract (including SVTs and some trackers). We’ll always show the tariff type in results so you can compare like-for-like.
Get your quote
Variable vs fixed vs tracker: what’s cheapest depends on what you need
Price is only part of the decision. The table below shows how tariff types typically differ for UK households. Individual suppliers’ terms vary.
| Tariff type | How prices move | Good for | Watch outs |
|---|---|---|---|
| Standard Variable (SVT) | Supplier can change rates; usually close to the Ofgem cap level | Flexibility, no exit fees on most SVTs, easy to leave | Can be beaten by discounted variable deals; price can rise with cap changes |
| Discounted Variable | Variable, often set below SVT/cap (sometimes for a limited period) | People who want flexibility but still want to try for a lower rate | Discounts/terms can change; may exclude prepay or certain regions |
| Tracker | Moves with a published reference (e.g., cap level); can change frequently depending on rules | People comfortable with changing bills and monitoring the market | May rise quickly; some have exit fees; needs close attention |
| Fixed | Unit rate + standing charge fixed for the term (e.g., 12 months) | Budgeting and certainty; households worried about winter spikes | Often has exit fees; you might miss future price drops |
Decision checklist: who a variable gas tariff suits (and who it doesn’t)
A variable gas tariff may suit you if…
- You want flexibility to move quickly if a better deal appears.
- You’re happy to keep an eye on prices and switch again if needed.
- You’re on an SVT and suspect there may be a discounted variable available for your postcode/payment method.
- You’re between fixes (e.g., moving home) and want a short-term option.
A variable gas tariff may not suit you if…
- You need stable monthly bills and would struggle if rates rise.
- You prefer a “set and forget” approach and don’t want to review tariffs.
- You’re on a tight budget where winter price rises could cause arrears.
- You have a tariff with a significant exit fee (some trackers/discounted variables do).
Two realistic cost scenarios (illustrative)
These examples show why “cheapest variable” depends on your exact rates and usage. They are not quotes. We use round numbers to keep it clear.
Scenario A: average-ish gas user, pays by Direct Debit
- Assumed annual gas use
- 12,000 kWh
- Assumed standing charge
- 35p/day (≈ £127.75/year)
- Compare two variable options
-
- SVT example: 7.2p/kWh → usage cost ≈ £864
- Discounted variable example: 6.6p/kWh → usage cost ≈ £792
Estimated annual difference on usage: about £72 (plus standing charge is the same in this example).
If the discounted tariff later increases by 0.6p/kWh, that advantage could disappear. Variable prices can change.
Scenario B: low gas user in a flat (standing charge matters more)
- Assumed annual gas use
- 6,000 kWh
- Option 1 (lower unit rate, higher standing charge)
- 6.5p/kWh + 40p/day (≈ £146/year)
- Option 2 (higher unit rate, lower standing charge)
- 6.9p/kWh + 30p/day (≈ £110/year)
- Estimated annual cost
-
- Option 1: (6,000×£0.065)=£390 + £146 ≈ £536
- Option 2: (6,000×£0.069)=£414 + £110 ≈ £524
Even though Option 1 has a lower unit rate, Option 2 is cheaper overall because the standing charge is lower.
Tip: If you know your annual kWh, you can estimate annual cost as: (unit rate × annual kWh) + (standing charge × 365). This is how many comparisons calculate “estimated annual cost”.
Costs, exclusions and common pitfalls (UK-specific)
Variable tariffs can be a good short-term choice, but the details matter. Here are the most common reasons a “cheap” variable deal isn’t actually cheapest for a given household.
Standing charge surprises
If you’re a low user (e.g., gas only for cooking), a higher standing charge can outweigh a lower unit rate.
Payment method restrictions
Some of the best variable rates are for monthly Direct Debit. Prepayment and pay-on-receipt options can differ.
Regional pricing differences
Gas network costs vary by region, so a tariff that’s “cheap” in one area may be mid-table in another.
Tracker rules vary
Some trackers update monthly; others can update more frequently. Always check how the reference is defined and when it can change.
Exit fees (not just for fixed)
Most SVTs have no exit fee, but some discounted variable or tracker tariffs can include them. Check before switching again.
Dual fuel vs gas-only pricing
Some deals price better when you take gas and electricity together. If you’re comparing gas-only, make sure you’re seeing the right offer.
Don’t rely on a single “annual cost” figure. Suppliers and comparisons estimate annual cost using typical consumption assumptions. If your home uses more/less than typical, your cheapest option can change.
FAQs
Is the cheapest variable rate always the Ofgem price cap?
No. The Ofgem cap sets a maximum for certain default tariffs (like SVTs) for typical payment methods and meter types. Some suppliers price below it, and some tariff types (like fixed deals) aren’t capped in the same way.
Can I get a variable gas tariff with a prepayment meter?
Often yes, but the choice can be more limited and prices can differ versus Direct Debit. If you have a smart prepay meter, more options may be available than with older key meters, depending on supplier.
Are variable tariffs cheaper in summer and more expensive in winter?
Your usage is usually higher in winter, which makes bills rise. The unit rate on a variable tariff can change at other times too (for example when cap levels update or if a supplier changes their SVT rates).
Will switching gas supplier interrupt my gas supply?
In most cases, no. Switching is administrative. Your gas comes through the same pipes, and you keep the same meter. Delays can happen if there’s a data issue (e.g., meter details), or if you have debt arrangements with certain meters.
How do I check my current gas unit rate and standing charge?
Check your latest bill (or online account). Look for unit rate (p/kWh) and standing charge (p/day). If you’re on an SVT, it may be labelled “standard”, “default”, or similar.
What if I rent my home—can I switch gas tariff?
Usually yes, if you pay the energy bills. You don’t need the landlord’s permission to switch supplier. If bills are included in rent or you’re on a communal heating setup, your options may be limited.
Can a variable tariff have an exit fee?
Yes. While many SVTs have no exit fees, some discounted variable tariffs and trackers can include them. Always check the tariff information before you apply.
Is it better to switch gas-only or dual fuel?
It depends. Dual fuel can sometimes be cheaper overall, but not always. Compare both routes: gas-only and dual fuel, and look at the combined cost including both standing charges.
How we assess “cheapest variable rate” (methodology)
What we compare
- Unit rate (p/kWh) for gas
- Standing charge (p/day)
- Tariff type (SVT, discounted variable, tracker, fixed)
- Eligibility (payment method, meter type, region)
- Fees/terms (exit fees, discounts, duration, update rules)
How “cheapest” is calculated
When we show estimated annual costs, we use the common approach:
(unit rate × annual kWh) + (standing charge × 365)
Where annual kWh comes from either your input, your bill, or a typical consumption estimate if you don’t know your usage.
Limitations (important)
- Variable rates can change after you join; estimates are a snapshot.
- Not all tariffs are available in all regions or for all meter/payment types.
- Some offers bundle features (e.g., app rewards) that don’t affect unit rates but may influence value.
- If your usage differs from typical, “cheapest” can change—especially due to standing charges.
Editorial trust signals
Sources (UK)
- Ofgem energy price cap information
- Citizens Advice: energy supply and switching guidance
- GOV.UK: switching energy supplier overview
Transparency: EnergyPlus is a whole-of-market comparison service for households. Availability and pricing can change quickly. We aim to keep this guide current, but you should always confirm rates and key terms on the tariff details before completing a switch.
Ready to check the cheapest variable gas rates for your postcode?
Compare variable, tracker and fixed options side-by-side, with clear unit rates and standing charges.
Accessibility note: If you’d rather not use the form, you can still navigate this guide using the “On this page” links above.
Back to Guides & FAQs