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Which Octopus Energy tariff should I choose: Flexible, Fixed, Tracker or Agile?

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UKUpdated 6 October 2026 · Written by BuyMeWhiskey Editorial Team · How we check facts

Flexible Octopus is price capped with no exit fees, a Fixed tariff locks prices for 12 or 18 months but may charge exit fees, and Tracker or Agile follow wholesale prices daily or half-hourly and suit homes that can shift their energy use.

Look up the current Ofgem price cap rates for your region, then compare them with your Octopus quote using your own annual kWh.

Ofgem price cap rates by region

The main Octopus tariff types

We've left out unit prices because they change often. Get live quotes from Octopus and compare them with the Ofgem cap figures below.

Flexible Octopus is Octopus's standard variable tariff. Its prices can rise or fall every three months in line with wholesale prices, and there are no exit fees. Because it's a standard variable tariff, it's protected by Ofgem's price cap.
Octopus Fixed locks your prices for 12 or 18 months. Octopus says exit fees might apply if you leave early. Fixed tariffs are not covered by the price cap.
Octopus Tracker changes price every day, based on an independently published wholesale price. It needs a smart meter, and you must already be an Octopus customer. When we checked on 6 October 2026, Octopus's "Price Cap Protect" limited the daily price to 100p/kWh for electricity and 30p/kWh for gas. Octopus itself says that's much higher than Ofgem's cap, and suggests a protected tariff like Flexible if you couldn't afford peaks.
Agile Octopus is electricity-only, with half-hourly prices tied to the wholesale market. Prices can drop below zero or spike to its 100p/kWh limit, so it suits homes that can shift a lot of use, for example with a battery.
Smart time-of-use tariffs (Intelligent Octopus Go, Go, Cosy, Flux, Snug) give cheaper periods for EVs, heat pumps, batteries or storage heaters. They need a smart meter and are worth it mainly if you can move a big share of your use into the cheap hours.

How the price cap fits in

Ofgem's price cap limits the unit rate and standing charge that suppliers can charge on standard variable tariffs. It doesn't limit your total bill. It's reset every 3 months. For 1 October to 31 December 2026, average Direct Debit cap rates across England, Scotland and Wales are 26.32p/kWh for electricity with a 54.83p daily standing charge, and 7.97p/kWh for gas with a 29.68p daily standing charge. That's equivalent to £1,723 a year for a typical household, 4% higher than the previous quarter. VAT has been removed from electricity from 1 October 2026 to 31 March 2027, and gas still carries 5%. Your own rates depend on your region, payment method and meter.

Should you fix?

Citizens Advice puts it simply. A fix might save money over the year if prices stay the same or rise, but a variable tariff could work out cheaper if prices fall. Nobody can reliably predict which will happen, so it comes down to how much you value certainty compared with flexibility. Compare any fix with the current cap rates using your own annual kWh from your bill or app, and check the exit fee.

Switching rules that protect you

You can switch without an exit fee in the last 49 days of a fixed tariff. On a standard variable tariff you can switch at any time.
When a fix ends and you do nothing, you'll usually move to your supplier's standard variable tariff (for Octopus, that's Flexible).
Switches between suppliers must happen within 5 working days, or the new supplier must automatically pay you £40. You can cancel within 14 days.

If something goes wrong

Complain to Octopus first. If it isn't sorted within 8 weeks, or you get a deadlock letter, you can take it to the free Energy Ombudsman. It can tell a supplier to put things right, apologise or pay a financial award.

Typical annual cost at Oct–Dec 2026 cap rates (Direct Debit)

Worked example

What a typical home pays at the October–December 2026 cap. This uses Ofgem's typical consumption values of 2,500 kWh of electricity and 9,500 kWh of gas a year, at average Direct Debit cap rates.

Electricity units: 2,500 × 26.32p = £658.00
Electricity standing charge: 365 × 54.83p = £200.13
Gas units: 9,500 × 7.97p = £757.15
Gas standing charge: 365 × 29.68p = £108.33
Total ≈ £1,723.61 a year, which matches Ofgem's £1,723 figure.

Now suppose a 12-month fix quote for the same usage came to £1,700 a year (an illustrative number, not a real tariff). It would be £1,723.61 − £1,700 = £23.61 cheaper than today's cap rates. That's a small margin, and the cap could go up or down at each quarterly review. So the real question is whether £23.61 of possible saving and price certainty is worth the exit fees and the chance that the cap falls. Do the same sum with your own kWh to see how a fix or a smart tariff compares for you.

Is the Flexible Octopus tariff price capped?#

Yes. Flexible Octopus is Octopus's standard variable tariff, and Ofgem's price cap protects standard variable tariffs. The cap limits the unit rate and standing charge, not your total bill, and is reset every 3 months. Fixed tariffs aren't covered.

Should I start a new Octopus fixed rate deal or stay on Flexible?#

A fix gives certainty and may save money if prices stay the same or rise, while Flexible has no exit fees and could be cheaper if prices fall. Add up a fix quote using your own annual usage and compare it with the current cap rates. Check whether exit fees apply.

My Octopus fix is ending: what do I do next?#

You can switch tariff or supplier without an exit fee in the last 49 days of your fix. If you do nothing, you'll usually move to the standard variable tariff, which for Octopus is Flexible and is price capped. Compare the renewal offers with Flexible before your fix ends.

Is Octopus Tracker or Agile still worth it?#

They can work out cheaper when wholesale prices are low, but you take on the market's ups and downs directly. Tracker changes daily and Agile changes half-hourly, and their protective limits are far above Ofgem's cap. They suit homes that can cut use on expensive days or shift it to cheap periods.

Why are standing charges going up?#

Standing charges sit inside Ofgem's price cap, which is worked out from costs such as building and improving the energy network, government schemes and suppliers' running costs, so when those costs rise the capped standing charge can rise too. They also vary by region, depending on things like how many people live there and the cost of the local network. For October to December 2026 the average Direct Debit electricity standing charge cap is 54.83p a day: it looks lower than July's 57.19p only because VAT was removed, and without VAT the July figure would have been about 54.47p, so it actually rose slightly. Gas went from 29.04p to 29.68p a day.

What compensation can I expect from Octopus?#

If a supplier switch takes longer than 5 working days, the new supplier must automatically pay you £40. For other problems, complain to Octopus first. After 8 weeks or a deadlock letter, the Energy Ombudsman can tell the supplier to fix things, apologise or pay a financial award.

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Sources

Figures checked against these sources on 6 October 2026. If a rule changes, we update the page and its date.

General information, not personal financial advice. Rules depend on your circumstances; check the official source or speak to a regulated adviser before acting.