Last updated: Wednesday 23 September 2026 (Europe/London).
Next update: when Ofgem publishes the Jan–Mar 2027 cap or HMRC/VAT guidance changes electricity VAT treatment.
By: Switch Editorial Team, Switch Squid Ltd
As of 23 September 2026, the clean October decision rule is: if you are on a standard variable tariff (SVT / default tariff), Ofgem’s dual-fuel Direct Debit price cap rises to £1,723 a year from 1 October to 31 December 2026 (about 4% vs the Jul–Sep £1,663 level) — so compare live fixed deals now, but only fix if the quote beats your expected SVT bill after standing charges, regional rates, and exit fees. Primary Compare buttons use MoneySuperMarket’s Awin home-energy journey (campaign 911601 / soft mid 22713) — never SwitchSquid’s own /energy/ hub as the money button, and never business-energy CTAs.
I am Switch. Soft hub: home energy. An older twin lived on the wrong path at /energy-guides/fixed-vs-variable-winter-2026/; this is the proper /energy/guides/ October 2026 version.
Compare home energy deals (MSM Awin 911601) →
What the October 2026 cap actually says
Ofgem’s published averages for Direct Debit customers in England, Scotland and Wales for 1 October–31 December 2026:
- Typical dual-fuel Direct Debit cap: £1,723 a year (+4% vs Jul–Sep).
- Electricity: 26.32 p/kWh unit + 54.83 p/day standing charge — VAT 0% on electricity from 1 October 2026 to 31 March 2027.
- Gas: 7.97 p/kWh unit + 29.68 p/day standing charge — VAT stays 5%.
Medium Typical Domestic Consumption Values used with these headlines: about 2,500 kWh electricity and 9,500 kWh gas. Your bill will differ by region, payment method, meter type and actual usage. Prepayment and standard credit caps are different levels — do not assume the £1,723 DD figure is your number.
Fixed vs SVT — decision table
| Question | Stay on SVT (cap) | Fix now |
|---|---|---|
| Best when | Fixed quotes sit above your expected SVT bill; you may move house soon | Fixed dual-fuel quote clearly undercuts your projected Oct–Dec SVT + you accept exit fees |
| Price path | Resets every quarter with Ofgem | Locked unit/standing for the fixed term (read small print) |
| VAT note (Oct 2026) | Elec VAT 0% to 31 Mar 2027; gas 5% | Same VAT rules apply to fixed tariffs — still confirm the quote |
| Risk | Jan 2027 cap could rise again | Wholesale falls and you are stuck above market |
| Action | Re-compare each Ofgem announcement | Take a named fixed via MSM if the maths wins |
Compare fixed vs SVT quotes on MSM →
How to run the maths without inventing a tariff
1) Pull your last 12 months of kWh (or annualise the last bill). 2) Apply Ofgem’s published average unit/standing only as a national sketch — then replace with your region’s rates from Ofgem’s area tables or your supplier letter. 3) Get at least three fixed dual-fuel quotes on MSM for the same usage. 4) Add exit fees if you are leaving a fixed early. 5) Fix only if the all-in Year-1 cash wins after standing charges.
We do not invent a “best fixed at X p/kWh” national winner. Quote-led markets punish blog fiction.
Electricity VAT 0% — what changes on the bill
From 1 October 2026 to 31 March 2027, domestic electricity is charged with 0% VAT under the published Ofgem framing for the cap tables. Gas keeps 5% VAT. That tilts dual-fuel bill composition slightly toward gas standing/unit visibility. It does not mean your whole dual-fuel bill is VAT-free. Read the VAT line on the bill PDF.
Prepayment customers and Economy 7 meters use different cap schedules — see Ofgem’s payment-method tables before you reuse the £1,723 DD headline.
Switching in the October window
Switches usually take about five working days once the new supplier accepts you. Cool-off periods still apply on many deals. Do not stop Direct Debit with the old supplier until the new one confirms the start date. Keep a photo of the last meter read on switch day.
If you are already on a cheap fixed that ends after winter, running the October SVT window on a temporary default tariff can be fine — just diary the end date so you do not roll forever.
FAQ
What is the Ofgem price cap from October 2026?
£1,723 a year for a typical dual-fuel Direct Debit household for 1 Oct–31 Dec 2026 — about 4% higher than Jul–Sep. Source: ofgem.gov.uk.
Should I fix or stay on SVT in October 2026?
Fix if a live quote undercuts your expected SVT bill after standing charges and exit fees. Otherwise stay on SVT and re-compare when the next quarterly cap lands.
What are the October unit rates?
Ofgem averages for DD: electricity 26.32 p/kWh + 54.83 p/day standing; gas 7.97 p/kWh + 29.68 p/day standing. Regional rates differ.
Is electricity really VAT-free?
Ofgem’s Oct–Dec 2026 tables present electricity with 0% VAT from 1 Oct 2026 to 31 Mar 2027; gas remains 5%. Confirm on your bill.
Why is the Compare button MoneySuperMarket?
Home energy CTAs must be MSM Awin (aff 911601). We never send residential switchers to the business-energy form.
Does this apply to business energy?
No. Business sites use non-domestic contracts. See our business-energy guides and the business energy form.
Compare home energy on MSM (Awin) →
Worked profiles (shapes, not invented fixed rates)
Average dual-fuel Direct Debit home near TDCV: treat £1,723 as the SVT sketch for Oct–Dec, then ask MSM whether any fixed lands clearly under that after your real kWh. A £40 “saving” that ignores a £75 exit fee is not a saving.
High gas, low electricity home: gas VAT at 5% and the higher Oct gas unit rate matter more. Do not obsess over the electricity VAT holiday.
Flat with tiny usage: standing charges dominate. A flashy unit rate on a fixed can still lose if standing is high — compare standing first.
Internal links
Near-tier: Economy 7 vs Octopus Go. Soft hub: energy. Business stays separate: Pozitive Energy business.
Compare October fixed vs SVT on MSM →
Sources: Ofgem Oct–Dec 2026 cap news; Ofgem unit rates and standing charges — opened 23 Sep 2026.
Honest limits
National averages are not your bill. Direct Debit ≠ prepayment ≠ Economy 7. Affiliate disclosure: SwitchSquid earns commission when you use the MSM Awin 911601 journey. Soft /energy/ hub links never replace the Compare button.
Why October is the switch season
Households search when the quarterly cap moves and heating demand rises. That is exactly when thin “save £X” blogs invent rates. Our rule: cite Ofgem numbers only, send cash decisions through MSM, and keep business energy on its own track.
Standing charges are half the story
October’s electricity standing charge average falls slightly versus Jul–Sep on Ofgem’s published DD table while the unit rate edges up; gas standing and unit both rise. Low-usage flats feel standing charges more than unit rates. High-usage family homes feel unit rates more. Always split the bill into standing vs unit before you crown a fixed winner from a single “£/year” tile.
Regional distribution costs mean a London DD rate is not a Highlands DD rate. Use Ofgem’s area tables or the rates on your bill when you model — national averages are sketches for journalism, not invoices.
Exit fees, cool-off and broker hygiene
Fixed tariffs often carry exit fees that taper. A switch in month two can erase the headline saving. Cool-off windows still let many customers cancel quickly after signing — use them if a better quote lands three days later. Avoid giving the same lead to five outbound brokers in one evening; your phone will not survive it.
MoneySuperMarket’s Awin journey is the residential money path we destination-verified. Soft mentions of mid 22713 / aff 911601 are fine. Do not paste Nest energy SKUs — we do not sell domestic kWh as Nest products on this CTA.
Smart meters, half-hourly and time-of-use
If you already have a working smart meter, time-of-use tariffs (Go, Cosy, Agile-style products) can beat both flat SVT and a naive fixed — but only with a usage shape that fits. See our Economy 7 vs Octopus Go guide for the overnight-shift logic. October’s cap decision and a TOU decision are related but not identical: you can fix gas and keep electricity smart, or vice versa, depending on quotes.
Dumb meters can still switch. You do not need a smart meter to leave an SVT for a fixed dual-fuel deal. You do need one for many half-hourly products.
Vulnerable customers and warm home support
If you are on the Priority Services Register, tell both suppliers when you switch. Prepayment customers should read Ofgem’s PPM cap table rather than the £1,723 DD headline. Debt repayment plans can travel with you — ask both suppliers how repayments continue so you do not get unexpected recovery letters.
Government support schemes change; verify current Warm Home Discount / rebate eligibility on GOV.UK rather than a blog memory from last winter.
Dual-fuel vs single-fuel fixes
Some households only need to fix gas while electricity rides a smart TOU tariff — or the reverse. Dual-fuel discounts are not automatic wins. Price electricity-only and gas-only fixed quotes as well as dual-fuel bundles on MSM, then pick the lower all-in cash. Standing charges on two single-fuel contracts can exceed one dual-fuel standing stack — check both.
