Fixed Tariff v12

Tariff details for British Gas, including contract notes, price ranges and the supporting metadata we currently hold.

Direct debit supported Cash supported
End date
31 January 2026
Contract length
13 months
Electricity code
X6X
Gas code
Y6X

Tariff overview

Fixed Tariff v12 was a 13 fixed tariff released on 19 December 2025, with an expected end date around 31 January 2026. This tariff is no longer current, but it may still be useful if you are checking an older bill, reviewing a previous deal, or trying to understand what tariff you were on before moving elsewhere.

Check my bill

Contract snapshot

Contract length
13 months
Exit fee
£Not listed
Smart meter
Not required or not listed
Cash payments
Supported

Price ranges by region

These summaries show the range of rates we currently hold across regions, rather than one national figure.

Electricity

Regions listed: 13

Direct debit standing charge: 37.43p to 66.51p

Direct debit unit rate: 22.33p to 24.75p

Cash standing charge: 41.85p to 72.84p

Cash unit rate: 23.51p to 26.05p

Gas

Regions listed: 13

Direct debit standing charge: 27.65p to 28.31p

Direct debit unit rate: 5.88p to 6.29p

Cash standing charge: 32.41p to 32.43p

Cash unit rate: 6.19p to 6.62p

Multi-rate electricity

Regions listed: 13

Direct debit standing charge: 37.32p to 66.15p

Direct debit day rate: 27.76p to 31.22p

Direct debit night rate: 12.64p to 13.49p

Cash day rate: 29.01p to 32.66p

Cash night rate: 13.60p to 14.44p

Terms

Terms content has not been added yet.

Related tariffs

Direct debit supported Cash supported

Fixed Tariff v95

Ends 31 October 2026

View tariff page
Direct debit supported Cash supported

Fixed Tariff Oct26 v1

Ends 31 October 2026

View tariff page
Direct debit supported Cash supported

Fixed Tariff Oct26 v2

Ends 31 October 2026

View tariff page
Direct debit supported Cash supported

Fixed Tariff Oct26 v3

Ends 31 October 2026

View tariff page

Save with your current British Gas tariff in just 60 seconds

Enter your postcode to get started

We'll check your suppliers best deals

Don't just take our word for it

Join households across the UK who asked ismybillfair