Fixed Tariff Sep27 v1

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

Direct debit supported Cash supported
End date
30 September 2027
Contract length
18 months
Electricity code
XN3
Gas code
YN3

Tariff overview

Fixed Tariff Sep27 v1 is a 18 month fixed tariff released on 3 March 2026. It is due to end around 30 September 2027. This tariff is not currently available for new switches. This type of tariff is usually aimed at customers who want price certainty for a set period, so the main things to review are the tariff end date, any exit fees, and what happens when the fixed term finishes.

Key points

  • British Gas's Cheapest Deal
Check my bill

Contract snapshot

Contract length
18 months
Exit fee
£100
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: 14

Direct debit standing charge: 43.46p to 67.57p

Direct debit unit rate: 25.41p to 27.70p

Cash standing charge: 51.31p to 75.82p

Cash unit rate: 26.82p to 29.23p

Gas

Regions listed: 14

Direct debit standing charge: 32.84p to 33.86p

Direct debit unit rate: 5.51p to 5.85p

Cash standing charge: 40.79p to 40.81p

Cash unit rate: 5.80p to 6.16p

Multi-rate electricity

Regions listed: 14

Direct debit standing charge: 43.48p to 66.80p

Direct debit day rate: 31.17p to 34.23p

Direct debit night rate: 14.21p to 15.58p

Cash day rate: 32.67p to 35.91p

Cash night rate: 15.26p to 16.69p

Terms

energy-terms/ZT5N5mbDf2JWua4adHDKR5ShYGN9PQj2J8IEchEY.pdf

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