Fixed Tariff 18M

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 June 2026
Contract length
18 months
Electricity code
XML
Gas code
YML

Tariff overview

Fixed Tariff 18M was a 18 fixed tariff released on 16 December 2025, with an expected end date around 30 June 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 This tariff is no longer current, but it may still be useful if you are checking an older bill, reviewing a previous deal, or trying to understand what tariff you were on before moving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.

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Contract snapshot

Contract length
18 months
Exit fee
£50
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: 30.50p to 56.20p

Direct debit unit rate: 20.38p to 23.81p

Cash standing charge: 34.89p to 62.10p

Cash unit rate: 21.58p to 25.09p

Gas

Regions listed: 14

Direct debit standing charge: 29.81p to 30.50p

Direct debit unit rate: 5.51p to 5.90p

Cash standing charge: 34.57p to 34.60p

Cash unit rate: 5.81p to 6.22p

Multi-rate electricity

Regions listed: 14

Direct debit standing charge: 30.42p to 56.20p

Direct debit day rate: 27.06p to 30.84p

Direct debit night rate: 11.61p to 13.96p

Cash day rate: 28.34p to 32.23p

Cash night rate: 12.54p to 14.90p

Terms

Terms content has not been added yet.

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