Fixed Tariff 18M

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

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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 is a 18 month fixed tariff released on 16 December 2025. It is due to end around 30 June 2026. 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.

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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: 32.03p to 59.01p

Direct debit unit rate: 21.40p to 25.00p

Cash standing charge: 36.64p to 65.21p

Cash unit rate: 22.66p to 26.34p

Gas

Regions listed: 14

Direct debit standing charge: 31.30p to 32.03p

Direct debit unit rate: 5.79p to 6.19p

Cash standing charge: 36.30p to 36.33p

Cash unit rate: 6.11p to 6.53p

Multi-rate electricity

Regions listed: 14

Direct debit standing charge: 31.94p to 59.01p

Direct debit day rate: 28.41p to 32.38p

Direct debit night rate: 12.19p to 14.66p

Cash day rate: 29.76p to 33.85p

Cash night rate: 13.17p to 15.64p

Terms

Terms content has not been added yet.

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