Free tool
Gas certificate (CP12) expiry checker
Enter your last gas safety check and get your expiry date - plus the earliest date you can renew without losing a single day, using the 2-month rule most landlords don't know exists.
Kept · ToolT-2 · CP12 dates
The 2-month rule: renew in the final two months of a certificate's life and the new one keeps the old expiry date - like an MOT. Renew earlier than that and the clock resets from the new check. Tenants must receive a copy within 28 days of any check. Guidance, not legal advice.
Never work this out again.
Kept tracks the expiry, the 2-month window and the tenant-copy duty - and books the reminders for you.
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