Gas safety renewal date calculator

Enter the date of the last CP12 check. The calculator applies the Gas Safety (Installation and Use) Regulations 1998, including the two-month early-renewal rule, and gives you the four dates that matter. Nothing you type leaves your browser.

The date on the new Landlord Gas Safety Record.

Needed only to apply the two-month early-renewal rule.

Enter the check date to see the deadlines.

Managing more than a few properties? Add this property to Proplio and the reminders take care of themselves.

The rules behind the dates

Twelve months, no grace period
A landlord must have every gas appliance and flue they provide checked by a Gas Safe registered engineer within 12 months of installation and at intervals of no more than 12 months thereafter. The deadline is the date, not the month.
Reg. 36(3)(a)–(b)
The two-month early-renewal rule
A check completed within the two months ending with the deadline date is treated as having been made on the deadline date. Renewing early in that window therefore does not shorten the next twelve months. Checks done earlier than two months out, or after the deadline, start a fresh twelve months from the day of the check.
Reg. 36A(1), inserted 6 April 2018 by SI 2018/139
Copies for tenants
Existing tenants must receive a copy of the record within 28 days of the check. Anyone moving in must be given a copy before they occupy the property.
Reg. 36(6)
Keep the record until two further checks
The landlord must keep the record of each check until there have been two further checks of that appliance or flue — or, if the appliance or flue is removed, for two years from the date of the check.
Reg. 36(3)(c)

Sources

Applies to England, Scotland and Wales. General information, not legal advice; check the record itself and the engineer's advice for the property in front of you. Related reading: what happens when a gas safety certificate expires.