Oil and Gas Decommissioning Relief Deeds

Dan Tomlinson Excerpts

Wednesday 22nd April 2026 Written Statements

[The Exchequer Secretary to the Treasury (Dan Tomlinson)]

The Government’s fiscal approach for oil and gas aims to balance supporting investment and growth with ensuring a fair return for the nation in exchange for the use of its resources.

At Budget 2013, the Government announced they would begin signing decommissioning relief deeds. These deeds represented a new contractual approach to provide oil and gas companies with certainty on the level of tax relief they will receive on future decommissioning costs.

Since October 2013, the Government have entered into 110 decommissioning relief deeds. Offshore Energies UK estimates that these deeds have so far unlocked approximately £13.5 billion of capital, which can now be invested elsewhere.

The Government committed to report to Parliament annually on progress with the decommissioning relief deeds. The report for financial year 2024-25 is provided below.

Number of decommissioning relief agreements entered into: the Government entered into one decommissioning relief agreement in 2024-25.

Total number of decommissioning relief agreements in force at the end of the 2024-25 financial year: 109 decommissioning relief agreements were in force at the end of the financial year. We have entered into one more agreement since the end of the 2024-25 financial year, but this is out of scope of the report.

Number of payments made under any decommissioning relief agreements during that year, and the amount of each payment: five payments were made under a decommissioning relief agreement in 2024-25, for £9.55 million in total. These were made in relation to the provisions recognised by HM Treasury from 2015 onwards as a result of companies defaulting on their decommissioning obligations.

Total number of payments that have been made under any decommissioning relief agreements as at the end of that year, and the total amount of those payments: 24 payments have been made under any decommissioning relief agreement as at the end of the 2024-25 financial year, totalling around £355 million.

Estimate of the maximum amount liable to be paid under any decommissioning relief agreements: the Government have not made any changes to the tax regime that would generate a liability to be paid under any decommissioning relief agreements. HM Treasury’s 2025-26 accounts will recognise a provision currently estimated to be £133 million in respect of decommissioning expenditure incurred as a result of companies defaulting on their decommissioning obligations ^[1]. The majority of this is currently expected to be realised over the next five years.

^[1] This figure which is an estimate at the last interim reporting period is unaudited and takes into account payments made subsequent to the financial year covered by this written ministerial statement. The estimate is under review and subject to audit ahead of the year end reporting period and may be updated to reflect newer information or changes required by accounting standards.

[HCWS1534]