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Britain eases infrastructure approval rules to boost investment

September 4, 2026 6:15 PM EDT

Oct 10, 2025; London, United Kingdom; An Underground sign at the Kings Cross-St. Pancras station. Mandatory Credit: Kirby Lee-Imagn Images

Sept 4 (Reuters) - Britain's Treasury ‌said on ​Friday ​that it would lower a key rate used to evaluate the long-term benefits of investment in public infrastructure ‌projects as part of plans to boost investment across ⁠the country.

• The discount rate used for appraising public spending will be cut ‌to 3% from 3.5%, ‌the Treasury said in a statement detailing reforms to its "Green Book" - its manual that dictates the approval of capital projects.

• Discounting ​is how the Treasury compares costs and benefits that arrive at different points in time - treating £100 today as worth ⁠more than the promise of £100 in future.

• Lowering the discount rate reduces that gap, making ​it easier for long-term projects to show their full value instead of being discounted simply because their ​benefits take years to arrive.

• The ‌government will publish full details of the plan, including its response to a review of the discount ⁠rate, at the budget on October 28. Finance minister John Healey plans to give his first major speech in his new role on ⁠Monday, where he is expected to set out details of the plan.

• The ​changes are intended to give transport, housing and social infrastructure projects a "fairer hearing" in government spending decisions by placing greater weight on benefits that ‌take years to materialise, the Treasury said.

• The Treasury is also testing a new approach that assesses ‌the economic potential of entire areas for investment decisions, rather than ⁠judging individual projects one ‌by one. The approach ​is being piloted in Plymouth, Liverpool, Birmingham and Port Talbot.

(Reporting by Preetika Parashuraman in Bengaluru, Editing by ‌Franklin Paul)



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