HM Treasury Green Book

This is the central point for access to guidance on the economic assessment of spending and investment and to related guidance including the preparation of business cases for the public sector.

The Green Book methodology should be used to make an economic assessment of the social costs and benefits of all new policies projects and programmes including the economic assessment of regulations under regulatory impact analysis. As recommended by the Green Book all spending proposals should be accompanied by a proportionate and well structured business case. Guidance on preparing and assessing Business cases is given on the Business case resources page.