One of the Nordic Council of Ministers' long-term goals is to support the Nordic countries to mainstream a gender equality perspective into the national budget and budgetary process. A further aim is to ensure that this perspective is given prominence in change work in the Nordic welfare states. One such area of work is referred to internationally as gender budgeting. This is the final report of a joint three-year project between Denmark, Finland, Iceland, Norway and Sweden. The finance ministries and ministries responsible for gender equality affairs have engaged in development work, exchanged ideas and experience concerning the work of mainstreaming a gender equality perspective into the national budget and budgetary process in each country. The aim of the report is to present the knowledge and experience that the project has helped generate and to provide recommendations on how gender budgeting in central government administrations may be successfully accomplished.